(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
    typeof define === 'function' && define.amd ? define(['exports'], factory) :
    (global = global || self, factory(global.FullCalendar = {}));
}(this, function (exports) { 'use strict';

    // Creating
    // ----------------------------------------------------------------------------------------------------------------
    var elementPropHash = {
        className: true,
        colSpan: true,
        rowSpan: true
    };
    var containerTagHash = {
        '<tr': 'tbody',
        '<td': 'tr'
    };
    function createElement(tagName, attrs, content) {
        var el = document.createElement(tagName);
        if (attrs) {
            for (var attrName in attrs) {
                if (attrName === 'style') {
                    applyStyle(el, attrs[attrName]);
                }
                else if (elementPropHash[attrName]) {
                    el[attrName] = attrs[attrName];
                }
                else {
                    el.setAttribute(attrName, attrs[attrName]);
                }
            }
        }
        if (typeof content === 'string') {
            el.innerHTML = content; // shortcut. no need to process HTML in any way
        }
        else if (content != null) {
            appendToElement(el, content);
        }
        return el;
    }
    function htmlToElement(html) {
        html = html.trim();
        var container = document.createElement(computeContainerTag(html));
        container.innerHTML = html;
        return container.firstChild;
    }
    function htmlToElements(html) {
        return Array.prototype.slice.call(htmlToNodeList(html));
    }
    function htmlToNodeList(html) {
        html = html.trim();
        var container = document.createElement(computeContainerTag(html));
        container.innerHTML = html;
        return container.childNodes;
    }
    // assumes html already trimmed and tag names are lowercase
    function computeContainerTag(html) {
        return containerTagHash[html.substr(0, 3) // faster than using regex
        ] || 'div';
    }
    function appendToElement(el, content) {
        var childNodes = normalizeContent(content);
        for (var i = 0; i < childNodes.length; i++) {
            el.appendChild(childNodes[i]);
        }
    }
    function prependToElement(parent, content) {
        var newEls = normalizeContent(content);
        var afterEl = parent.firstChild || null; // if no firstChild, will append to end, but that's okay, b/c there were no children
        for (var i = 0; i < newEls.length; i++) {
            parent.insertBefore(newEls[i], afterEl);
        }
    }
    function insertAfterElement(refEl, content) {
        var newEls = normalizeContent(content);
        var afterEl = refEl.nextSibling || null;
        for (var i = 0; i < newEls.length; i++) {
            refEl.parentNode.insertBefore(newEls[i], afterEl);
        }
    }
    function normalizeContent(content) {
        var els;
        if (typeof content === 'string') {
            els = htmlToElements(content);
        }
        else if (content instanceof Node) {
            els = [content];
        }
        else { // Node[] or NodeList
            els = Array.prototype.slice.call(content);
        }
        return els;
    }
    function removeElement(el) {
        if (el.parentNode) {
            el.parentNode.removeChild(el);
        }
    }
    // Querying
    // ----------------------------------------------------------------------------------------------------------------
    // from https://developer.mozilla.org/en-US/docs/Web/API/Element/closest
    var matchesMethod = Element.prototype.matches ||
        Element.prototype.matchesSelector ||
        Element.prototype.msMatchesSelector;
    var closestMethod = Element.prototype.closest || function (selector) {
        // polyfill
        var el = this;
        if (!document.documentElement.contains(el)) {
            return null;
        }
        do {
            if (elementMatches(el, selector)) {
                return el;
            }
            el = el.parentElement || el.parentNode;
        } while (el !== null && el.nodeType === 1);
        return null;
    };
    function elementClosest(el, selector) {
        return closestMethod.call(el, selector);
    }
    function elementMatches(el, selector) {
        return matchesMethod.call(el, selector);
    }
    // accepts multiple subject els
    // returns a real array. good for methods like forEach
    function findElements(container, selector) {
        var containers = container instanceof HTMLElement ? [container] : container;
        var allMatches = [];
        for (var i = 0; i < containers.length; i++) {
            var matches = containers[i].querySelectorAll(selector);
            for (var j = 0; j < matches.length; j++) {
                allMatches.push(matches[j]);
            }
        }
        return allMatches;
    }
    // accepts multiple subject els
    // only queries direct child elements
    function findChildren(parent, selector) {
        var parents = parent instanceof HTMLElement ? [parent] : parent;
        var allMatches = [];
        for (var i = 0; i < parents.length; i++) {
            var childNodes = parents[i].children; // only ever elements
            for (var j = 0; j < childNodes.length; j++) {
                var childNode = childNodes[j];
                if (!selector || elementMatches(childNode, selector)) {
                    allMatches.push(childNode);
                }
            }
        }
        return allMatches;
    }
    // Attributes
    // ----------------------------------------------------------------------------------------------------------------
    function forceClassName(el, className, bool) {
        if (bool) {
            el.classList.add(className);
        }
        else {
            el.classList.remove(className);
        }
    }
    // Style
    // ----------------------------------------------------------------------------------------------------------------
    var PIXEL_PROP_RE = /(top|left|right|bottom|width|height)$/i;
    function applyStyle(el, props) {
        for (var propName in props) {
            applyStyleProp(el, propName, props[propName]);
        }
    }
    function applyStyleProp(el, name, val) {
        if (val == null) {
            el.style[name] = '';
        }
        else if (typeof val === 'number' && PIXEL_PROP_RE.test(name)) {
            el.style[name] = val + 'px';
        }
        else {
            el.style[name] = val;
        }
    }

    function pointInsideRect(point, rect) {
        return point.left >= rect.left &&
            point.left < rect.right &&
            point.top >= rect.top &&
            point.top < rect.bottom;
    }
    // Returns a new rectangle that is the intersection of the two rectangles. If they don't intersect, returns false
    function intersectRects(rect1, rect2) {
        var res = {
            left: Math.max(rect1.left, rect2.left),
            right: Math.min(rect1.right, rect2.right),
            top: Math.max(rect1.top, rect2.top),
            bottom: Math.min(rect1.bottom, rect2.bottom)
        };
        if (res.left < res.right && res.top < res.bottom) {
            return res;
        }
        return false;
    }
    function translateRect(rect, deltaX, deltaY) {
        return {
            left: rect.left + deltaX,
            right: rect.right + deltaX,
            top: rect.top + deltaY,
            bottom: rect.bottom + deltaY
        };
    }
    // Returns a new point that will have been moved to reside within the given rectangle
    function constrainPoint(point, rect) {
        return {
            left: Math.min(Math.max(point.left, rect.left), rect.right),
            top: Math.min(Math.max(point.top, rect.top), rect.bottom)
        };
    }
    // Returns a point that is the center of the given rectangle
    function getRectCenter(rect) {
        return {
            left: (rect.left + rect.right) / 2,
            top: (rect.top + rect.bottom) / 2
        };
    }
    // Subtracts point2's coordinates from point1's coordinates, returning a delta
    function diffPoints(point1, point2) {
        return {
            left: point1.left - point2.left,
            top: point1.top - point2.top
        };
    }

    // Logic for determining if, when the element is right-to-left, the scrollbar appears on the left side
    var isRtlScrollbarOnLeft = null;
    function getIsRtlScrollbarOnLeft() {
        if (isRtlScrollbarOnLeft === null) {
            isRtlScrollbarOnLeft = computeIsRtlScrollbarOnLeft();
        }
        return isRtlScrollbarOnLeft;
    }
    function computeIsRtlScrollbarOnLeft() {
        var outerEl = createElement('div', {
            style: {
                position: 'absolute',
                top: -1000,
                left: 0,
                border: 0,
                padding: 0,
                overflow: 'scroll',
                direction: 'rtl'
            }
        }, '<div></div>');
        document.body.appendChild(outerEl);
        var innerEl = outerEl.firstChild;
        var res = innerEl.getBoundingClientRect().left > outerEl.getBoundingClientRect().left;
        removeElement(outerEl);
        return res;
    }
    // The scrollbar width computations in computeEdges are sometimes flawed when it comes to
    // retina displays, rounding, and IE11. Massage them into a usable value.
    function sanitizeScrollbarWidth(width) {
        width = Math.max(0, width); // no negatives
        width = Math.round(width);
        return width;
    }

    function computeEdges(el, getPadding) {
        if (getPadding === void 0) { getPadding = false; }
        var computedStyle = window.getComputedStyle(el);
        var borderLeft = parseInt(computedStyle.borderLeftWidth, 10) || 0;
        var borderRight = parseInt(computedStyle.borderRightWidth, 10) || 0;
        var borderTop = parseInt(computedStyle.borderTopWidth, 10) || 0;
        var borderBottom = parseInt(computedStyle.borderBottomWidth, 10) || 0;
        // must use offset(Width|Height) because compatible with client(Width|Height)
        var scrollbarLeftRight = sanitizeScrollbarWidth(el.offsetWidth - el.clientWidth - borderLeft - borderRight);
        var scrollbarBottom = sanitizeScrollbarWidth(el.offsetHeight - el.clientHeight - borderTop - borderBottom);
        var res = {
            borderLeft: borderLeft,
            borderRight: borderRight,
            borderTop: borderTop,
            borderBottom: borderBottom,
            scrollbarBottom: scrollbarBottom,
            scrollbarLeft: 0,
            scrollbarRight: 0
        };
        if (getIsRtlScrollbarOnLeft() && computedStyle.direction === 'rtl') { // is the scrollbar on the left side?
            res.scrollbarLeft = scrollbarLeftRight;
        }
        else {
            res.scrollbarRight = scrollbarLeftRight;
        }
        if (getPadding) {
            res.paddingLeft = parseInt(computedStyle.paddingLeft, 10) || 0;
            res.paddingRight = parseInt(computedStyle.paddingRight, 10) || 0;
            res.paddingTop = parseInt(computedStyle.paddingTop, 10) || 0;
            res.paddingBottom = parseInt(computedStyle.paddingBottom, 10) || 0;
        }
        return res;
    }
    function computeInnerRect(el, goWithinPadding) {
        if (goWithinPadding === void 0) { goWithinPadding = false; }
        var outerRect = computeRect(el);
        var edges = computeEdges(el, goWithinPadding);
        var res = {
            left: outerRect.left + edges.borderLeft + edges.scrollbarLeft,
            right: outerRect.right - edges.borderRight - edges.scrollbarRight,
            top: outerRect.top + edges.borderTop,
            bottom: outerRect.bottom - edges.borderBottom - edges.scrollbarBottom
        };
        if (goWithinPadding) {
            res.left += edges.paddingLeft;
            res.right -= edges.paddingRight;
            res.top += edges.paddingTop;
            res.bottom -= edges.paddingBottom;
        }
        return res;
    }
    function computeRect(el) {
        var rect = el.getBoundingClientRect();
        return {
            left: rect.left + window.pageXOffset,
            top: rect.top + window.pageYOffset,
            right: rect.right + window.pageXOffset,
            bottom: rect.bottom + window.pageYOffset
        };
    }
    function computeViewportRect() {
        return {
            left: window.pageXOffset,
            right: window.pageXOffset + document.documentElement.clientWidth,
            top: window.pageYOffset,
            bottom: window.pageYOffset + document.documentElement.clientHeight
        };
    }
    function computeHeightAndMargins(el) {
        return el.getBoundingClientRect().height + computeVMargins(el);
    }
    function computeVMargins(el) {
        var computed = window.getComputedStyle(el);
        return parseInt(computed.marginTop, 10) +
            parseInt(computed.marginBottom, 10);
    }
    // does not return window
    function getClippingParents(el) {
        var parents = [];
        while (el instanceof HTMLElement) { // will stop when gets to document or null
            var computedStyle = window.getComputedStyle(el);
            if (computedStyle.position === 'fixed') {
                break;
            }
            if ((/(auto|scroll)/).test(computedStyle.overflow + computedStyle.overflowY + computedStyle.overflowX)) {
                parents.push(el);
            }
            el = el.parentNode;
        }
        return parents;
    }
    function computeClippingRect(el) {
        return getClippingParents(el)
            .map(function (el) {
            return computeInnerRect(el);
        })
            .concat(computeViewportRect())
            .reduce(function (rect0, rect1) {
            return intersectRects(rect0, rect1) || rect1; // should always intersect
        });
    }

    // Stops a mouse/touch event from doing it's native browser action
    function preventDefault(ev) {
        ev.preventDefault();
    }
    // Event Delegation
    // ----------------------------------------------------------------------------------------------------------------
    function listenBySelector(container, eventType, selector, handler) {
        function realHandler(ev) {
            var matchedChild = elementClosest(ev.target, selector);
            if (matchedChild) {
                handler.call(matchedChild, ev, matchedChild);
            }
        }
        container.addEventListener(eventType, realHandler);
        return function () {
            container.removeEventListener(eventType, realHandler);
        };
    }
    function listenToHoverBySelector(container, selector, onMouseEnter, onMouseLeave) {
        var currentMatchedChild;
        return listenBySelector(container, 'mouseover', selector, function (ev, matchedChild) {
            if (matchedChild !== currentMatchedChild) {
                currentMatchedChild = matchedChild;
                onMouseEnter(ev, matchedChild);
                var realOnMouseLeave_1 = function (ev) {
                    currentMatchedChild = null;
                    onMouseLeave(ev, matchedChild);
                    matchedChild.removeEventListener('mouseleave', realOnMouseLeave_1);
                };
                // listen to the next mouseleave, and then unattach
                matchedChild.addEventListener('mouseleave', realOnMouseLeave_1);
            }
        });
    }
    // Animation
    // ----------------------------------------------------------------------------------------------------------------
    var transitionEventNames = [
        'webkitTransitionEnd',
        'otransitionend',
        'oTransitionEnd',
        'msTransitionEnd',
        'transitionend'
    ];
    // triggered only when the next single subsequent transition finishes
    function whenTransitionDone(el, callback) {
        var realCallback = function (ev) {
            callback(ev);
            transitionEventNames.forEach(function (eventName) {
                el.removeEventListener(eventName, realCallback);
            });
        };
        transitionEventNames.forEach(function (eventName) {
            el.addEventListener(eventName, realCallback); // cross-browser way to determine when the transition finishes
        });
    }

    var DAY_IDS = ['sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'];
    // Adding
    function addWeeks(m, n) {
        var a = dateToUtcArray(m);
        a[2] += n * 7;
        return arrayToUtcDate(a);
    }
    function addDays(m, n) {
        var a = dateToUtcArray(m);
        a[2] += n;
        return arrayToUtcDate(a);
    }
    function addMs(m, n) {
        var a = dateToUtcArray(m);
        a[6] += n;
        return arrayToUtcDate(a);
    }
    // Diffing (all return floats)
    function diffWeeks(m0, m1) {
        return diffDays(m0, m1) / 7;
    }
    function diffDays(m0, m1) {
        return (m1.valueOf() - m0.valueOf()) / (1000 * 60 * 60 * 24);
    }
    function diffHours(m0, m1) {
        return (m1.valueOf() - m0.valueOf()) / (1000 * 60 * 60);
    }
    function diffMinutes(m0, m1) {
        return (m1.valueOf() - m0.valueOf()) / (1000 * 60);
    }
    function diffSeconds(m0, m1) {
        return (m1.valueOf() - m0.valueOf()) / 1000;
    }
    function diffDayAndTime(m0, m1) {
        var m0day = startOfDay(m0);
        var m1day = startOfDay(m1);
        return {
            years: 0,
            months: 0,
            days: Math.round(diffDays(m0day, m1day)),
            milliseconds: (m1.valueOf() - m1day.valueOf()) - (m0.valueOf() - m0day.valueOf())
        };
    }
    // Diffing Whole Units
    function diffWholeWeeks(m0, m1) {
        var d = diffWholeDays(m0, m1);
        if (d !== null && d % 7 === 0) {
            return d / 7;
        }
        return null;
    }
    function diffWholeDays(m0, m1) {
        if (timeAsMs(m0) === timeAsMs(m1)) {
            return Math.round(diffDays(m0, m1));
        }
        return null;
    }
    // Start-Of
    function startOfDay(m) {
        return arrayToUtcDate([
            m.getUTCFullYear(),
            m.getUTCMonth(),
            m.getUTCDate()
        ]);
    }
    function startOfHour(m) {
        return arrayToUtcDate([
            m.getUTCFullYear(),
            m.getUTCMonth(),
            m.getUTCDate(),
            m.getUTCHours()
        ]);
    }
    function startOfMinute(m) {
        return arrayToUtcDate([
            m.getUTCFullYear(),
            m.getUTCMonth(),
            m.getUTCDate(),
            m.getUTCHours(),
            m.getUTCMinutes()
        ]);
    }
    function startOfSecond(m) {
        return arrayToUtcDate([
            m.getUTCFullYear(),
            m.getUTCMonth(),
            m.getUTCDate(),
            m.getUTCHours(),
            m.getUTCMinutes(),
            m.getUTCSeconds()
        ]);
    }
    // Week Computation
    function weekOfYear(marker, dow, doy) {
        var y = marker.getUTCFullYear();
        var w = weekOfGivenYear(marker, y, dow, doy);
        if (w < 1) {
            return weekOfGivenYear(marker, y - 1, dow, doy);
        }
        var nextW = weekOfGivenYear(marker, y + 1, dow, doy);
        if (nextW >= 1) {
            return Math.min(w, nextW);
        }
        return w;
    }
    function weekOfGivenYear(marker, year, dow, doy) {
        var firstWeekStart = arrayToUtcDate([year, 0, 1 + firstWeekOffset(year, dow, doy)]);
        var dayStart = startOfDay(marker);
        var days = Math.round(diffDays(firstWeekStart, dayStart));
        return Math.floor(days / 7) + 1; // zero-indexed
    }
    // start-of-first-week - start-of-year
    function firstWeekOffset(year, dow, doy) {
        // first-week day -- which january is always in the first week (4 for iso, 1 for other)
        var fwd = 7 + dow - doy;
        // first-week day local weekday -- which local weekday is fwd
        var fwdlw = (7 + arrayToUtcDate([year, 0, fwd]).getUTCDay() - dow) % 7;
        return -fwdlw + fwd - 1;
    }
    // Array Conversion
    function dateToLocalArray(date) {
        return [
            date.getFullYear(),
            date.getMonth(),
            date.getDate(),
            date.getHours(),
            date.getMinutes(),
            date.getSeconds(),
            date.getMilliseconds()
        ];
    }
    function arrayToLocalDate(a) {
        return new Date(a[0], a[1] || 0, a[2] == null ? 1 : a[2], // day of month
        a[3] || 0, a[4] || 0, a[5] || 0);
    }
    function dateToUtcArray(date) {
        return [
            date.getUTCFullYear(),
            date.getUTCMonth(),
            date.getUTCDate(),
            date.getUTCHours(),
            date.getUTCMinutes(),
            date.getUTCSeconds(),
            date.getUTCMilliseconds()
        ];
    }
    function arrayToUtcDate(a) {
        // according to web standards (and Safari), a month index is required.
        // massage if only given a year.
        if (a.length === 1) {
            a = a.concat([0]);
        }
        return new Date(Date.UTC.apply(Date, a));
    }
    // Other Utils
    function isValidDate(m) {
        return !isNaN(m.valueOf());
    }
    function timeAsMs(m) {
        return m.getUTCHours() * 1000 * 60 * 60 +
            m.getUTCMinutes() * 1000 * 60 +
            m.getUTCSeconds() * 1000 +
            m.getUTCMilliseconds();
    }

    var INTERNAL_UNITS = ['years', 'months', 'days', 'milliseconds'];
    var PARSE_RE = /^(-?)(?:(\d+)\.)?(\d+):(\d\d)(?::(\d\d)(?:\.(\d\d\d))?)?/;
    // Parsing and Creation
    function createDuration(input, unit) {
        var _a;
        if (typeof input === 'string') {
            return parseString(input);
        }
        else if (typeof input === 'object' && input) { // non-null object
            return normalizeObject(input);
        }
        else if (typeof input === 'number') {
            return normalizeObject((_a = {}, _a[unit || 'milliseconds'] = input, _a));
        }
        else {
            return null;
        }
    }
    function parseString(s) {
        var m = PARSE_RE.exec(s);
        if (m) {
            var sign = m[1] ? -1 : 1;
            return {
                years: 0,
                months: 0,
                days: sign * (m[2] ? parseInt(m[2], 10) : 0),
                milliseconds: sign * ((m[3] ? parseInt(m[3], 10) : 0) * 60 * 60 * 1000 + // hours
                    (m[4] ? parseInt(m[4], 10) : 0) * 60 * 1000 + // minutes
                    (m[5] ? parseInt(m[5], 10) : 0) * 1000 + // seconds
                    (m[6] ? parseInt(m[6], 10) : 0) // ms
                )
            };
        }
        return null;
    }
    function normalizeObject(obj) {
        return {
            years: obj.years || obj.year || 0,
            months: obj.months || obj.month || 0,
            days: (obj.days || obj.day || 0) +
                getWeeksFromInput(obj) * 7,
            milliseconds: (obj.hours || obj.hour || 0) * 60 * 60 * 1000 + // hours
                (obj.minutes || obj.minute || 0) * 60 * 1000 + // minutes
                (obj.seconds || obj.second || 0) * 1000 + // seconds
                (obj.milliseconds || obj.millisecond || obj.ms || 0) // ms
        };
    }
    function getWeeksFromInput(obj) {
        return obj.weeks || obj.week || 0;
    }
    // Equality
    function durationsEqual(d0, d1) {
        return d0.years === d1.years &&
            d0.months === d1.months &&
            d0.days === d1.days &&
            d0.milliseconds === d1.milliseconds;
    }
    function isSingleDay(dur) {
        return dur.years === 0 && dur.months === 0 && dur.days === 1 && dur.milliseconds === 0;
    }
    // Simple Math
    function addDurations(d0, d1) {
        return {
            years: d0.years + d1.years,
            months: d0.months + d1.months,
            days: d0.days + d1.days,
            milliseconds: d0.milliseconds + d1.milliseconds
        };
    }
    function subtractDurations(d1, d0) {
        return {
            years: d1.years - d0.years,
            months: d1.months - d0.months,
            days: d1.days - d0.days,
            milliseconds: d1.milliseconds - d0.milliseconds
        };
    }
    function multiplyDuration(d, n) {
        return {
            years: d.years * n,
            months: d.months * n,
            days: d.days * n,
            milliseconds: d.milliseconds * n
        };
    }
    // Conversions
    // "Rough" because they are based on average-case Gregorian months/years
    function asRoughYears(dur) {
        return asRoughDays(dur) / 365;
    }
    function asRoughMonths(dur) {
        return asRoughDays(dur) / 30;
    }
    function asRoughDays(dur) {
        return asRoughMs(dur) / 864e5;
    }
    function asRoughMinutes(dur) {
        return asRoughMs(dur) / (1000 * 60);
    }
    function asRoughSeconds(dur) {
        return asRoughMs(dur) / 1000;
    }
    function asRoughMs(dur) {
        return dur.years * (365 * 864e5) +
            dur.months * (30 * 864e5) +
            dur.days * 864e5 +
            dur.milliseconds;
    }
    // Advanced Math
    function wholeDivideDurations(numerator, denominator) {
        var res = null;
        for (var i = 0; i < INTERNAL_UNITS.length; i++) {
            var unit = INTERNAL_UNITS[i];
            if (denominator[unit]) {
                var localRes = numerator[unit] / denominator[unit];
                if (!isInt(localRes) || (res !== null && res !== localRes)) {
                    return null;
                }
                res = localRes;
            }
            else if (numerator[unit]) {
                // needs to divide by something but can't!
                return null;
            }
        }
        return res;
    }
    function greatestDurationDenominator(dur, dontReturnWeeks) {
        var ms = dur.milliseconds;
        if (ms) {
            if (ms % 1000 !== 0) {
                return { unit: 'millisecond', value: ms };
            }
            if (ms % (1000 * 60) !== 0) {
                return { unit: 'second', value: ms / 1000 };
            }
            if (ms % (1000 * 60 * 60) !== 0) {
                return { unit: 'minute', value: ms / (1000 * 60) };
            }
            if (ms) {
                return { unit: 'hour', value: ms / (1000 * 60 * 60) };
            }
        }
        if (dur.days) {
            if (!dontReturnWeeks && dur.days % 7 === 0) {
                return { unit: 'week', value: dur.days / 7 };
            }
            return { unit: 'day', value: dur.days };
        }
        if (dur.months) {
            return { unit: 'month', value: dur.months };
        }
        if (dur.years) {
            return { unit: 'year', value: dur.years };
        }
        return { unit: 'millisecond', value: 0 };
    }

    /* FullCalendar-specific DOM Utilities
    ----------------------------------------------------------------------------------------------------------------------*/
    // Given the scrollbar widths of some other container, create borders/margins on rowEls in order to match the left
    // and right space that was offset by the scrollbars. A 1-pixel border first, then margin beyond that.
    function compensateScroll(rowEl, scrollbarWidths) {
        if (scrollbarWidths.left) {
            applyStyle(rowEl, {
                borderLeftWidth: 1,
                marginLeft: scrollbarWidths.left - 1
            });
        }
        if (scrollbarWidths.right) {
            applyStyle(rowEl, {
                borderRightWidth: 1,
                marginRight: scrollbarWidths.right - 1
            });
        }
    }
    // Undoes compensateScroll and restores all borders/margins
    function uncompensateScroll(rowEl) {
        applyStyle(rowEl, {
            marginLeft: '',
            marginRight: '',
            borderLeftWidth: '',
            borderRightWidth: ''
        });
    }
    // Make the mouse cursor express that an event is not allowed in the current area
    function disableCursor() {
        document.body.classList.add('fc-not-allowed');
    }
    // Returns the mouse cursor to its original look
    function enableCursor() {
        document.body.classList.remove('fc-not-allowed');
    }
    // Given a total available height to fill, have `els` (essentially child rows) expand to accomodate.
    // By default, all elements that are shorter than the recommended height are expanded uniformly, not considering
    // any other els that are already too tall. if `shouldRedistribute` is on, it considers these tall rows and
    // reduces the available height.
    function distributeHeight(els, availableHeight, shouldRedistribute) {
        // *FLOORING NOTE*: we floor in certain places because zoom can give inaccurate floating-point dimensions,
        // and it is better to be shorter than taller, to avoid creating unnecessary scrollbars.
        var minOffset1 = Math.floor(availableHeight / els.length); // for non-last element
        var minOffset2 = Math.floor(availableHeight - minOffset1 * (els.length - 1)); // for last element *FLOORING NOTE*
        var flexEls = []; // elements that are allowed to expand. array of DOM nodes
        var flexOffsets = []; // amount of vertical space it takes up
        var flexHeights = []; // actual css height
        var usedHeight = 0;
        undistributeHeight(els); // give all elements their natural height
        // find elements that are below the recommended height (expandable).
        // important to query for heights in a single first pass (to avoid reflow oscillation).
        els.forEach(function (el, i) {
            var minOffset = i === els.length - 1 ? minOffset2 : minOffset1;
            var naturalHeight = el.getBoundingClientRect().height;
            var naturalOffset = naturalHeight + computeVMargins(el);
            if (naturalOffset < minOffset) {
                flexEls.push(el);
                flexOffsets.push(naturalOffset);
                flexHeights.push(naturalHeight);
            }
            else {
                // this element stretches past recommended height (non-expandable). mark the space as occupied.
                usedHeight += naturalOffset;
            }
        });
        // readjust the recommended height to only consider the height available to non-maxed-out rows.
        if (shouldRedistribute) {
            availableHeight -= usedHeight;
            minOffset1 = Math.floor(availableHeight / flexEls.length);
            minOffset2 = Math.floor(availableHeight - minOffset1 * (flexEls.length - 1)); // *FLOORING NOTE*
        }
        // assign heights to all expandable elements
        flexEls.forEach(function (el, i) {
            var minOffset = i === flexEls.length - 1 ? minOffset2 : minOffset1;
            var naturalOffset = flexOffsets[i];
            var naturalHeight = flexHeights[i];
            var newHeight = minOffset - (naturalOffset - naturalHeight); // subtract the margin/padding
            if (naturalOffset < minOffset) { // we check this again because redistribution might have changed things
                el.style.height = newHeight + 'px';
            }
        });
    }
    // Undoes distrubuteHeight, restoring all els to their natural height
    function undistributeHeight(els) {
        els.forEach(function (el) {
            el.style.height = '';
        });
    }
    // Given `els`, a set of <td> cells, find the cell with the largest natural width and set the widths of all the
    // cells to be that width.
    // PREREQUISITE: if you want a cell to take up width, it needs to have a single inner element w/ display:inline
    function matchCellWidths(els) {
        var maxInnerWidth = 0;
        els.forEach(function (el) {
            var innerEl = el.firstChild; // hopefully an element
            if (innerEl instanceof HTMLElement) {
                var innerWidth_1 = innerEl.getBoundingClientRect().width;
                if (innerWidth_1 > maxInnerWidth) {
                    maxInnerWidth = innerWidth_1;
                }
            }
        });
        maxInnerWidth++; // sometimes not accurate of width the text needs to stay on one line. insurance
        els.forEach(function (el) {
            el.style.width = maxInnerWidth + 'px';
        });
        return maxInnerWidth;
    }
    // Given one element that resides inside another,
    // Subtracts the height of the inner element from the outer element.
    function subtractInnerElHeight(outerEl, innerEl) {
        // effin' IE8/9/10/11 sometimes returns 0 for dimensions. this weird hack was the only thing that worked
        var reflowStyleProps = {
            position: 'relative',
            left: -1 // ensure reflow in case the el was already relative. negative is less likely to cause new scroll
        };
        applyStyle(outerEl, reflowStyleProps);
        applyStyle(innerEl, reflowStyleProps);
        var diff = // grab the dimensions
         outerEl.getBoundingClientRect().height -
            innerEl.getBoundingClientRect().height;
        // undo hack
        var resetStyleProps = { position: '', left: '' };
        applyStyle(outerEl, resetStyleProps);
        applyStyle(innerEl, resetStyleProps);
        return diff;
    }
    /* Selection
    ----------------------------------------------------------------------------------------------------------------------*/
    function preventSelection(el) {
        el.classList.add('fc-unselectable');
        el.addEventListener('selectstart', preventDefault);
    }
    function allowSelection(el) {
        el.classList.remove('fc-unselectable');
        el.removeEventListener('selectstart', preventDefault);
    }
    /* Context Menu
    ----------------------------------------------------------------------------------------------------------------------*/
    function preventContextMenu(el) {
        el.addEventListener('contextmenu', preventDefault);
    }
    function allowContextMenu(el) {
        el.removeEventListener('contextmenu', preventDefault);
    }
    /* Object Ordering by Field
    ----------------------------------------------------------------------------------------------------------------------*/
    function parseFieldSpecs(input) {
        var specs = [];
        var tokens = [];
        var i;
        var token;
        if (typeof input === 'string') {
            tokens = input.split(/\s*,\s*/);
        }
        else if (typeof input === 'function') {
            tokens = [input];
        }
        else if (Array.isArray(input)) {
            tokens = input;
        }
        for (i = 0; i < tokens.length; i++) {
            token = tokens[i];
            if (typeof token === 'string') {
                specs.push(token.charAt(0) === '-' ?
                    { field: token.substring(1), order: -1 } :
                    { field: token, order: 1 });
            }
            else if (typeof token === 'function') {
                specs.push({ func: token });
            }
        }
        return specs;
    }
    function compareByFieldSpecs(obj0, obj1, fieldSpecs) {
        var i;
        var cmp;
        for (i = 0; i < fieldSpecs.length; i++) {
            cmp = compareByFieldSpec(obj0, obj1, fieldSpecs[i]);
            if (cmp) {
                return cmp;
            }
        }
        return 0;
    }
    function compareByFieldSpec(obj0, obj1, fieldSpec) {
        if (fieldSpec.func) {
            return fieldSpec.func(obj0, obj1);
        }
        return flexibleCompare(obj0[fieldSpec.field], obj1[fieldSpec.field])
            * (fieldSpec.order || 1);
    }
    function flexibleCompare(a, b) {
        if (!a && !b) {
            return 0;
        }
        if (b == null) {
            return -1;
        }
        if (a == null) {
            return 1;
        }
        if (typeof a === 'string' || typeof b === 'string') {
            return String(a).localeCompare(String(b));
        }
        return a - b;
    }
    /* String Utilities
    ----------------------------------------------------------------------------------------------------------------------*/
    function capitaliseFirstLetter(str) {
        return str.charAt(0).toUpperCase() + str.slice(1);
    }
    function padStart(val, len) {
        var s = String(val);
        return '000'.substr(0, len - s.length) + s;
    }
    /* Number Utilities
    ----------------------------------------------------------------------------------------------------------------------*/
    function compareNumbers(a, b) {
        return a - b;
    }
    function isInt(n) {
        return n % 1 === 0;
    }
    /* Weird Utilities
    ----------------------------------------------------------------------------------------------------------------------*/
    function applyAll(functions, thisObj, args) {
        if (typeof functions === 'function') { // supplied a single function
            functions = [functions];
        }
        if (functions) {
            var i = void 0;
            var ret = void 0;
            for (i = 0; i < functions.length; i++) {
                ret = functions[i].apply(thisObj, args) || ret;
            }
            return ret;
        }
    }
    function firstDefined() {
        var args = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            args[_i] = arguments[_i];
        }
        for (var i = 0; i < args.length; i++) {
            if (args[i] !== undefined) {
                return args[i];
            }
        }
    }
    // Returns a function, that, as long as it continues to be invoked, will not
    // be triggered. The function will be called after it stops being called for
    // N milliseconds. If `immediate` is passed, trigger the function on the
    // leading edge, instead of the trailing.
    // https://github.com/jashkenas/underscore/blob/1.6.0/underscore.js#L714
    function debounce(func, wait) {
        var timeout;
        var args;
        var context;
        var timestamp;
        var result;
        var later = function () {
            var last = new Date().valueOf() - timestamp;
            if (last < wait) {
                timeout = setTimeout(later, wait - last);
            }
            else {
                timeout = null;
                result = func.apply(context, args);
                context = args = null;
            }
        };
        return function () {
            context = this;
            args = arguments;
            timestamp = new Date().valueOf();
            if (!timeout) {
                timeout = setTimeout(later, wait);
            }
            return result;
        };
    }
    // Number and Boolean are only types that defaults or not computed for
    // TODO: write more comments
    function refineProps(rawProps, processors, defaults, leftoverProps) {
        if (defaults === void 0) { defaults = {}; }
        var refined = {};
        for (var key in processors) {
            var processor = processors[key];
            if (rawProps[key] !== undefined) {
                // found
                if (processor === Function) {
                    refined[key] = typeof rawProps[key] === 'function' ? rawProps[key] : null;
                }
                else if (processor) { // a refining function?
                    refined[key] = processor(rawProps[key]);
                }
                else {
                    refined[key] = rawProps[key];
                }
            }
            else if (defaults[key] !== undefined) {
                // there's an explicit default
                refined[key] = defaults[key];
            }
            else {
                // must compute a default
                if (processor === String) {
                    refined[key] = ''; // empty string is default for String
                }
                else if (!processor || processor === Number || processor === Boolean || processor === Function) {
                    refined[key] = null; // assign null for other non-custom processor funcs
                }
                else {
                    refined[key] = processor(null); // run the custom processor func
                }
            }
        }
        if (leftoverProps) {
            for (var key in rawProps) {
                if (processors[key] === undefined) {
                    leftoverProps[key] = rawProps[key];
                }
            }
        }
        return refined;
    }
    /* Date stuff that doesn't belong in datelib core
    ----------------------------------------------------------------------------------------------------------------------*/
    // given a timed range, computes an all-day range that has the same exact duration,
    // but whose start time is aligned with the start of the day.
    function computeAlignedDayRange(timedRange) {
        var dayCnt = Math.floor(diffDays(timedRange.start, timedRange.end)) || 1;
        var start = startOfDay(timedRange.start);
        var end = addDays(start, dayCnt);
        return { start: start, end: end };
    }
    // given a timed range, computes an all-day range based on how for the end date bleeds into the next day
    // TODO: give nextDayThreshold a default arg
    function computeVisibleDayRange(timedRange, nextDayThreshold) {
        if (nextDayThreshold === void 0) { nextDayThreshold = createDuration(0); }
        var startDay = null;
        var endDay = null;
        if (timedRange.end) {
            endDay = startOfDay(timedRange.end);
            var endTimeMS = timedRange.end.valueOf() - endDay.valueOf(); // # of milliseconds into `endDay`
            // If the end time is actually inclusively part of the next day and is equal to or
            // beyond the next day threshold, adjust the end to be the exclusive end of `endDay`.
            // Otherwise, leaving it as inclusive will cause it to exclude `endDay`.
            if (endTimeMS && endTimeMS >= asRoughMs(nextDayThreshold)) {
                endDay = addDays(endDay, 1);
            }
        }
        if (timedRange.start) {
            startDay = startOfDay(timedRange.start); // the beginning of the day the range starts
            // If end is within `startDay` but not past nextDayThreshold, assign the default duration of one day.
            if (endDay && endDay <= startDay) {
                endDay = addDays(startDay, 1);
            }
        }
        return { start: startDay, end: endDay };
    }
    // spans from one day into another?
    function isMultiDayRange(range) {
        var visibleRange = computeVisibleDayRange(range);
        return diffDays(visibleRange.start, visibleRange.end) > 1;
    }
    function diffDates(date0, date1, dateEnv, largeUnit) {
        if (largeUnit === 'year') {
            return createDuration(dateEnv.diffWholeYears(date0, date1), 'year');
        }
        else if (largeUnit === 'month') {
            return createDuration(dateEnv.diffWholeMonths(date0, date1), 'month');
        }
        else {
            return diffDayAndTime(date0, date1); // returns a duration
        }
    }

    /*! *****************************************************************************
    Copyright (c) Microsoft Corporation. All rights reserved.
    Licensed under the Apache License, Version 2.0 (the "License"); you may not use
    this file except in compliance with the License. You may obtain a copy of the
    License at http://www.apache.org/licenses/LICENSE-2.0

    THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
    WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
    MERCHANTABLITY OR NON-INFRINGEMENT.

    See the Apache Version 2.0 License for specific language governing permissions
    and limitations under the License.
    ***************************************************************************** */
    /* global Reflect, Promise */

    var extendStatics = function(d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };

    function __extends(d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    }

    var __assign = function() {
        __assign = Object.assign || function __assign(t) {
            for (var s, i = 1, n = arguments.length; i < n; i++) {
                s = arguments[i];
                for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
            }
            return t;
        };
        return __assign.apply(this, arguments);
    };

    function parseRecurring(eventInput, allDayDefault, dateEnv, recurringTypes, leftovers) {
        for (var i = 0; i < recurringTypes.length; i++) {
            var localLeftovers = {};
            var parsed = recurringTypes[i].parse(eventInput, localLeftovers, dateEnv);
            if (parsed) {
                var allDay = localLeftovers.allDay;
                delete localLeftovers.allDay; // remove from leftovers
                if (allDay == null) {
                    allDay = allDayDefault;
                    if (allDay == null) {
                        allDay = parsed.allDayGuess;
                        if (allDay == null) {
                            allDay = false;
                        }
                    }
                }
                __assign(leftovers, localLeftovers);
                return {
                    allDay: allDay,
                    duration: parsed.duration,
                    typeData: parsed.typeData,
                    typeId: i
                };
            }
        }
        return null;
    }
    /*
    Event MUST have a recurringDef
    */
    function expandRecurringRanges(eventDef, duration, framingRange, dateEnv, recurringTypes) {
        var typeDef = recurringTypes[eventDef.recurringDef.typeId];
        var markers = typeDef.expand(eventDef.recurringDef.typeData, {
            start: dateEnv.subtract(framingRange.start, duration),
            end: framingRange.end
        }, dateEnv);
        // the recurrence plugins don't guarantee that all-day events are start-of-day, so we have to
        if (eventDef.allDay) {
            markers = markers.map(startOfDay);
        }
        return markers;
    }

    var hasOwnProperty = Object.prototype.hasOwnProperty;
    // Merges an array of objects into a single object.
    // The second argument allows for an array of property names who's object values will be merged together.
    function mergeProps(propObjs, complexProps) {
        var dest = {};
        var i;
        var name;
        var complexObjs;
        var j;
        var val;
        var props;
        if (complexProps) {
            for (i = 0; i < complexProps.length; i++) {
                name = complexProps[i];
                complexObjs = [];
                // collect the trailing object values, stopping when a non-object is discovered
                for (j = propObjs.length - 1; j >= 0; j--) {
                    val = propObjs[j][name];
                    if (typeof val === 'object' && val) { // non-null object
                        complexObjs.unshift(val);
                    }
                    else if (val !== undefined) {
                        dest[name] = val; // if there were no objects, this value will be used
                        break;
                    }
                }
                // if the trailing values were objects, use the merged value
                if (complexObjs.length) {
                    dest[name] = mergeProps(complexObjs);
                }
            }
        }
        // copy values into the destination, going from last to first
        for (i = propObjs.length - 1; i >= 0; i--) {
            props = propObjs[i];
            for (name in props) {
                if (!(name in dest)) { // if already assigned by previous props or complex props, don't reassign
                    dest[name] = props[name];
                }
            }
        }
        return dest;
    }
    function filterHash(hash, func) {
        var filtered = {};
        for (var key in hash) {
            if (func(hash[key], key)) {
                filtered[key] = hash[key];
            }
        }
        return filtered;
    }
    function mapHash(hash, func) {
        var newHash = {};
        for (var key in hash) {
            newHash[key] = func(hash[key], key);
        }
        return newHash;
    }
    function arrayToHash(a) {
        var hash = {};
        for (var _i = 0, a_1 = a; _i < a_1.length; _i++) {
            var item = a_1[_i];
            hash[item] = true;
        }
        return hash;
    }
    function hashValuesToArray(obj) {
        var a = [];
        for (var key in obj) {
            a.push(obj[key]);
        }
        return a;
    }
    function isPropsEqual(obj0, obj1) {
        for (var key in obj0) {
            if (hasOwnProperty.call(obj0, key)) {
                if (!(key in obj1)) {
                    return false;
                }
            }
        }
        for (var key in obj1) {
            if (hasOwnProperty.call(obj1, key)) {
                if (obj0[key] !== obj1[key]) {
                    return false;
                }
            }
        }
        return true;
    }

    function parseEvents(rawEvents, sourceId, calendar, allowOpenRange) {
        var eventStore = createEmptyEventStore();
        for (var _i = 0, rawEvents_1 = rawEvents; _i < rawEvents_1.length; _i++) {
            var rawEvent = rawEvents_1[_i];
            var tuple = parseEvent(rawEvent, sourceId, calendar, allowOpenRange);
            if (tuple) {
                eventTupleToStore(tuple, eventStore);
            }
        }
        return eventStore;
    }
    function eventTupleToStore(tuple, eventStore) {
        if (eventStore === void 0) { eventStore = createEmptyEventStore(); }
        eventStore.defs[tuple.def.defId] = tuple.def;
        if (tuple.instance) {
            eventStore.instances[tuple.instance.instanceId] = tuple.instance;
        }
        return eventStore;
    }
    function expandRecurring(eventStore, framingRange, calendar) {
        var dateEnv = calendar.dateEnv;
        var defs = eventStore.defs, instances = eventStore.instances;
        // remove existing recurring instances
        instances = filterHash(instances, function (instance) {
            return !defs[instance.defId].recurringDef;
        });
        for (var defId in defs) {
            var def = defs[defId];
            if (def.recurringDef) {
                var duration = def.recurringDef.duration;
                if (!duration) {
                    duration = def.allDay ?
                        calendar.defaultAllDayEventDuration :
                        calendar.defaultTimedEventDuration;
                }
                var starts = expandRecurringRanges(def, duration, framingRange, calendar.dateEnv, calendar.pluginSystem.hooks.recurringTypes);
                for (var _i = 0, starts_1 = starts; _i < starts_1.length; _i++) {
                    var start = starts_1[_i];
                    var instance = createEventInstance(defId, {
                        start: start,
                        end: dateEnv.add(start, duration)
                    });
                    instances[instance.instanceId] = instance;
                }
            }
        }
        return { defs: defs, instances: instances };
    }
    // retrieves events that have the same groupId as the instance specified by `instanceId`
    // or they are the same as the instance.
    // why might instanceId not be in the store? an event from another calendar?
    function getRelevantEvents(eventStore, instanceId) {
        var instance = eventStore.instances[instanceId];
        if (instance) {
            var def_1 = eventStore.defs[instance.defId];
            // get events/instances with same group
            var newStore = filterEventStoreDefs(eventStore, function (lookDef) {
                return isEventDefsGrouped(def_1, lookDef);
            });
            // add the original
            // TODO: wish we could use eventTupleToStore or something like it
            newStore.defs[def_1.defId] = def_1;
            newStore.instances[instance.instanceId] = instance;
            return newStore;
        }
        return createEmptyEventStore();
    }
    function isEventDefsGrouped(def0, def1) {
        return Boolean(def0.groupId && def0.groupId === def1.groupId);
    }
    function transformRawEvents(rawEvents, eventSource, calendar) {
        var calEachTransform = calendar.opt('eventDataTransform');
        var sourceEachTransform = eventSource ? eventSource.eventDataTransform : null;
        if (sourceEachTransform) {
            rawEvents = transformEachRawEvent(rawEvents, sourceEachTransform);
        }
        if (calEachTransform) {
            rawEvents = transformEachRawEvent(rawEvents, calEachTransform);
        }
        return rawEvents;
    }
    function transformEachRawEvent(rawEvents, func) {
        var refinedEvents;
        if (!func) {
            refinedEvents = rawEvents;
        }
        else {
            refinedEvents = [];
            for (var _i = 0, rawEvents_2 = rawEvents; _i < rawEvents_2.length; _i++) {
                var rawEvent = rawEvents_2[_i];
                var refinedEvent = func(rawEvent);
                if (refinedEvent) {
                    refinedEvents.push(refinedEvent);
                }
                else if (refinedEvent == null) {
                    refinedEvents.push(rawEvent);
                } // if a different falsy value, do nothing
            }
        }
        return refinedEvents;
    }
    function createEmptyEventStore() {
        return { defs: {}, instances: {} };
    }
    function mergeEventStores(store0, store1) {
        return {
            defs: __assign({}, store0.defs, store1.defs),
            instances: __assign({}, store0.instances, store1.instances)
        };
    }
    function filterEventStoreDefs(eventStore, filterFunc) {
        var defs = filterHash(eventStore.defs, filterFunc);
        var instances = filterHash(eventStore.instances, function (instance) {
            return defs[instance.defId]; // still exists?
        });
        return { defs: defs, instances: instances };
    }

    function parseRange(input, dateEnv) {
        var start = null;
        var end = null;
        if (input.start) {
            start = dateEnv.createMarker(input.start);
        }
        if (input.end) {
            end = dateEnv.createMarker(input.end);
        }
        if (!start && !end) {
            return null;
        }
        if (start && end && end < start) {
            return null;
        }
        return { start: start, end: end };
    }
    // SIDE-EFFECT: will mutate ranges.
    // Will return a new array result.
    function invertRanges(ranges, constraintRange) {
        var invertedRanges = [];
        var start = constraintRange.start; // the end of the previous range. the start of the new range
        var i;
        var dateRange;
        // ranges need to be in order. required for our date-walking algorithm
        ranges.sort(compareRanges);
        for (i = 0; i < ranges.length; i++) {
            dateRange = ranges[i];
            // add the span of time before the event (if there is any)
            if (dateRange.start > start) { // compare millisecond time (skip any ambig logic)
                invertedRanges.push({ start: start, end: dateRange.start });
            }
            if (dateRange.end > start) {
                start = dateRange.end;
            }
        }
        // add the span of time after the last event (if there is any)
        if (start < constraintRange.end) { // compare millisecond time (skip any ambig logic)
            invertedRanges.push({ start: start, end: constraintRange.end });
        }
        return invertedRanges;
    }
    function compareRanges(range0, range1) {
        return range0.start.valueOf() - range1.start.valueOf(); // earlier ranges go first
    }
    function intersectRanges(range0, range1) {
        var start = range0.start;
        var end = range0.end;
        var newRange = null;
        if (range1.start !== null) {
            if (start === null) {
                start = range1.start;
            }
            else {
                start = new Date(Math.max(start.valueOf(), range1.start.valueOf()));
            }
        }
        if (range1.end != null) {
            if (end === null) {
                end = range1.end;
            }
            else {
                end = new Date(Math.min(end.valueOf(), range1.end.valueOf()));
            }
        }
        if (start === null || end === null || start < end) {
            newRange = { start: start, end: end };
        }
        return newRange;
    }
    function rangesEqual(range0, range1) {
        return (range0.start === null ? null : range0.start.valueOf()) === (range1.start === null ? null : range1.start.valueOf()) &&
            (range0.end === null ? null : range0.end.valueOf()) === (range1.end === null ? null : range1.end.valueOf());
    }
    function rangesIntersect(range0, range1) {
        return (range0.end === null || range1.start === null || range0.end > range1.start) &&
            (range0.start === null || range1.end === null || range0.start < range1.end);
    }
    function rangeContainsRange(outerRange, innerRange) {
        return (outerRange.start === null || (innerRange.start !== null && innerRange.start >= outerRange.start)) &&
            (outerRange.end === null || (innerRange.end !== null && innerRange.end <= outerRange.end));
    }
    function rangeContainsMarker(range, date) {
        return (range.start === null || date >= range.start) &&
            (range.end === null || date < range.end);
    }
    // If the given date is not within the given range, move it inside.
    // (If it's past the end, make it one millisecond before the end).
    function constrainMarkerToRange(date, range) {
        if (range.start != null && date < range.start) {
            return range.start;
        }
        if (range.end != null && date >= range.end) {
            return new Date(range.end.valueOf() - 1);
        }
        return date;
    }

    function removeExact(array, exactVal) {
        var removeCnt = 0;
        var i = 0;
        while (i < array.length) {
            if (array[i] === exactVal) {
                array.splice(i, 1);
                removeCnt++;
            }
            else {
                i++;
            }
        }
        return removeCnt;
    }
    function isArraysEqual(a0, a1) {
        var len = a0.length;
        var i;
        if (len !== a1.length) { // not array? or not same length?
            return false;
        }
        for (i = 0; i < len; i++) {
            if (a0[i] !== a1[i]) {
                return false;
            }
        }
        return true;
    }

    function memoize(workerFunc) {
        var args;
        var res;
        return function () {
            if (!args || !isArraysEqual(args, arguments)) {
                args = arguments;
                res = workerFunc.apply(this, arguments);
            }
            return res;
        };
    }
    /*
    always executes the workerFunc, but if the result is equal to the previous result,
    return the previous result instead.
    */
    function memoizeOutput(workerFunc, equalityFunc) {
        var cachedRes = null;
        return function () {
            var newRes = workerFunc.apply(this, arguments);
            if (cachedRes === null || !(cachedRes === newRes || equalityFunc(cachedRes, newRes))) {
                cachedRes = newRes;
            }
            return cachedRes;
        };
    }

    var EXTENDED_SETTINGS_AND_SEVERITIES = {
        week: 3,
        separator: 0,
        omitZeroMinute: 0,
        meridiem: 0,
        omitCommas: 0
    };
    var STANDARD_DATE_PROP_SEVERITIES = {
        timeZoneName: 7,
        era: 6,
        year: 5,
        month: 4,
        day: 2,
        weekday: 2,
        hour: 1,
        minute: 1,
        second: 1
    };
    var MERIDIEM_RE = /\s*([ap])\.?m\.?/i; // eats up leading spaces too
    var COMMA_RE = /,/g; // we need re for globalness
    var MULTI_SPACE_RE = /\s+/g;
    var LTR_RE = /\u200e/g; // control character
    var UTC_RE = /UTC|GMT/;
    var NativeFormatter = /** @class */ (function () {
        function NativeFormatter(formatSettings) {
            var standardDateProps = {};
            var extendedSettings = {};
            var severity = 0;
            for (var name_1 in formatSettings) {
                if (name_1 in EXTENDED_SETTINGS_AND_SEVERITIES) {
                    extendedSettings[name_1] = formatSettings[name_1];
                    severity = Math.max(EXTENDED_SETTINGS_AND_SEVERITIES[name_1], severity);
                }
                else {
                    standardDateProps[name_1] = formatSettings[name_1];
                    if (name_1 in STANDARD_DATE_PROP_SEVERITIES) {
                        severity = Math.max(STANDARD_DATE_PROP_SEVERITIES[name_1], severity);
                    }
                }
            }
            this.standardDateProps = standardDateProps;
            this.extendedSettings = extendedSettings;
            this.severity = severity;
            this.buildFormattingFunc = memoize(buildFormattingFunc);
        }
        NativeFormatter.prototype.format = function (date, context) {
            return this.buildFormattingFunc(this.standardDateProps, this.extendedSettings, context)(date);
        };
        NativeFormatter.prototype.formatRange = function (start, end, context) {
            var _a = this, standardDateProps = _a.standardDateProps, extendedSettings = _a.extendedSettings;
            var diffSeverity = computeMarkerDiffSeverity(start.marker, end.marker, context.calendarSystem);
            if (!diffSeverity) {
                return this.format(start, context);
            }
            var biggestUnitForPartial = diffSeverity;
            if (biggestUnitForPartial > 1 && // the two dates are different in a way that's larger scale than time
                (standardDateProps.year === 'numeric' || standardDateProps.year === '2-digit') &&
                (standardDateProps.month === 'numeric' || standardDateProps.month === '2-digit') &&
                (standardDateProps.day === 'numeric' || standardDateProps.day === '2-digit')) {
                biggestUnitForPartial = 1; // make it look like the dates are only different in terms of time
            }
            var full0 = this.format(start, context);
            var full1 = this.format(end, context);
            if (full0 === full1) {
                return full0;
            }
            var partialDateProps = computePartialFormattingOptions(standardDateProps, biggestUnitForPartial);
            var partialFormattingFunc = buildFormattingFunc(partialDateProps, extendedSettings, context);
            var partial0 = partialFormattingFunc(start);
            var partial1 = partialFormattingFunc(end);
            var insertion = findCommonInsertion(full0, partial0, full1, partial1);
            var separator = extendedSettings.separator || '';
            if (insertion) {
                return insertion.before + partial0 + separator + partial1 + insertion.after;
            }
            return full0 + separator + full1;
        };
        NativeFormatter.prototype.getLargestUnit = function () {
            switch (this.severity) {
                case 7:
                case 6:
                case 5:
                    return 'year';
                case 4:
                    return 'month';
                case 3:
                    return 'week';
                default:
                    return 'day';
            }
        };
        return NativeFormatter;
    }());
    function buildFormattingFunc(standardDateProps, extendedSettings, context) {
        var standardDatePropCnt = Object.keys(standardDateProps).length;
        if (standardDatePropCnt === 1 && standardDateProps.timeZoneName === 'short') {
            return function (date) {
                return formatTimeZoneOffset(date.timeZoneOffset);
            };
        }
        if (standardDatePropCnt === 0 && extendedSettings.week) {
            return function (date) {
                return formatWeekNumber(context.computeWeekNumber(date.marker), context.weekLabel, context.locale, extendedSettings.week);
            };
        }
        return buildNativeFormattingFunc(standardDateProps, extendedSettings, context);
    }
    function buildNativeFormattingFunc(standardDateProps, extendedSettings, context) {
        standardDateProps = __assign({}, standardDateProps); // copy
        extendedSettings = __assign({}, extendedSettings); // copy
        sanitizeSettings(standardDateProps, extendedSettings);
        standardDateProps.timeZone = 'UTC'; // we leverage the only guaranteed timeZone for our UTC markers
        var normalFormat = new Intl.DateTimeFormat(context.locale.codes, standardDateProps);
        var zeroFormat; // needed?
        if (extendedSettings.omitZeroMinute) {
            var zeroProps = __assign({}, standardDateProps);
            delete zeroProps.minute; // seconds and ms were already considered in sanitizeSettings
            zeroFormat = new Intl.DateTimeFormat(context.locale.codes, zeroProps);
        }
        return function (date) {
            var marker = date.marker;
            var format;
            if (zeroFormat && !marker.getUTCMinutes()) {
                format = zeroFormat;
            }
            else {
                format = normalFormat;
            }
            var s = format.format(marker);
            return postProcess(s, date, standardDateProps, extendedSettings, context);
        };
    }
    function sanitizeSettings(standardDateProps, extendedSettings) {
        // deal with a browser inconsistency where formatting the timezone
        // requires that the hour/minute be present.
        if (standardDateProps.timeZoneName) {
            if (!standardDateProps.hour) {
                standardDateProps.hour = '2-digit';
            }
            if (!standardDateProps.minute) {
                standardDateProps.minute = '2-digit';
            }
        }
        // only support short timezone names
        if (standardDateProps.timeZoneName === 'long') {
            standardDateProps.timeZoneName = 'short';
        }
        // if requesting to display seconds, MUST display minutes
        if (extendedSettings.omitZeroMinute && (standardDateProps.second || standardDateProps.millisecond)) {
            delete extendedSettings.omitZeroMinute;
        }
    }
    function postProcess(s, date, standardDateProps, extendedSettings, context) {
        s = s.replace(LTR_RE, ''); // remove left-to-right control chars. do first. good for other regexes
        if (standardDateProps.timeZoneName === 'short') {
            s = injectTzoStr(s, (context.timeZone === 'UTC' || date.timeZoneOffset == null) ?
                'UTC' : // important to normalize for IE, which does "GMT"
                formatTimeZoneOffset(date.timeZoneOffset));
        }
        if (extendedSettings.omitCommas) {
            s = s.replace(COMMA_RE, '').trim();
        }
        if (extendedSettings.omitZeroMinute) {
            s = s.replace(':00', ''); // zeroFormat doesn't always achieve this
        }
        // ^ do anything that might create adjacent spaces before this point,
        // because MERIDIEM_RE likes to eat up loading spaces
        if (extendedSettings.meridiem === false) {
            s = s.replace(MERIDIEM_RE, '').trim();
        }
        else if (extendedSettings.meridiem === 'narrow') { // a/p
            s = s.replace(MERIDIEM_RE, function (m0, m1) {
                return m1.toLocaleLowerCase();
            });
        }
        else if (extendedSettings.meridiem === 'short') { // am/pm
            s = s.replace(MERIDIEM_RE, function (m0, m1) {
                return m1.toLocaleLowerCase() + 'm';
            });
        }
        else if (extendedSettings.meridiem === 'lowercase') { // other meridiem transformers already converted to lowercase
            s = s.replace(MERIDIEM_RE, function (m0) {
                return m0.toLocaleLowerCase();
            });
        }
        s = s.replace(MULTI_SPACE_RE, ' ');
        s = s.trim();
        return s;
    }
    function injectTzoStr(s, tzoStr) {
        var replaced = false;
        s = s.replace(UTC_RE, function () {
            replaced = true;
            return tzoStr;
        });
        // IE11 doesn't include UTC/GMT in the original string, so append to end
        if (!replaced) {
            s += ' ' + tzoStr;
        }
        return s;
    }
    function formatWeekNumber(num, weekLabel, locale, display) {
        var parts = [];
        if (display === 'narrow') {
            parts.push(weekLabel);
        }
        else if (display === 'short') {
            parts.push(weekLabel, ' ');
        }
        // otherwise, considered 'numeric'
        parts.push(locale.simpleNumberFormat.format(num));
        if (locale.options.isRtl) { // TODO: use control characters instead?
            parts.reverse();
        }
        return parts.join('');
    }
    // Range Formatting Utils
    // 0 = exactly the same
    // 1 = different by time
    // and bigger
    function computeMarkerDiffSeverity(d0, d1, ca) {
        if (ca.getMarkerYear(d0) !== ca.getMarkerYear(d1)) {
            return 5;
        }
        if (ca.getMarkerMonth(d0) !== ca.getMarkerMonth(d1)) {
            return 4;
        }
        if (ca.getMarkerDay(d0) !== ca.getMarkerDay(d1)) {
            return 2;
        }
        if (timeAsMs(d0) !== timeAsMs(d1)) {
            return 1;
        }
        return 0;
    }
    function computePartialFormattingOptions(options, biggestUnit) {
        var partialOptions = {};
        for (var name_2 in options) {
            if (!(name_2 in STANDARD_DATE_PROP_SEVERITIES) || // not a date part prop (like timeZone)
                STANDARD_DATE_PROP_SEVERITIES[name_2] <= biggestUnit) {
                partialOptions[name_2] = options[name_2];
            }
        }
        return partialOptions;
    }
    function findCommonInsertion(full0, partial0, full1, partial1) {
        var i0 = 0;
        while (i0 < full0.length) {
            var found0 = full0.indexOf(partial0, i0);
            if (found0 === -1) {
                break;
            }
            var before0 = full0.substr(0, found0);
            i0 = found0 + partial0.length;
            var after0 = full0.substr(i0);
            var i1 = 0;
            while (i1 < full1.length) {
                var found1 = full1.indexOf(partial1, i1);
                if (found1 === -1) {
                    break;
                }
                var before1 = full1.substr(0, found1);
                i1 = found1 + partial1.length;
                var after1 = full1.substr(i1);
                if (before0 === before1 && after0 === after1) {
                    return {
                        before: before0,
                        after: after0
                    };
                }
            }
        }
        return null;
    }

    /*
    TODO: fix the terminology of "formatter" vs "formatting func"
    */
    /*
    At the time of instantiation, this object does not know which cmd-formatting system it will use.
    It receives this at the time of formatting, as a setting.
    */
    var CmdFormatter = /** @class */ (function () {
        function CmdFormatter(cmdStr, separator) {
            this.cmdStr = cmdStr;
            this.separator = separator;
        }
        CmdFormatter.prototype.format = function (date, context) {
            return context.cmdFormatter(this.cmdStr, createVerboseFormattingArg(date, null, context, this.separator));
        };
        CmdFormatter.prototype.formatRange = function (start, end, context) {
            return context.cmdFormatter(this.cmdStr, createVerboseFormattingArg(start, end, context, this.separator));
        };
        return CmdFormatter;
    }());

    var FuncFormatter = /** @class */ (function () {
        function FuncFormatter(func) {
            this.func = func;
        }
        FuncFormatter.prototype.format = function (date, context) {
            return this.func(createVerboseFormattingArg(date, null, context));
        };
        FuncFormatter.prototype.formatRange = function (start, end, context) {
            return this.func(createVerboseFormattingArg(start, end, context));
        };
        return FuncFormatter;
    }());

    // Formatter Object Creation
    function createFormatter(input, defaultSeparator) {
        if (typeof input === 'object' && input) { // non-null object
            if (typeof defaultSeparator === 'string') {
                input = __assign({ separator: defaultSeparator }, input);
            }
            return new NativeFormatter(input);
        }
        else if (typeof input === 'string') {
            return new CmdFormatter(input, defaultSeparator);
        }
        else if (typeof input === 'function') {
            return new FuncFormatter(input);
        }
    }
    // String Utils
    // timeZoneOffset is in minutes
    function buildIsoString(marker, timeZoneOffset, stripZeroTime) {
        if (stripZeroTime === void 0) { stripZeroTime = false; }
        var s = marker.toISOString();
        s = s.replace('.000', '');
        if (stripZeroTime) {
            s = s.replace('T00:00:00Z', '');
        }
        if (s.length > 10) { // time part wasn't stripped, can add timezone info
            if (timeZoneOffset == null) {
                s = s.replace('Z', '');
            }
            else if (timeZoneOffset !== 0) {
                s = s.replace('Z', formatTimeZoneOffset(timeZoneOffset, true));
            }
            // otherwise, its UTC-0 and we want to keep the Z
        }
        return s;
    }
    function formatIsoTimeString(marker) {
        return padStart(marker.getUTCHours(), 2) + ':' +
            padStart(marker.getUTCMinutes(), 2) + ':' +
            padStart(marker.getUTCSeconds(), 2);
    }
    function formatTimeZoneOffset(minutes, doIso) {
        if (doIso === void 0) { doIso = false; }
        var sign = minutes < 0 ? '-' : '+';
        var abs = Math.abs(minutes);
        var hours = Math.floor(abs / 60);
        var mins = Math.round(abs % 60);
        if (doIso) {
            return sign + padStart(hours, 2) + ':' + padStart(mins, 2);
        }
        else {
            return 'GMT' + sign + hours + (mins ? ':' + padStart(mins, 2) : '');
        }
    }
    // Arg Utils
    function createVerboseFormattingArg(start, end, context, separator) {
        var startInfo = expandZonedMarker(start, context.calendarSystem);
        var endInfo = end ? expandZonedMarker(end, context.calendarSystem) : null;
        return {
            date: startInfo,
            start: startInfo,
            end: endInfo,
            timeZone: context.timeZone,
            localeCodes: context.locale.codes,
            separator: separator
        };
    }
    function expandZonedMarker(dateInfo, calendarSystem) {
        var a = calendarSystem.markerToArray(dateInfo.marker);
        return {
            marker: dateInfo.marker,
            timeZoneOffset: dateInfo.timeZoneOffset,
            array: a,
            year: a[0],
            month: a[1],
            day: a[2],
            hour: a[3],
            minute: a[4],
            second: a[5],
            millisecond: a[6]
        };
    }

    var EventSourceApi = /** @class */ (function () {
        function EventSourceApi(calendar, internalEventSource) {
            this.calendar = calendar;
            this.internalEventSource = internalEventSource;
        }
        EventSourceApi.prototype.remove = function () {
            this.calendar.dispatch({
                type: 'REMOVE_EVENT_SOURCE',
                sourceId: this.internalEventSource.sourceId
            });
        };
        EventSourceApi.prototype.refetch = function () {
            this.calendar.dispatch({
                type: 'FETCH_EVENT_SOURCES',
                sourceIds: [this.internalEventSource.sourceId]
            });
        };
        Object.defineProperty(EventSourceApi.prototype, "id", {
            get: function () {
                return this.internalEventSource.publicId;
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventSourceApi.prototype, "url", {
            // only relevant to json-feed event sources
            get: function () {
                return this.internalEventSource.meta.url;
            },
            enumerable: true,
            configurable: true
        });
        return EventSourceApi;
    }());

    var EventApi = /** @class */ (function () {
        function EventApi(calendar, def, instance) {
            this._calendar = calendar;
            this._def = def;
            this._instance = instance || null;
        }
        /*
        TODO: make event struct more responsible for this
        */
        EventApi.prototype.setProp = function (name, val) {
            var _a, _b;
            if (name in DATE_PROPS) ;
            else if (name in NON_DATE_PROPS) {
                if (typeof NON_DATE_PROPS[name] === 'function') {
                    val = NON_DATE_PROPS[name](val);
                }
                this.mutate({
                    standardProps: (_a = {}, _a[name] = val, _a)
                });
            }
            else if (name in UNSCOPED_EVENT_UI_PROPS) {
                var ui = void 0;
                if (typeof UNSCOPED_EVENT_UI_PROPS[name] === 'function') {
                    val = UNSCOPED_EVENT_UI_PROPS[name](val);
                }
                if (name === 'color') {
                    ui = { backgroundColor: val, borderColor: val };
                }
                else if (name === 'editable') {
                    ui = { startEditable: val, durationEditable: val };
                }
                else {
                    ui = (_b = {}, _b[name] = val, _b);
                }
                this.mutate({
                    standardProps: { ui: ui }
                });
            }
        };
        EventApi.prototype.setExtendedProp = function (name, val) {
            var _a;
            this.mutate({
                extendedProps: (_a = {}, _a[name] = val, _a)
            });
        };
        EventApi.prototype.setStart = function (startInput, options) {
            if (options === void 0) { options = {}; }
            var dateEnv = this._calendar.dateEnv;
            var start = dateEnv.createMarker(startInput);
            if (start && this._instance) { // TODO: warning if parsed bad
                var instanceRange = this._instance.range;
                var startDelta = diffDates(instanceRange.start, start, dateEnv, options.granularity); // what if parsed bad!?
                if (options.maintainDuration) {
                    this.mutate({ datesDelta: startDelta });
                }
                else {
                    this.mutate({ startDelta: startDelta });
                }
            }
        };
        EventApi.prototype.setEnd = function (endInput, options) {
            if (options === void 0) { options = {}; }
            var dateEnv = this._calendar.dateEnv;
            var end;
            if (endInput != null) {
                end = dateEnv.createMarker(endInput);
                if (!end) {
                    return; // TODO: warning if parsed bad
                }
            }
            if (this._instance) {
                if (end) {
                    var endDelta = diffDates(this._instance.range.end, end, dateEnv, options.granularity);
                    this.mutate({ endDelta: endDelta });
                }
                else {
                    this.mutate({ standardProps: { hasEnd: false } });
                }
            }
        };
        EventApi.prototype.setDates = function (startInput, endInput, options) {
            if (options === void 0) { options = {}; }
            var dateEnv = this._calendar.dateEnv;
            var standardProps = { allDay: options.allDay };
            var start = dateEnv.createMarker(startInput);
            var end;
            if (!start) {
                return; // TODO: warning if parsed bad
            }
            if (endInput != null) {
                end = dateEnv.createMarker(endInput);
                if (!end) { // TODO: warning if parsed bad
                    return;
                }
            }
            if (this._instance) {
                var instanceRange = this._instance.range;
                // when computing the diff for an event being converted to all-day,
                // compute diff off of the all-day values the way event-mutation does.
                if (options.allDay === true) {
                    instanceRange = computeAlignedDayRange(instanceRange);
                }
                var startDelta = diffDates(instanceRange.start, start, dateEnv, options.granularity);
                if (end) {
                    var endDelta = diffDates(instanceRange.end, end, dateEnv, options.granularity);
                    if (durationsEqual(startDelta, endDelta)) {
                        this.mutate({ datesDelta: startDelta, standardProps: standardProps });
                    }
                    else {
                        this.mutate({ startDelta: startDelta, endDelta: endDelta, standardProps: standardProps });
                    }
                }
                else { // means "clear the end"
                    standardProps.hasEnd = false;
                    this.mutate({ datesDelta: startDelta, standardProps: standardProps });
                }
            }
        };
        EventApi.prototype.moveStart = function (deltaInput) {
            var delta = createDuration(deltaInput);
            if (delta) { // TODO: warning if parsed bad
                this.mutate({ startDelta: delta });
            }
        };
        EventApi.prototype.moveEnd = function (deltaInput) {
            var delta = createDuration(deltaInput);
            if (delta) { // TODO: warning if parsed bad
                this.mutate({ endDelta: delta });
            }
        };
        EventApi.prototype.moveDates = function (deltaInput) {
            var delta = createDuration(deltaInput);
            if (delta) { // TODO: warning if parsed bad
                this.mutate({ datesDelta: delta });
            }
        };
        EventApi.prototype.setAllDay = function (allDay, options) {
            if (options === void 0) { options = {}; }
            var standardProps = { allDay: allDay };
            var maintainDuration = options.maintainDuration;
            if (maintainDuration == null) {
                maintainDuration = this._calendar.opt('allDayMaintainDuration');
            }
            if (this._def.allDay !== allDay) {
                standardProps.hasEnd = maintainDuration;
            }
            this.mutate({ standardProps: standardProps });
        };
        EventApi.prototype.formatRange = function (formatInput) {
            var dateEnv = this._calendar.dateEnv;
            var instance = this._instance;
            var formatter = createFormatter(formatInput, this._calendar.opt('defaultRangeSeparator'));
            if (this._def.hasEnd) {
                return dateEnv.formatRange(instance.range.start, instance.range.end, formatter, {
                    forcedStartTzo: instance.forcedStartTzo,
                    forcedEndTzo: instance.forcedEndTzo
                });
            }
            else {
                return dateEnv.format(instance.range.start, formatter, {
                    forcedTzo: instance.forcedStartTzo
                });
            }
        };
        EventApi.prototype.mutate = function (mutation) {
            var def = this._def;
            var instance = this._instance;
            if (instance) {
                this._calendar.dispatch({
                    type: 'MUTATE_EVENTS',
                    instanceId: instance.instanceId,
                    mutation: mutation,
                    fromApi: true
                });
                var eventStore = this._calendar.state.eventStore;
                this._def = eventStore.defs[def.defId];
                this._instance = eventStore.instances[instance.instanceId];
            }
        };
        EventApi.prototype.remove = function () {
            this._calendar.dispatch({
                type: 'REMOVE_EVENT_DEF',
                defId: this._def.defId
            });
        };
        Object.defineProperty(EventApi.prototype, "source", {
            get: function () {
                var sourceId = this._def.sourceId;
                if (sourceId) {
                    return new EventSourceApi(this._calendar, this._calendar.state.eventSources[sourceId]);
                }
                return null;
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "start", {
            get: function () {
                return this._instance ?
                    this._calendar.dateEnv.toDate(this._instance.range.start) :
                    null;
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "end", {
            get: function () {
                return (this._instance && this._def.hasEnd) ?
                    this._calendar.dateEnv.toDate(this._instance.range.end) :
                    null;
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "id", {
            // computable props that all access the def
            // TODO: find a TypeScript-compatible way to do this at scale
            get: function () { return this._def.publicId; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "groupId", {
            get: function () { return this._def.groupId; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "allDay", {
            get: function () { return this._def.allDay; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "title", {
            get: function () { return this._def.title; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "url", {
            get: function () { return this._def.url; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "rendering", {
            get: function () { return this._def.rendering; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "startEditable", {
            get: function () { return this._def.ui.startEditable; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "durationEditable", {
            get: function () { return this._def.ui.durationEditable; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "constraint", {
            get: function () { return this._def.ui.constraints[0] || null; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "overlap", {
            get: function () { return this._def.ui.overlap; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "allow", {
            get: function () { return this._def.ui.allows[0] || null; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "backgroundColor", {
            get: function () { return this._def.ui.backgroundColor; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "borderColor", {
            get: function () { return this._def.ui.borderColor; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "textColor", {
            get: function () { return this._def.ui.textColor; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "classNames", {
            // NOTE: user can't modify these because Object.freeze was called in event-def parsing
            get: function () { return this._def.ui.classNames; },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(EventApi.prototype, "extendedProps", {
            get: function () { return this._def.extendedProps; },
            enumerable: true,
            configurable: true
        });
        return EventApi;
    }());

    /*
    Specifying nextDayThreshold signals that all-day ranges should be sliced.
    */
    function sliceEventStore(eventStore, eventUiBases, framingRange, nextDayThreshold) {
        var inverseBgByGroupId = {};
        var inverseBgByDefId = {};
        var defByGroupId = {};
        var bgRanges = [];
        var fgRanges = [];
        var eventUis = compileEventUis(eventStore.defs, eventUiBases);
        for (var defId in eventStore.defs) {
            var def = eventStore.defs[defId];
            if (def.rendering === 'inverse-background') {
                if (def.groupId) {
                    inverseBgByGroupId[def.groupId] = [];
                    if (!defByGroupId[def.groupId]) {
                        defByGroupId[def.groupId] = def;
                    }
                }
                else {
                    inverseBgByDefId[defId] = [];
                }
            }
        }
        for (var instanceId in eventStore.instances) {
            var instance = eventStore.instances[instanceId];
            var def = eventStore.defs[instance.defId];
            var ui = eventUis[def.defId];
            var origRange = instance.range;
            var normalRange = (!def.allDay && nextDayThreshold) ?
                computeVisibleDayRange(origRange, nextDayThreshold) :
                origRange;
            var slicedRange = intersectRanges(normalRange, framingRange);
            if (slicedRange) {
                if (def.rendering === 'inverse-background') {
                    if (def.groupId) {
                        inverseBgByGroupId[def.groupId].push(slicedRange);
                    }
                    else {
                        inverseBgByDefId[instance.defId].push(slicedRange);
                    }
                }
                else {
                    (def.rendering === 'background' ? bgRanges : fgRanges).push({
                        def: def,
                        ui: ui,
                        instance: instance,
                        range: slicedRange,
                        isStart: normalRange.start && normalRange.start.valueOf() === slicedRange.start.valueOf(),
                        isEnd: normalRange.end && normalRange.end.valueOf() === slicedRange.end.valueOf()
                    });
                }
            }
        }
        for (var groupId in inverseBgByGroupId) { // BY GROUP
            var ranges = inverseBgByGroupId[groupId];
            var invertedRanges = invertRanges(ranges, framingRange);
            for (var _i = 0, invertedRanges_1 = invertedRanges; _i < invertedRanges_1.length; _i++) {
                var invertedRange = invertedRanges_1[_i];
                var def = defByGroupId[groupId];
                var ui = eventUis[def.defId];
                bgRanges.push({
                    def: def,
                    ui: ui,
                    instance: null,
                    range: invertedRange,
                    isStart: false,
                    isEnd: false
                });
            }
        }
        for (var defId in inverseBgByDefId) {
            var ranges = inverseBgByDefId[defId];
            var invertedRanges = invertRanges(ranges, framingRange);
            for (var _a = 0, invertedRanges_2 = invertedRanges; _a < invertedRanges_2.length; _a++) {
                var invertedRange = invertedRanges_2[_a];
                bgRanges.push({
                    def: eventStore.defs[defId],
                    ui: eventUis[defId],
                    instance: null,
                    range: invertedRange,
                    isStart: false,
                    isEnd: false
                });
            }
        }
        return { bg: bgRanges, fg: fgRanges };
    }
    function hasBgRendering(def) {
        return def.rendering === 'background' || def.rendering === 'inverse-background';
    }
    function filterSegsViaEls(context, segs, isMirror) {
        var calendar = context.calendar, view = context.view;
        if (calendar.hasPublicHandlers('eventRender')) {
            segs = segs.filter(function (seg) {
                var custom = calendar.publiclyTrigger('eventRender', [
                    {
                        event: new EventApi(calendar, seg.eventRange.def, seg.eventRange.instance),
                        isMirror: isMirror,
                        isStart: seg.isStart,
                        isEnd: seg.isEnd,
                        // TODO: include seg.range once all components consistently generate it
                        el: seg.el,
                        view: view
                    }
                ]);
                if (custom === false) { // means don't render at all
                    return false;
                }
                else if (custom && custom !== true) {
                    seg.el = custom;
                }
                return true;
            });
        }
        for (var _i = 0, segs_1 = segs; _i < segs_1.length; _i++) {
            var seg = segs_1[_i];
            setElSeg(seg.el, seg);
        }
        return segs;
    }
    function setElSeg(el, seg) {
        el.fcSeg = seg;
    }
    function getElSeg(el) {
        return el.fcSeg || null;
    }
    // event ui computation
    function compileEventUis(eventDefs, eventUiBases) {
        return mapHash(eventDefs, function (eventDef) {
            return compileEventUi(eventDef, eventUiBases);
        });
    }
    function compileEventUi(eventDef, eventUiBases) {
        var uis = [];
        if (eventUiBases['']) {
            uis.push(eventUiBases['']);
        }
        if (eventUiBases[eventDef.defId]) {
            uis.push(eventUiBases[eventDef.defId]);
        }
        uis.push(eventDef.ui);
        return combineEventUis(uis);
    }
    // triggers
    function triggerRenderedSegs(context, segs, isMirrors) {
        var calendar = context.calendar, view = context.view;
        if (calendar.hasPublicHandlers('eventPositioned')) {
            for (var _i = 0, segs_2 = segs; _i < segs_2.length; _i++) {
                var seg = segs_2[_i];
                calendar.publiclyTriggerAfterSizing('eventPositioned', [
                    {
                        event: new EventApi(calendar, seg.eventRange.def, seg.eventRange.instance),
                        isMirror: isMirrors,
                        isStart: seg.isStart,
                        isEnd: seg.isEnd,
                        el: seg.el,
                        view: view
                    }
                ]);
            }
        }
        if (!calendar.state.loadingLevel) { // avoid initial empty state while pending
            calendar.afterSizingTriggers._eventsPositioned = [null]; // fire once
        }
    }
    function triggerWillRemoveSegs(context, segs, isMirrors) {
        var calendar = context.calendar, view = context.view;
        for (var _i = 0, segs_3 = segs; _i < segs_3.length; _i++) {
            var seg = segs_3[_i];
            calendar.trigger('eventElRemove', seg.el);
        }
        if (calendar.hasPublicHandlers('eventDestroy')) {
            for (var _a = 0, segs_4 = segs; _a < segs_4.length; _a++) {
                var seg = segs_4[_a];
                calendar.publiclyTrigger('eventDestroy', [
                    {
                        event: new EventApi(calendar, seg.eventRange.def, seg.eventRange.instance),
                        isMirror: isMirrors,
                        el: seg.el,
                        view: view
                    }
                ]);
            }
        }
    }
    // is-interactable
    function computeEventDraggable(context, eventDef, eventUi) {
        var calendar = context.calendar, view = context.view;
        var transformers = calendar.pluginSystem.hooks.isDraggableTransformers;
        var val = eventUi.startEditable;
        for (var _i = 0, transformers_1 = transformers; _i < transformers_1.length; _i++) {
            var transformer = transformers_1[_i];
            val = transformer(val, eventDef, eventUi, view);
        }
        return val;
    }
    function computeEventStartResizable(context, eventDef, eventUi) {
        return eventUi.durationEditable && context.options.eventResizableFromStart;
    }
    function computeEventEndResizable(context, eventDef, eventUi) {
        return eventUi.durationEditable;
    }

    // applies the mutation to ALL defs/instances within the event store
    function applyMutationToEventStore(eventStore, eventConfigBase, mutation, calendar) {
        var eventConfigs = compileEventUis(eventStore.defs, eventConfigBase);
        var dest = createEmptyEventStore();
        for (var defId in eventStore.defs) {
            var def = eventStore.defs[defId];
            dest.defs[defId] = applyMutationToEventDef(def, eventConfigs[defId], mutation, calendar.pluginSystem.hooks.eventDefMutationAppliers, calendar);
        }
        for (var instanceId in eventStore.instances) {
            var instance = eventStore.instances[instanceId];
            var def = dest.defs[instance.defId]; // important to grab the newly modified def
            dest.instances[instanceId] = applyMutationToEventInstance(instance, def, eventConfigs[instance.defId], mutation, calendar);
        }
        return dest;
    }
    function applyMutationToEventDef(eventDef, eventConfig, mutation, appliers, calendar) {
        var standardProps = mutation.standardProps || {};
        // if hasEnd has not been specified, guess a good value based on deltas.
        // if duration will change, there's no way the default duration will persist,
        // and thus, we need to mark the event as having a real end
        if (standardProps.hasEnd == null &&
            eventConfig.durationEditable &&
            (mutation.startDelta || mutation.endDelta)) {
            standardProps.hasEnd = true; // TODO: is this mutation okay?
        }
        var copy = __assign({}, eventDef, standardProps, { ui: __assign({}, eventDef.ui, standardProps.ui) });
        if (mutation.extendedProps) {
            copy.extendedProps = __assign({}, copy.extendedProps, mutation.extendedProps);
        }
        for (var _i = 0, appliers_1 = appliers; _i < appliers_1.length; _i++) {
            var applier = appliers_1[_i];
            applier(copy, mutation, calendar);
        }
        if (!copy.hasEnd && calendar.opt('forceEventDuration')) {
            copy.hasEnd = true;
        }
        return copy;
    }
    function applyMutationToEventInstance(eventInstance, eventDef, // must first be modified by applyMutationToEventDef
    eventConfig, mutation, calendar) {
        var dateEnv = calendar.dateEnv;
        var forceAllDay = mutation.standardProps && mutation.standardProps.allDay === true;
        var clearEnd = mutation.standardProps && mutation.standardProps.hasEnd === false;
        var copy = __assign({}, eventInstance);
        if (forceAllDay) {
            copy.range = computeAlignedDayRange(copy.range);
        }
        if (mutation.datesDelta && eventConfig.startEditable) {
            copy.range = {
                start: dateEnv.add(copy.range.start, mutation.datesDelta),
                end: dateEnv.add(copy.range.end, mutation.datesDelta)
            };
        }
        if (mutation.startDelta && eventConfig.durationEditable) {
            copy.range = {
                start: dateEnv.add(copy.range.start, mutation.startDelta),
                end: copy.range.end
            };
        }
        if (mutation.endDelta && eventConfig.durationEditable) {
            copy.range = {
                start: copy.range.start,
                end: dateEnv.add(copy.range.end, mutation.endDelta)
            };
        }
        if (clearEnd) {
            copy.range = {
                start: copy.range.start,
                end: calendar.getDefaultEventEnd(eventDef.allDay, copy.range.start)
            };
        }
        // in case event was all-day but the supplied deltas were not
        // better util for this?
        if (eventDef.allDay) {
            copy.range = {
                start: startOfDay(copy.range.start),
                end: startOfDay(copy.range.end)
            };
        }
        // handle invalid durations
        if (copy.range.end < copy.range.start) {
            copy.range.end = calendar.getDefaultEventEnd(eventDef.allDay, copy.range.start);
        }
        return copy;
    }

    function reduceEventStore (eventStore, action, eventSources, dateProfile, calendar) {
        switch (action.type) {
            case 'RECEIVE_EVENTS': // raw
                return receiveRawEvents(eventStore, eventSources[action.sourceId], action.fetchId, action.fetchRange, action.rawEvents, calendar);
            case 'ADD_EVENTS': // already parsed, but not expanded
                return addEvent(eventStore, action.eventStore, // new ones
                dateProfile ? dateProfile.activeRange : null, calendar);
            case 'MERGE_EVENTS': // already parsed and expanded
                return mergeEventStores(eventStore, action.eventStore);
            case 'PREV': // TODO: how do we track all actions that affect dateProfile :(
            case 'NEXT':
            case 'SET_DATE':
            case 'SET_VIEW_TYPE':
                if (dateProfile) {
                    return expandRecurring(eventStore, dateProfile.activeRange, calendar);
                }
                else {
                    return eventStore;
                }
            case 'CHANGE_TIMEZONE':
                return rezoneDates(eventStore, action.oldDateEnv, calendar.dateEnv);
            case 'MUTATE_EVENTS':
                return applyMutationToRelated(eventStore, action.instanceId, action.mutation, action.fromApi, calendar);
            case 'REMOVE_EVENT_INSTANCES':
                return excludeInstances(eventStore, action.instances);
            case 'REMOVE_EVENT_DEF':
                return filterEventStoreDefs(eventStore, function (eventDef) {
                    return eventDef.defId !== action.defId;
                });
            case 'REMOVE_EVENT_SOURCE':
                return excludeEventsBySourceId(eventStore, action.sourceId);
            case 'REMOVE_ALL_EVENT_SOURCES':
                return filterEventStoreDefs(eventStore, function (eventDef) {
                    return !eventDef.sourceId; // only keep events with no source id
                });
            case 'REMOVE_ALL_EVENTS':
                return createEmptyEventStore();
            case 'RESET_EVENTS':
                return {
                    defs: eventStore.defs,
                    instances: eventStore.instances
                };
            default:
                return eventStore;
        }
    }
    function receiveRawEvents(eventStore, eventSource, fetchId, fetchRange, rawEvents, calendar) {
        if (eventSource && // not already removed
            fetchId === eventSource.latestFetchId // TODO: wish this logic was always in event-sources
        ) {
            var subset = parseEvents(transformRawEvents(rawEvents, eventSource, calendar), eventSource.sourceId, calendar);
            if (fetchRange) {
                subset = expandRecurring(subset, fetchRange, calendar);
            }
            return mergeEventStores(excludeEventsBySourceId(eventStore, eventSource.sourceId), subset);
        }
        return eventStore;
    }
    function addEvent(eventStore, subset, expandRange, calendar) {
        if (expandRange) {
            subset = expandRecurring(subset, expandRange, calendar);
        }
        return mergeEventStores(eventStore, subset);
    }
    function rezoneDates(eventStore, oldDateEnv, newDateEnv) {
        var defs = eventStore.defs;
        var instances = mapHash(eventStore.instances, function (instance) {
            var def = defs[instance.defId];
            if (def.allDay || def.recurringDef) {
                return instance; // isn't dependent on timezone
            }
            else {
                return __assign({}, instance, { range: {
                        start: newDateEnv.createMarker(oldDateEnv.toDate(instance.range.start, instance.forcedStartTzo)),
                        end: newDateEnv.createMarker(oldDateEnv.toDate(instance.range.end, instance.forcedEndTzo))
                    }, forcedStartTzo: newDateEnv.canComputeOffset ? null : instance.forcedStartTzo, forcedEndTzo: newDateEnv.canComputeOffset ? null : instance.forcedEndTzo });
            }
        });
        return { defs: defs, instances: instances };
    }
    function applyMutationToRelated(eventStore, instanceId, mutation, fromApi, calendar) {
        var relevant = getRelevantEvents(eventStore, instanceId);
        var eventConfigBase = fromApi ?
            { '': {
                    startEditable: true,
                    durationEditable: true,
                    constraints: [],
                    overlap: null,
                    allows: [],
                    backgroundColor: '',
                    borderColor: '',
                    textColor: '',
                    classNames: []
                } } :
            calendar.eventUiBases;
        relevant = applyMutationToEventStore(relevant, eventConfigBase, mutation, calendar);
        return mergeEventStores(eventStore, relevant);
    }
    function excludeEventsBySourceId(eventStore, sourceId) {
        return filterEventStoreDefs(eventStore, function (eventDef) {
            return eventDef.sourceId !== sourceId;
        });
    }
    // QUESTION: why not just return instances? do a general object-property-exclusion util
    function excludeInstances(eventStore, removals) {
        return {
            defs: eventStore.defs,
            instances: filterHash(eventStore.instances, function (instance) {
                return !removals[instance.instanceId];
            })
        };
    }

    // high-level segmenting-aware tester functions
    // ------------------------------------------------------------------------------------------------------------------------
    function isInteractionValid(interaction, calendar) {
        return isNewPropsValid({ eventDrag: interaction }, calendar); // HACK: the eventDrag props is used for ALL interactions
    }
    function isDateSelectionValid(dateSelection, calendar) {
        return isNewPropsValid({ dateSelection: dateSelection }, calendar);
    }
    function isNewPropsValid(newProps, calendar) {
        var view = calendar.view;
        var props = __assign({ businessHours: view ? view.props.businessHours : createEmptyEventStore(), dateSelection: '', eventStore: calendar.state.eventStore, eventUiBases: calendar.eventUiBases, eventSelection: '', eventDrag: null, eventResize: null }, newProps);
        return (calendar.pluginSystem.hooks.isPropsValid || isPropsValid)(props, calendar);
    }
    function isPropsValid(state, calendar, dateSpanMeta, filterConfig) {
        if (dateSpanMeta === void 0) { dateSpanMeta = {}; }
        if (state.eventDrag && !isInteractionPropsValid(state, calendar, dateSpanMeta, filterConfig)) {
            return false;
        }
        if (state.dateSelection && !isDateSelectionPropsValid(state, calendar, dateSpanMeta, filterConfig)) {
            return false;
        }
        return true;
    }
    // Moving Event Validation
    // ------------------------------------------------------------------------------------------------------------------------
    function isInteractionPropsValid(state, calendar, dateSpanMeta, filterConfig) {
        var interaction = state.eventDrag; // HACK: the eventDrag props is used for ALL interactions
        var subjectEventStore = interaction.mutatedEvents;
        var subjectDefs = subjectEventStore.defs;
        var subjectInstances = subjectEventStore.instances;
        var subjectConfigs = compileEventUis(subjectDefs, interaction.isEvent ?
            state.eventUiBases :
            { '': calendar.selectionConfig } // if not a real event, validate as a selection
        );
        if (filterConfig) {
            subjectConfigs = mapHash(subjectConfigs, filterConfig);
        }
        var otherEventStore = excludeInstances(state.eventStore, interaction.affectedEvents.instances); // exclude the subject events. TODO: exclude defs too?
        var otherDefs = otherEventStore.defs;
        var otherInstances = otherEventStore.instances;
        var otherConfigs = compileEventUis(otherDefs, state.eventUiBases);
        for (var subjectInstanceId in subjectInstances) {
            var subjectInstance = subjectInstances[subjectInstanceId];
            var subjectRange = subjectInstance.range;
            var subjectConfig = subjectConfigs[subjectInstance.defId];
            var subjectDef = subjectDefs[subjectInstance.defId];
            // constraint
            if (!allConstraintsPass(subjectConfig.constraints, subjectRange, otherEventStore, state.businessHours, calendar)) {
                return false;
            }
            // overlap
            var overlapFunc = calendar.opt('eventOverlap');
            if (typeof overlapFunc !== 'function') {
                overlapFunc = null;
            }
            for (var otherInstanceId in otherInstances) {
                var otherInstance = otherInstances[otherInstanceId];
                // intersect! evaluate
                if (rangesIntersect(subjectRange, otherInstance.range)) {
                    var otherOverlap = otherConfigs[otherInstance.defId].overlap;
                    // consider the other event's overlap. only do this if the subject event is a "real" event
                    if (otherOverlap === false && interaction.isEvent) {
                        return false;
                    }
                    if (subjectConfig.overlap === false) {
                        return false;
                    }
                    if (overlapFunc && !overlapFunc(new EventApi(calendar, otherDefs[otherInstance.defId], otherInstance), // still event
                    new EventApi(calendar, subjectDef, subjectInstance) // moving event
                    )) {
                        return false;
                    }
                }
            }
            // allow (a function)
            var calendarEventStore = calendar.state.eventStore; // need global-to-calendar, not local to component (splittable)state
            for (var _i = 0, _a = subjectConfig.allows; _i < _a.length; _i++) {
                var subjectAllow = _a[_i];
                var subjectDateSpan = __assign({}, dateSpanMeta, { range: subjectInstance.range, allDay: subjectDef.allDay });
                var origDef = calendarEventStore.defs[subjectDef.defId];
                var origInstance = calendarEventStore.instances[subjectInstanceId];
                var eventApi = void 0;
                if (origDef) { // was previously in the calendar
                    eventApi = new EventApi(calendar, origDef, origInstance);
                }
                else { // was an external event
                    eventApi = new EventApi(calendar, subjectDef); // no instance, because had no dates
                }
                if (!subjectAllow(calendar.buildDateSpanApi(subjectDateSpan), eventApi)) {
                    return false;
                }
            }
        }
        return true;
    }
    // Date Selection Validation
    // ------------------------------------------------------------------------------------------------------------------------
    function isDateSelectionPropsValid(state, calendar, dateSpanMeta, filterConfig) {
        var relevantEventStore = state.eventStore;
        var relevantDefs = relevantEventStore.defs;
        var relevantInstances = relevantEventStore.instances;
        var selection = state.dateSelection;
        var selectionRange = selection.range;
        var selectionConfig = calendar.selectionConfig;
        if (filterConfig) {
            selectionConfig = filterConfig(selectionConfig);
        }
        // constraint
        if (!allConstraintsPass(selectionConfig.constraints, selectionRange, relevantEventStore, state.businessHours, calendar)) {
            return false;
        }
        // overlap
        var overlapFunc = calendar.opt('selectOverlap');
        if (typeof overlapFunc !== 'function') {
            overlapFunc = null;
        }
        for (var relevantInstanceId in relevantInstances) {
            var relevantInstance = relevantInstances[relevantInstanceId];
            // intersect! evaluate
            if (rangesIntersect(selectionRange, relevantInstance.range)) {
                if (selectionConfig.overlap === false) {
                    return false;
                }
                if (overlapFunc && !overlapFunc(new EventApi(calendar, relevantDefs[relevantInstance.defId], relevantInstance))) {
                    return false;
                }
            }
        }
        // allow (a function)
        for (var _i = 0, _a = selectionConfig.allows; _i < _a.length; _i++) {
            var selectionAllow = _a[_i];
            var fullDateSpan = __assign({}, dateSpanMeta, selection);
            if (!selectionAllow(calendar.buildDateSpanApi(fullDateSpan), null)) {
                return false;
            }
        }
        return true;
    }
    // Constraint Utils
    // ------------------------------------------------------------------------------------------------------------------------
    function allConstraintsPass(constraints, subjectRange, otherEventStore, businessHoursUnexpanded, calendar) {
        for (var _i = 0, constraints_1 = constraints; _i < constraints_1.length; _i++) {
            var constraint = constraints_1[_i];
            if (!anyRangesContainRange(constraintToRanges(constraint, subjectRange, otherEventStore, businessHoursUnexpanded, calendar), subjectRange)) {
                return false;
            }
        }
        return true;
    }
    function constraintToRanges(constraint, subjectRange, // for expanding a recurring constraint, or expanding business hours
    otherEventStore, // for if constraint is an even group ID
    businessHoursUnexpanded, // for if constraint is 'businessHours'
    calendar // for expanding businesshours
    ) {
        if (constraint === 'businessHours') {
            return eventStoreToRanges(expandRecurring(businessHoursUnexpanded, subjectRange, calendar));
        }
        else if (typeof constraint === 'string') { // an group ID
            return eventStoreToRanges(filterEventStoreDefs(otherEventStore, function (eventDef) {
                return eventDef.groupId === constraint;
            }));
        }
        else if (typeof constraint === 'object' && constraint) { // non-null object
            return eventStoreToRanges(expandRecurring(constraint, subjectRange, calendar));
        }
        return []; // if it's false
    }
    // TODO: move to event-store file?
    function eventStoreToRanges(eventStore) {
        var instances = eventStore.instances;
        var ranges = [];
        for (var instanceId in instances) {
            ranges.push(instances[instanceId].range);
        }
        return ranges;
    }
    // TODO: move to geom file?
    function anyRangesContainRange(outerRanges, innerRange) {
        for (var _i = 0, outerRanges_1 = outerRanges; _i < outerRanges_1.length; _i++) {
            var outerRange = outerRanges_1[_i];
            if (rangeContainsRange(outerRange, innerRange)) {
                return true;
            }
        }
        return false;
    }
    // Parsing
    // ------------------------------------------------------------------------------------------------------------------------
    function normalizeConstraint(input, calendar) {
        if (Array.isArray(input)) {
            return parseEvents(input, '', calendar, true); // allowOpenRange=true
        }
        else if (typeof input === 'object' && input) { // non-null object
            return parseEvents([input], '', calendar, true); // allowOpenRange=true
        }
        else if (input != null) {
            return String(input);
        }
        else {
            return null;
        }
    }

    function htmlEscape(s) {
        return (s + '').replace(/&/g, '&amp;')
            .replace(/</g, '&lt;')
            .replace(/>/g, '&gt;')
            .replace(/'/g, '&#039;')
            .replace(/"/g, '&quot;')
            .replace(/\n/g, '<br />');
    }
    // Given a hash of CSS properties, returns a string of CSS.
    // Uses property names as-is (no camel-case conversion). Will not make statements for null/undefined values.
    function cssToStr(cssProps) {
        var statements = [];
        for (var name_1 in cssProps) {
            var val = cssProps[name_1];
            if (val != null && val !== '') {
                statements.push(name_1 + ':' + val);
            }
        }
        return statements.join(';');
    }
    // Given an object hash of HTML attribute names to values,
    // generates a string that can be injected between < > in HTML
    function attrsToStr(attrs) {
        var parts = [];
        for (var name_2 in attrs) {
            var val = attrs[name_2];
            if (val != null) {
                parts.push(name_2 + '="' + htmlEscape(val) + '"');
            }
        }
        return parts.join(' ');
    }
    function parseClassName(raw) {
        if (Array.isArray(raw)) {
            return raw;
        }
        else if (typeof raw === 'string') {
            return raw.split(/\s+/);
        }
        else {
            return [];
        }
    }

    var UNSCOPED_EVENT_UI_PROPS = {
        editable: Boolean,
        startEditable: Boolean,
        durationEditable: Boolean,
        constraint: null,
        overlap: null,
        allow: null,
        className: parseClassName,
        classNames: parseClassName,
        color: String,
        backgroundColor: String,
        borderColor: String,
        textColor: String
    };
    function processUnscopedUiProps(rawProps, calendar, leftovers) {
        var props = refineProps(rawProps, UNSCOPED_EVENT_UI_PROPS, {}, leftovers);
        var constraint = normalizeConstraint(props.constraint, calendar);
        return {
            startEditable: props.startEditable != null ? props.startEditable : props.editable,
            durationEditable: props.durationEditable != null ? props.durationEditable : props.editable,
            constraints: constraint != null ? [constraint] : [],
            overlap: props.overlap,
            allows: props.allow != null ? [props.allow] : [],
            backgroundColor: props.backgroundColor || props.color,
            borderColor: props.borderColor || props.color,
            textColor: props.textColor,
            classNames: props.classNames.concat(props.className)
        };
    }
    function processScopedUiProps(prefix, rawScoped, calendar, leftovers) {
        var rawUnscoped = {};
        var wasFound = {};
        for (var key in UNSCOPED_EVENT_UI_PROPS) {
            var scopedKey = prefix + capitaliseFirstLetter(key);
            rawUnscoped[key] = rawScoped[scopedKey];
            wasFound[scopedKey] = true;
        }
        if (prefix === 'event') {
            rawUnscoped.editable = rawScoped.editable; // special case. there is no 'eventEditable', just 'editable'
        }
        if (leftovers) {
            for (var key in rawScoped) {
                if (!wasFound[key]) {
                    leftovers[key] = rawScoped[key];
                }
            }
        }
        return processUnscopedUiProps(rawUnscoped, calendar);
    }
    var EMPTY_EVENT_UI = {
        startEditable: null,
        durationEditable: null,
        constraints: [],
        overlap: null,
        allows: [],
        backgroundColor: '',
        borderColor: '',
        textColor: '',
        classNames: []
    };
    // prevent against problems with <2 args!
    function combineEventUis(uis) {
        return uis.reduce(combineTwoEventUis, EMPTY_EVENT_UI);
    }
    function combineTwoEventUis(item0, item1) {
        return {
            startEditable: item1.startEditable != null ? item1.startEditable : item0.startEditable,
            durationEditable: item1.durationEditable != null ? item1.durationEditable : item0.durationEditable,
            constraints: item0.constraints.concat(item1.constraints),
            overlap: typeof item1.overlap === 'boolean' ? item1.overlap : item0.overlap,
            allows: item0.allows.concat(item1.allows),
            backgroundColor: item1.backgroundColor || item0.backgroundColor,
            borderColor: item1.borderColor || item0.borderColor,
            textColor: item1.textColor || item0.textColor,
            classNames: item0.classNames.concat(item1.classNames)
        };
    }

    var NON_DATE_PROPS = {
        id: String,
        groupId: String,
        title: String,
        url: String,
        rendering: String,
        extendedProps: null
    };
    var DATE_PROPS = {
        start: null,
        date: null,
        end: null,
        allDay: null
    };
    var uid = 0;
    function parseEvent(raw, sourceId, calendar, allowOpenRange) {
        var allDayDefault = computeIsAllDayDefault(sourceId, calendar);
        var leftovers0 = {};
        var recurringRes = parseRecurring(raw, // raw, but with single-event stuff stripped out
        allDayDefault, calendar.dateEnv, calendar.pluginSystem.hooks.recurringTypes, leftovers0 // will populate with non-recurring props
        );
        if (recurringRes) {
            var def = parseEventDef(leftovers0, sourceId, recurringRes.allDay, Boolean(recurringRes.duration), calendar);
            def.recurringDef = {
                typeId: recurringRes.typeId,
                typeData: recurringRes.typeData,
                duration: recurringRes.duration
            };
            return { def: def, instance: null };
        }
        else {
            var leftovers1 = {};
            var singleRes = parseSingle(raw, allDayDefault, calendar, leftovers1, allowOpenRange);
            if (singleRes) {
                var def = parseEventDef(leftovers1, sourceId, singleRes.allDay, singleRes.hasEnd, calendar);
                var instance = createEventInstance(def.defId, singleRes.range, singleRes.forcedStartTzo, singleRes.forcedEndTzo);
                return { def: def, instance: instance };
            }
        }
        return null;
    }
    /*
    Will NOT populate extendedProps with the leftover properties.
    Will NOT populate date-related props.
    The EventNonDateInput has been normalized (id => publicId, etc).
    */
    function parseEventDef(raw, sourceId, allDay, hasEnd, calendar) {
        var leftovers = {};
        var def = pluckNonDateProps(raw, calendar, leftovers);
        def.defId = String(uid++);
        def.sourceId = sourceId;
        def.allDay = allDay;
        def.hasEnd = hasEnd;
        for (var _i = 0, _a = calendar.pluginSystem.hooks.eventDefParsers; _i < _a.length; _i++) {
            var eventDefParser = _a[_i];
            var newLeftovers = {};
            eventDefParser(def, leftovers, newLeftovers);
            leftovers = newLeftovers;
        }
        def.extendedProps = __assign(leftovers, def.extendedProps || {});
        // help out EventApi from having user modify props
        Object.freeze(def.ui.classNames);
        Object.freeze(def.extendedProps);
        return def;
    }
    function createEventInstance(defId, range, forcedStartTzo, forcedEndTzo) {
        return {
            instanceId: String(uid++),
            defId: defId,
            range: range,
            forcedStartTzo: forcedStartTzo == null ? null : forcedStartTzo,
            forcedEndTzo: forcedEndTzo == null ? null : forcedEndTzo
        };
    }
    function parseSingle(raw, allDayDefault, calendar, leftovers, allowOpenRange) {
        var props = pluckDateProps(raw, leftovers);
        var allDay = props.allDay;
        var startMeta;
        var startMarker = null;
        var hasEnd = false;
        var endMeta;
        var endMarker = null;
        startMeta = calendar.dateEnv.createMarkerMeta(props.start);
        if (startMeta) {
            startMarker = startMeta.marker;
        }
        else if (!allowOpenRange) {
            return null;
        }
        if (props.end != null) {
            endMeta = calendar.dateEnv.createMarkerMeta(props.end);
        }
        if (allDay == null) {
            if (allDayDefault != null) {
                allDay = allDayDefault;
            }
            else {
                // fall back to the date props LAST
                allDay = (!startMeta || startMeta.isTimeUnspecified) &&
                    (!endMeta || endMeta.isTimeUnspecified);
            }
        }
        if (allDay && startMarker) {
            startMarker = startOfDay(startMarker);
        }
        if (endMeta) {
            endMarker = endMeta.marker;
            if (allDay) {
                endMarker = startOfDay(endMarker);
            }
            if (startMarker && endMarker <= startMarker) {
                endMarker = null;
            }
        }
        if (endMarker) {
            hasEnd = true;
        }
        else if (!allowOpenRange) {
            hasEnd = calendar.opt('forceEventDuration') || false;
            endMarker = calendar.dateEnv.add(startMarker, allDay ?
                calendar.defaultAllDayEventDuration :
                calendar.defaultTimedEventDuration);
        }
        return {
            allDay: allDay,
            hasEnd: hasEnd,
            range: { start: startMarker, end: endMarker },
            forcedStartTzo: startMeta ? startMeta.forcedTzo : null,
            forcedEndTzo: endMeta ? endMeta.forcedTzo : null
        };
    }
    function pluckDateProps(raw, leftovers) {
        var props = refineProps(raw, DATE_PROPS, {}, leftovers);
        props.start = (props.start !== null) ? props.start : props.date;
        delete props.date;
        return props;
    }
    function pluckNonDateProps(raw, calendar, leftovers) {
        var preLeftovers = {};
        var props = refineProps(raw, NON_DATE_PROPS, {}, preLeftovers);
        var ui = processUnscopedUiProps(preLeftovers, calendar, leftovers);
        props.publicId = props.id;
        delete props.id;
        props.ui = ui;
        return props;
    }
    function computeIsAllDayDefault(sourceId, calendar) {
        var res = null;
        if (sourceId) {
            var source = calendar.state.eventSources[sourceId];
            res = source.allDayDefault;
        }
        if (res == null) {
            res = calendar.opt('allDayDefault');
        }
        return res;
    }

    var DEF_DEFAULTS = {
        startTime: '09:00',
        endTime: '17:00',
        daysOfWeek: [1, 2, 3, 4, 5],
        rendering: 'inverse-background',
        classNames: 'fc-nonbusiness',
        groupId: '_businessHours' // so multiple defs get grouped
    };
    /*
    TODO: pass around as EventDefHash!!!
    */
    function parseBusinessHours(input, calendar) {
        return parseEvents(refineInputs(input), '', calendar);
    }
    function refineInputs(input) {
        var rawDefs;
        if (input === true) {
            rawDefs = [{}]; // will get DEF_DEFAULTS verbatim
        }
        else if (Array.isArray(input)) {
            // if specifying an array, every sub-definition NEEDS a day-of-week
            rawDefs = input.filter(function (rawDef) {
                return rawDef.daysOfWeek;
            });
        }
        else if (typeof input === 'object' && input) { // non-null object
            rawDefs = [input];
        }
        else { // is probably false
            rawDefs = [];
        }
        rawDefs = rawDefs.map(function (rawDef) {
            return __assign({}, DEF_DEFAULTS, rawDef);
        });
        return rawDefs;
    }

    function memoizeRendering(renderFunc, unrenderFunc, dependencies) {
        if (dependencies === void 0) { dependencies = []; }
        var dependents = [];
        var thisContext;
        var prevArgs;
        function unrender() {
            if (prevArgs) {
                for (var _i = 0, dependents_1 = dependents; _i < dependents_1.length; _i++) {
                    var dependent = dependents_1[_i];
                    dependent.unrender();
                }
                if (unrenderFunc) {
                    unrenderFunc.apply(thisContext, prevArgs);
                }
                prevArgs = null;
            }
        }
        function res() {
            if (!prevArgs || !isArraysEqual(prevArgs, arguments)) {
                unrender();
                thisContext = this;
                prevArgs = arguments;
                renderFunc.apply(this, arguments);
            }
        }
        res.dependents = dependents;
        res.unrender = unrender;
        for (var _i = 0, dependencies_1 = dependencies; _i < dependencies_1.length; _i++) {
            var dependency = dependencies_1[_i];
            dependency.dependents.push(res);
        }
        return res;
    }

    var EMPTY_EVENT_STORE = createEmptyEventStore(); // for purecomponents. TODO: keep elsewhere
    var Splitter = /** @class */ (function () {
        function Splitter() {
            this.getKeysForEventDefs = memoize(this._getKeysForEventDefs);
            this.splitDateSelection = memoize(this._splitDateSpan);
            this.splitEventStore = memoize(this._splitEventStore);
            this.splitIndividualUi = memoize(this._splitIndividualUi);
            this.splitEventDrag = memoize(this._splitInteraction);
            this.splitEventResize = memoize(this._splitInteraction);
            this.eventUiBuilders = {}; // TODO: typescript protection
        }
        Splitter.prototype.splitProps = function (props) {
            var _this = this;
            var keyInfos = this.getKeyInfo(props);
            var defKeys = this.getKeysForEventDefs(props.eventStore);
            var dateSelections = this.splitDateSelection(props.dateSelection);
            var individualUi = this.splitIndividualUi(props.eventUiBases, defKeys); // the individual *bases*
            var eventStores = this.splitEventStore(props.eventStore, defKeys);
            var eventDrags = this.splitEventDrag(props.eventDrag);
            var eventResizes = this.splitEventResize(props.eventResize);
            var splitProps = {};
            this.eventUiBuilders = mapHash(keyInfos, function (info, key) {
                return _this.eventUiBuilders[key] || memoize(buildEventUiForKey);
            });
            for (var key in keyInfos) {
                var keyInfo = keyInfos[key];
                var eventStore = eventStores[key] || EMPTY_EVENT_STORE;
                var buildEventUi = this.eventUiBuilders[key];
                splitProps[key] = {
                    businessHours: keyInfo.businessHours || props.businessHours,
                    dateSelection: dateSelections[key] || null,
                    eventStore: eventStore,
                    eventUiBases: buildEventUi(props.eventUiBases[''], keyInfo.ui, individualUi[key]),
                    eventSelection: eventStore.instances[props.eventSelection] ? props.eventSelection : '',
                    eventDrag: eventDrags[key] || null,
                    eventResize: eventResizes[key] || null
                };
            }
            return splitProps;
        };
        Splitter.prototype._splitDateSpan = function (dateSpan) {
            var dateSpans = {};
            if (dateSpan) {
                var keys = this.getKeysForDateSpan(dateSpan);
                for (var _i = 0, keys_1 = keys; _i < keys_1.length; _i++) {
                    var key = keys_1[_i];
                    dateSpans[key] = dateSpan;
                }
            }
            return dateSpans;
        };
        Splitter.prototype._getKeysForEventDefs = function (eventStore) {
            var _this = this;
            return mapHash(eventStore.defs, function (eventDef) {
                return _this.getKeysForEventDef(eventDef);
            });
        };
        Splitter.prototype._splitEventStore = function (eventStore, defKeys) {
            var defs = eventStore.defs, instances = eventStore.instances;
            var splitStores = {};
            for (var defId in defs) {
                for (var _i = 0, _a = defKeys[defId]; _i < _a.length; _i++) {
                    var key = _a[_i];
                    if (!splitStores[key]) {
                        splitStores[key] = createEmptyEventStore();
                    }
                    splitStores[key].defs[defId] = defs[defId];
                }
            }
            for (var instanceId in instances) {
                var instance = instances[instanceId];
                for (var _b = 0, _c = defKeys[instance.defId]; _b < _c.length; _b++) {
                    var key = _c[_b];
                    if (splitStores[key]) { // must have already been created
                        splitStores[key].instances[instanceId] = instance;
                    }
                }
            }
            return splitStores;
        };
        Splitter.prototype._splitIndividualUi = function (eventUiBases, defKeys) {
            var splitHashes = {};
            for (var defId in eventUiBases) {
                if (defId) { // not the '' key
                    for (var _i = 0, _a = defKeys[defId]; _i < _a.length; _i++) {
                        var key = _a[_i];
                        if (!splitHashes[key]) {
                            splitHashes[key] = {};
                        }
                        splitHashes[key][defId] = eventUiBases[defId];
                    }
                }
            }
            return splitHashes;
        };
        Splitter.prototype._splitInteraction = function (interaction) {
            var splitStates = {};
            if (interaction) {
                var affectedStores_1 = this._splitEventStore(interaction.affectedEvents, this._getKeysForEventDefs(interaction.affectedEvents) // can't use cached. might be events from other calendar
                );
                // can't rely on defKeys because event data is mutated
                var mutatedKeysByDefId = this._getKeysForEventDefs(interaction.mutatedEvents);
                var mutatedStores_1 = this._splitEventStore(interaction.mutatedEvents, mutatedKeysByDefId);
                var populate = function (key) {
                    if (!splitStates[key]) {
                        splitStates[key] = {
                            affectedEvents: affectedStores_1[key] || EMPTY_EVENT_STORE,
                            mutatedEvents: mutatedStores_1[key] || EMPTY_EVENT_STORE,
                            isEvent: interaction.isEvent,
                            origSeg: interaction.origSeg
                        };
                    }
                };
                for (var key in affectedStores_1) {
                    populate(key);
                }
                for (var key in mutatedStores_1) {
                    populate(key);
                }
            }
            return splitStates;
        };
        return Splitter;
    }());
    function buildEventUiForKey(allUi, eventUiForKey, individualUi) {
        var baseParts = [];
        if (allUi) {
            baseParts.push(allUi);
        }
        if (eventUiForKey) {
            baseParts.push(eventUiForKey);
        }
        var stuff = {
            '': combineEventUis(baseParts)
        };
        if (individualUi) {
            __assign(stuff, individualUi);
        }
        return stuff;
    }

    // Generates HTML for an anchor to another view into the calendar.
    // Will either generate an <a> tag or a non-clickable <span> tag, depending on enabled settings.
    // `gotoOptions` can either be a DateMarker, or an object with the form:
    // { date, type, forceOff }
    // `type` is a view-type like "day" or "week". default value is "day".
    // `attrs` and `innerHtml` are use to generate the rest of the HTML tag.
    function buildGotoAnchorHtml(allOptions, dateEnv, gotoOptions, attrs, innerHtml) {
        var date;
        var type;
        var forceOff;
        var finalOptions;
        if (gotoOptions instanceof Date) {
            date = gotoOptions; // a single date-like input
        }
        else {
            date = gotoOptions.date;
            type = gotoOptions.type;
            forceOff = gotoOptions.forceOff;
        }
        finalOptions = {
            date: dateEnv.formatIso(date, { omitTime: true }),
            type: type || 'day'
        };
        if (typeof attrs === 'string') {
            innerHtml = attrs;
            attrs = null;
        }
        attrs = attrs ? ' ' + attrsToStr(attrs) : ''; // will have a leading space
        innerHtml = innerHtml || '';
        if (!forceOff && allOptions.navLinks) {
            return '<a' + attrs +
                ' data-goto="' + htmlEscape(JSON.stringify(finalOptions)) + '">' +
                innerHtml +
                '</a>';
        }
        else {
            return '<span' + attrs + '>' +
                innerHtml +
                '</span>';
        }
    }
    function getAllDayHtml(allOptions) {
        return allOptions.allDayHtml || htmlEscape(allOptions.allDayText);
    }
    // Computes HTML classNames for a single-day element
    function getDayClasses(date, dateProfile, context, noThemeHighlight) {
        var calendar = context.calendar, options = context.options, theme = context.theme, dateEnv = context.dateEnv;
        var classes = [];
        var todayStart;
        var todayEnd;
        if (!rangeContainsMarker(dateProfile.activeRange, date)) {
            classes.push('fc-disabled-day');
        }
        else {
            classes.push('fc-' + DAY_IDS[date.getUTCDay()]);
            if (options.monthMode &&
                dateEnv.getMonth(date) !== dateEnv.getMonth(dateProfile.currentRange.start)) {
                classes.push('fc-other-month');
            }
            todayStart = startOfDay(calendar.getNow());
            todayEnd = addDays(todayStart, 1);
            if (date < todayStart) {
                classes.push('fc-past');
            }
            else if (date >= todayEnd) {
                classes.push('fc-future');
            }
            else {
                classes.push('fc-today');
                if (noThemeHighlight !== true) {
                    classes.push(theme.getClass('today'));
                }
            }
        }
        return classes;
    }

    // given a function that resolves a result asynchronously.
    // the function can either call passed-in success and failure callbacks,
    // or it can return a promise.
    // if you need to pass additional params to func, bind them first.
    function unpromisify(func, success, failure) {
        // guard against success/failure callbacks being called more than once
        // and guard against a promise AND callback being used together.
        var isResolved = false;
        var wrappedSuccess = function () {
            if (!isResolved) {
                isResolved = true;
                success.apply(this, arguments);
            }
        };
        var wrappedFailure = function () {
            if (!isResolved) {
                isResolved = true;
                if (failure) {
                    failure.apply(this, arguments);
                }
            }
        };
        var res = func(wrappedSuccess, wrappedFailure);
        if (res && typeof res.then === 'function') {
            res.then(wrappedSuccess, wrappedFailure);
        }
    }

    var Mixin = /** @class */ (function () {
        function Mixin() {
        }
        // mix into a CLASS
        Mixin.mixInto = function (destClass) {
            this.mixIntoObj(destClass.prototype);
        };
        // mix into ANY object
        Mixin.mixIntoObj = function (destObj) {
            var _this = this;
            Object.getOwnPropertyNames(this.prototype).forEach(function (name) {
                if (!destObj[name]) { // if destination doesn't already define it
                    destObj[name] = _this.prototype[name];
                }
            });
        };
        /*
        will override existing methods
        TODO: remove! not used anymore
        */
        Mixin.mixOver = function (destClass) {
            var _this = this;
            Object.getOwnPropertyNames(this.prototype).forEach(function (name) {
                destClass.prototype[name] = _this.prototype[name];
            });
        };
        return Mixin;
    }());

    /*
    USAGE:
      import { default as EmitterMixin, EmitterInterface } from './EmitterMixin'
    in class:
      on: EmitterInterface['on']
      one: EmitterInterface['one']
      off: EmitterInterface['off']
      trigger: EmitterInterface['trigger']
      triggerWith: EmitterInterface['triggerWith']
      hasHandlers: EmitterInterface['hasHandlers']
    after class:
      EmitterMixin.mixInto(TheClass)
    */
    var EmitterMixin = /** @class */ (function (_super) {
        __extends(EmitterMixin, _super);
        function EmitterMixin() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        EmitterMixin.prototype.on = function (type, handler) {
            addToHash(this._handlers || (this._handlers = {}), type, handler);
            return this; // for chaining
        };
        // todo: add comments
        EmitterMixin.prototype.one = function (type, handler) {
            addToHash(this._oneHandlers || (this._oneHandlers = {}), type, handler);
            return this; // for chaining
        };
        EmitterMixin.prototype.off = function (type, handler) {
            if (this._handlers) {
                removeFromHash(this._handlers, type, handler);
            }
            if (this._oneHandlers) {
                removeFromHash(this._oneHandlers, type, handler);
            }
            return this; // for chaining
        };
        EmitterMixin.prototype.trigger = function (type) {
            var args = [];
            for (var _i = 1; _i < arguments.length; _i++) {
                args[_i - 1] = arguments[_i];
            }
            this.triggerWith(type, this, args);
            return this; // for chaining
        };
        EmitterMixin.prototype.triggerWith = function (type, context, args) {
            if (this._handlers) {
                applyAll(this._handlers[type], context, args);
            }
            if (this._oneHandlers) {
                applyAll(this._oneHandlers[type], context, args);
                delete this._oneHandlers[type]; // will never fire again
            }
            return this; // for chaining
        };
        EmitterMixin.prototype.hasHandlers = function (type) {
            return (this._handlers && this._handlers[type] && this._handlers[type].length) ||
                (this._oneHandlers && this._oneHandlers[type] && this._oneHandlers[type].length);
        };
        return EmitterMixin;
    }(Mixin));
    function addToHash(hash, type, handler) {
        (hash[type] || (hash[type] = []))
            .push(handler);
    }
    function removeFromHash(hash, type, handler) {
        if (handler) {
            if (hash[type]) {
                hash[type] = hash[type].filter(function (func) {
                    return func !== handler;
                });
            }
        }
        else {
            delete hash[type]; // remove all handler funcs for this type
        }
    }

    /*
    Records offset information for a set of elements, relative to an origin element.
    Can record the left/right OR the top/bottom OR both.
    Provides methods for querying the cache by position.
    */
    var PositionCache = /** @class */ (function () {
        function PositionCache(originEl, els, isHorizontal, isVertical) {
            this.originEl = originEl;
            this.els = els;
            this.isHorizontal = isHorizontal;
            this.isVertical = isVertical;
        }
        // Queries the els for coordinates and stores them.
        // Call this method before using and of the get* methods below.
        PositionCache.prototype.build = function () {
            var originEl = this.originEl;
            var originClientRect = this.originClientRect =
                originEl.getBoundingClientRect(); // relative to viewport top-left
            if (this.isHorizontal) {
                this.buildElHorizontals(originClientRect.left);
            }
            if (this.isVertical) {
                this.buildElVerticals(originClientRect.top);
            }
        };
        // Populates the left/right internal coordinate arrays
        PositionCache.prototype.buildElHorizontals = function (originClientLeft) {
            var lefts = [];
            var rights = [];
            for (var _i = 0, _a = this.els; _i < _a.length; _i++) {
                var el = _a[_i];
                var rect = el.getBoundingClientRect();
                lefts.push(rect.left - originClientLeft);
                rights.push(rect.right - originClientLeft);
            }
            this.lefts = lefts;
            this.rights = rights;
        };
        // Populates the top/bottom internal coordinate arrays
        PositionCache.prototype.buildElVerticals = function (originClientTop) {
            var tops = [];
            var bottoms = [];
            for (var _i = 0, _a = this.els; _i < _a.length; _i++) {
                var el = _a[_i];
                var rect = el.getBoundingClientRect();
                tops.push(rect.top - originClientTop);
                bottoms.push(rect.bottom - originClientTop);
            }
            this.tops = tops;
            this.bottoms = bottoms;
        };
        // Given a left offset (from document left), returns the index of the el that it horizontally intersects.
        // If no intersection is made, returns undefined.
        PositionCache.prototype.leftToIndex = function (leftPosition) {
            var lefts = this.lefts;
            var rights = this.rights;
            var len = lefts.length;
            var i;
            for (i = 0; i < len; i++) {
                if (leftPosition >= lefts[i] && leftPosition < rights[i]) {
                    return i;
                }
            }
        };
        // Given a top offset (from document top), returns the index of the el that it vertically intersects.
        // If no intersection is made, returns undefined.
        PositionCache.prototype.topToIndex = function (topPosition) {
            var tops = this.tops;
            var bottoms = this.bottoms;
            var len = tops.length;
            var i;
            for (i = 0; i < len; i++) {
                if (topPosition >= tops[i] && topPosition < bottoms[i]) {
                    return i;
                }
            }
        };
        // Gets the width of the element at the given index
        PositionCache.prototype.getWidth = function (leftIndex) {
            return this.rights[leftIndex] - this.lefts[leftIndex];
        };
        // Gets the height of the element at the given index
        PositionCache.prototype.getHeight = function (topIndex) {
            return this.bottoms[topIndex] - this.tops[topIndex];
        };
        return PositionCache;
    }());

    /*
    An object for getting/setting scroll-related information for an element.
    Internally, this is done very differently for window versus DOM element,
    so this object serves as a common interface.
    */
    var ScrollController = /** @class */ (function () {
        function ScrollController() {
        }
        ScrollController.prototype.getMaxScrollTop = function () {
            return this.getScrollHeight() - this.getClientHeight();
        };
        ScrollController.prototype.getMaxScrollLeft = function () {
            return this.getScrollWidth() - this.getClientWidth();
        };
        ScrollController.prototype.canScrollVertically = function () {
            return this.getMaxScrollTop() > 0;
        };
        ScrollController.prototype.canScrollHorizontally = function () {
            return this.getMaxScrollLeft() > 0;
        };
        ScrollController.prototype.canScrollUp = function () {
            return this.getScrollTop() > 0;
        };
        ScrollController.prototype.canScrollDown = function () {
            return this.getScrollTop() < this.getMaxScrollTop();
        };
        ScrollController.prototype.canScrollLeft = function () {
            return this.getScrollLeft() > 0;
        };
        ScrollController.prototype.canScrollRight = function () {
            return this.getScrollLeft() < this.getMaxScrollLeft();
        };
        return ScrollController;
    }());
    var ElementScrollController = /** @class */ (function (_super) {
        __extends(ElementScrollController, _super);
        function ElementScrollController(el) {
            var _this = _super.call(this) || this;
            _this.el = el;
            return _this;
        }
        ElementScrollController.prototype.getScrollTop = function () {
            return this.el.scrollTop;
        };
        ElementScrollController.prototype.getScrollLeft = function () {
            return this.el.scrollLeft;
        };
        ElementScrollController.prototype.setScrollTop = function (top) {
            this.el.scrollTop = top;
        };
        ElementScrollController.prototype.setScrollLeft = function (left) {
            this.el.scrollLeft = left;
        };
        ElementScrollController.prototype.getScrollWidth = function () {
            return this.el.scrollWidth;
        };
        ElementScrollController.prototype.getScrollHeight = function () {
            return this.el.scrollHeight;
        };
        ElementScrollController.prototype.getClientHeight = function () {
            return this.el.clientHeight;
        };
        ElementScrollController.prototype.getClientWidth = function () {
            return this.el.clientWidth;
        };
        return ElementScrollController;
    }(ScrollController));
    var WindowScrollController = /** @class */ (function (_super) {
        __extends(WindowScrollController, _super);
        function WindowScrollController() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        WindowScrollController.prototype.getScrollTop = function () {
            return window.pageYOffset;
        };
        WindowScrollController.prototype.getScrollLeft = function () {
            return window.pageXOffset;
        };
        WindowScrollController.prototype.setScrollTop = function (n) {
            window.scroll(window.pageXOffset, n);
        };
        WindowScrollController.prototype.setScrollLeft = function (n) {
            window.scroll(n, window.pageYOffset);
        };
        WindowScrollController.prototype.getScrollWidth = function () {
            return document.documentElement.scrollWidth;
        };
        WindowScrollController.prototype.getScrollHeight = function () {
            return document.documentElement.scrollHeight;
        };
        WindowScrollController.prototype.getClientHeight = function () {
            return document.documentElement.clientHeight;
        };
        WindowScrollController.prototype.getClientWidth = function () {
            return document.documentElement.clientWidth;
        };
        return WindowScrollController;
    }(ScrollController));

    /*
    Embodies a div that has potential scrollbars
    */
    var ScrollComponent = /** @class */ (function (_super) {
        __extends(ScrollComponent, _super);
        function ScrollComponent(overflowX, overflowY) {
            var _this = _super.call(this, createElement('div', {
                className: 'fc-scroller'
            })) || this;
            _this.overflowX = overflowX;
            _this.overflowY = overflowY;
            _this.applyOverflow();
            return _this;
        }
        // sets to natural height, unlocks overflow
        ScrollComponent.prototype.clear = function () {
            this.setHeight('auto');
            this.applyOverflow();
        };
        ScrollComponent.prototype.destroy = function () {
            removeElement(this.el);
        };
        // Overflow
        // -----------------------------------------------------------------------------------------------------------------
        ScrollComponent.prototype.applyOverflow = function () {
            applyStyle(this.el, {
                overflowX: this.overflowX,
                overflowY: this.overflowY
            });
        };
        // Causes any 'auto' overflow values to resolves to 'scroll' or 'hidden'.
        // Useful for preserving scrollbar widths regardless of future resizes.
        // Can pass in scrollbarWidths for optimization.
        ScrollComponent.prototype.lockOverflow = function (scrollbarWidths) {
            var overflowX = this.overflowX;
            var overflowY = this.overflowY;
            scrollbarWidths = scrollbarWidths || this.getScrollbarWidths();
            if (overflowX === 'auto') {
                overflowX = (scrollbarWidths.bottom || // horizontal scrollbars?
                    this.canScrollHorizontally() // OR scrolling pane with massless scrollbars?
                ) ? 'scroll' : 'hidden';
            }
            if (overflowY === 'auto') {
                overflowY = (scrollbarWidths.left || scrollbarWidths.right || // horizontal scrollbars?
                    this.canScrollVertically() // OR scrolling pane with massless scrollbars?
                ) ? 'scroll' : 'hidden';
            }
            applyStyle(this.el, { overflowX: overflowX, overflowY: overflowY });
        };
        ScrollComponent.prototype.setHeight = function (height) {
            applyStyleProp(this.el, 'height', height);
        };
        ScrollComponent.prototype.getScrollbarWidths = function () {
            var edges = computeEdges(this.el);
            return {
                left: edges.scrollbarLeft,
                right: edges.scrollbarRight,
                bottom: edges.scrollbarBottom
            };
        };
        return ScrollComponent;
    }(ElementScrollController));

    var Theme = /** @class */ (function () {
        function Theme(calendarOptions) {
            this.calendarOptions = calendarOptions;
            this.processIconOverride();
        }
        Theme.prototype.processIconOverride = function () {
            if (this.iconOverrideOption) {
                this.setIconOverride(this.calendarOptions[this.iconOverrideOption]);
            }
        };
        Theme.prototype.setIconOverride = function (iconOverrideHash) {
            var iconClassesCopy;
            var buttonName;
            if (typeof iconOverrideHash === 'object' && iconOverrideHash) { // non-null object
                iconClassesCopy = __assign({}, this.iconClasses);
                for (buttonName in iconOverrideHash) {
                    iconClassesCopy[buttonName] = this.applyIconOverridePrefix(iconOverrideHash[buttonName]);
                }
                this.iconClasses = iconClassesCopy;
            }
            else if (iconOverrideHash === false) {
                this.iconClasses = {};
            }
        };
        Theme.prototype.applyIconOverridePrefix = function (className) {
            var prefix = this.iconOverridePrefix;
            if (prefix && className.indexOf(prefix) !== 0) { // if not already present
                className = prefix + className;
            }
            return className;
        };
        Theme.prototype.getClass = function (key) {
            return this.classes[key] || '';
        };
        Theme.prototype.getIconClass = function (buttonName) {
            var className = this.iconClasses[buttonName];
            if (className) {
                return this.baseIconClass + ' ' + className;
            }
            return '';
        };
        Theme.prototype.getCustomButtonIconClass = function (customButtonProps) {
            var className;
            if (this.iconOverrideCustomButtonOption) {
                className = customButtonProps[this.iconOverrideCustomButtonOption];
                if (className) {
                    return this.baseIconClass + ' ' + this.applyIconOverridePrefix(className);
                }
            }
            return '';
        };
        return Theme;
    }());
    Theme.prototype.classes = {};
    Theme.prototype.iconClasses = {};
    Theme.prototype.baseIconClass = '';
    Theme.prototype.iconOverridePrefix = '';

    var guid = 0;
    var ComponentContext = /** @class */ (function () {
        function ComponentContext(calendar, theme, dateEnv, options, view) {
            this.calendar = calendar;
            this.theme = theme;
            this.dateEnv = dateEnv;
            this.options = options;
            this.view = view;
            this.isRtl = options.dir === 'rtl';
            this.eventOrderSpecs = parseFieldSpecs(options.eventOrder);
            this.nextDayThreshold = createDuration(options.nextDayThreshold);
        }
        ComponentContext.prototype.extend = function (options, view) {
            return new ComponentContext(this.calendar, this.theme, this.dateEnv, options || this.options, view || this.view);
        };
        return ComponentContext;
    }());
    var Component = /** @class */ (function () {
        function Component() {
            this.uid = String(guid++);
        }
        Component.addEqualityFuncs = function (newFuncs) {
            this.prototype.equalityFuncs = __assign({}, this.prototype.equalityFuncs, newFuncs);
        };
        Component.prototype.receiveProps = function (props, context) {
            var oldContext = this.context;
            this.context = context;
            if (!oldContext) {
                this.firstContext(context);
            }
            var _a = recycleProps(this.props || {}, props, this.equalityFuncs), anyChanges = _a.anyChanges, comboProps = _a.comboProps;
            this.props = comboProps;
            if (anyChanges) {
                if (oldContext) {
                    this.beforeUpdate();
                }
                this.render(comboProps, context);
                if (oldContext) {
                    this.afterUpdate();
                }
            }
        };
        Component.prototype.render = function (props, context) {
        };
        Component.prototype.firstContext = function (context) {
        };
        Component.prototype.beforeUpdate = function () {
        };
        Component.prototype.afterUpdate = function () {
        };
        // after destroy is called, this component won't ever be used again
        Component.prototype.destroy = function () {
        };
        return Component;
    }());
    Component.prototype.equalityFuncs = {};
    /*
    Reuses old values when equal. If anything is unequal, returns newProps as-is.
    Great for PureComponent, but won't be feasible with React, so just eliminate and use React's DOM diffing.
    */
    function recycleProps(oldProps, newProps, equalityFuncs) {
        var comboProps = {}; // some old, some new
        var anyChanges = false;
        for (var key in newProps) {
            if (key in oldProps && (oldProps[key] === newProps[key] ||
                (equalityFuncs[key] && equalityFuncs[key](oldProps[key], newProps[key])))) {
                // equal to old? use old prop
                comboProps[key] = oldProps[key];
            }
            else {
                comboProps[key] = newProps[key];
                anyChanges = true;
            }
        }
        for (var key in oldProps) {
            if (!(key in newProps)) {
                anyChanges = true;
                break;
            }
        }
        return { anyChanges: anyChanges, comboProps: comboProps };
    }

    /*
    PURPOSES:
    - hook up to fg, fill, and mirror renderers
    - interface for dragging and hits
    */
    var DateComponent = /** @class */ (function (_super) {
        __extends(DateComponent, _super);
        function DateComponent(el) {
            var _this = _super.call(this) || this;
            _this.el = el;
            return _this;
        }
        DateComponent.prototype.destroy = function () {
            _super.prototype.destroy.call(this);
            removeElement(this.el);
        };
        // Hit System
        // -----------------------------------------------------------------------------------------------------------------
        DateComponent.prototype.buildPositionCaches = function () {
        };
        DateComponent.prototype.queryHit = function (positionLeft, positionTop, elWidth, elHeight) {
            return null; // this should be abstract
        };
        // Validation
        // -----------------------------------------------------------------------------------------------------------------
        DateComponent.prototype.isInteractionValid = function (interaction) {
            var calendar = this.context.calendar;
            var dateProfile = this.props.dateProfile; // HACK
            var instances = interaction.mutatedEvents.instances;
            if (dateProfile) { // HACK for DayTile
                for (var instanceId in instances) {
                    if (!rangeContainsRange(dateProfile.validRange, instances[instanceId].range)) {
                        return false;
                    }
                }
            }
            return isInteractionValid(interaction, calendar);
        };
        DateComponent.prototype.isDateSelectionValid = function (selection) {
            var calendar = this.context.calendar;
            var dateProfile = this.props.dateProfile; // HACK
            if (dateProfile && // HACK for DayTile
                !rangeContainsRange(dateProfile.validRange, selection.range)) {
                return false;
            }
            return isDateSelectionValid(selection, calendar);
        };
        // Pointer Interaction Utils
        // -----------------------------------------------------------------------------------------------------------------
        DateComponent.prototype.isValidSegDownEl = function (el) {
            return !this.props.eventDrag && // HACK
                !this.props.eventResize && // HACK
                !elementClosest(el, '.fc-mirror') &&
                (this.isPopover() || !this.isInPopover(el));
            // ^above line ensures we don't detect a seg interaction within a nested component.
            // it's a HACK because it only supports a popover as the nested component.
        };
        DateComponent.prototype.isValidDateDownEl = function (el) {
            var segEl = elementClosest(el, this.fgSegSelector);
            return (!segEl || segEl.classList.contains('fc-mirror')) &&
                !elementClosest(el, '.fc-more') && // a "more.." link
                !elementClosest(el, 'a[data-goto]') && // a clickable nav link
                !this.isInPopover(el);
        };
        DateComponent.prototype.isPopover = function () {
            return this.el.classList.contains('fc-popover');
        };
        DateComponent.prototype.isInPopover = function (el) {
            return Boolean(elementClosest(el, '.fc-popover'));
        };
        return DateComponent;
    }(Component));
    DateComponent.prototype.fgSegSelector = '.fc-event-container > *';
    DateComponent.prototype.bgSegSelector = '.fc-bgevent:not(.fc-nonbusiness)';

    var uid$1 = 0;
    function createPlugin(input) {
        return {
            id: String(uid$1++),
            deps: input.deps || [],
            reducers: input.reducers || [],
            eventDefParsers: input.eventDefParsers || [],
            isDraggableTransformers: input.isDraggableTransformers || [],
            eventDragMutationMassagers: input.eventDragMutationMassagers || [],
            eventDefMutationAppliers: input.eventDefMutationAppliers || [],
            dateSelectionTransformers: input.dateSelectionTransformers || [],
            datePointTransforms: input.datePointTransforms || [],
            dateSpanTransforms: input.dateSpanTransforms || [],
            views: input.views || {},
            viewPropsTransformers: input.viewPropsTransformers || [],
            isPropsValid: input.isPropsValid || null,
            externalDefTransforms: input.externalDefTransforms || [],
            eventResizeJoinTransforms: input.eventResizeJoinTransforms || [],
            viewContainerModifiers: input.viewContainerModifiers || [],
            eventDropTransformers: input.eventDropTransformers || [],
            componentInteractions: input.componentInteractions || [],
            calendarInteractions: input.calendarInteractions || [],
            themeClasses: input.themeClasses || {},
            eventSourceDefs: input.eventSourceDefs || [],
            cmdFormatter: input.cmdFormatter,
            recurringTypes: input.recurringTypes || [],
            namedTimeZonedImpl: input.namedTimeZonedImpl,
            defaultView: input.defaultView || '',
            elementDraggingImpl: input.elementDraggingImpl,
            optionChangeHandlers: input.optionChangeHandlers || {}
        };
    }
    var PluginSystem = /** @class */ (function () {
        function PluginSystem() {
            this.hooks = {
                reducers: [],
                eventDefParsers: [],
                isDraggableTransformers: [],
                eventDragMutationMassagers: [],
                eventDefMutationAppliers: [],
                dateSelectionTransformers: [],
                datePointTransforms: [],
                dateSpanTransforms: [],
                views: {},
                viewPropsTransformers: [],
                isPropsValid: null,
                externalDefTransforms: [],
                eventResizeJoinTransforms: [],
                viewContainerModifiers: [],
                eventDropTransformers: [],
                componentInteractions: [],
                calendarInteractions: [],
                themeClasses: {},
                eventSourceDefs: [],
                cmdFormatter: null,
                recurringTypes: [],
                namedTimeZonedImpl: null,
                defaultView: '',
                elementDraggingImpl: null,
                optionChangeHandlers: {}
            };
            this.addedHash = {};
        }
        PluginSystem.prototype.add = function (plugin) {
            if (!this.addedHash[plugin.id]) {
                this.addedHash[plugin.id] = true;
                for (var _i = 0, _a = plugin.deps; _i < _a.length; _i++) {
                    var dep = _a[_i];
                    this.add(dep);
                }
                this.hooks = combineHooks(this.hooks, plugin);
            }
        };
        return PluginSystem;
    }());
    function combineHooks(hooks0, hooks1) {
        return {
            reducers: hooks0.reducers.concat(hooks1.reducers),
            eventDefParsers: hooks0.eventDefParsers.concat(hooks1.eventDefParsers),
            isDraggableTransformers: hooks0.isDraggableTransformers.concat(hooks1.isDraggableTransformers),
            eventDragMutationMassagers: hooks0.eventDragMutationMassagers.concat(hooks1.eventDragMutationMassagers),
            eventDefMutationAppliers: hooks0.eventDefMutationAppliers.concat(hooks1.eventDefMutationAppliers),
            dateSelectionTransformers: hooks0.dateSelectionTransformers.concat(hooks1.dateSelectionTransformers),
            datePointTransforms: hooks0.datePointTransforms.concat(hooks1.datePointTransforms),
            dateSpanTransforms: hooks0.dateSpanTransforms.concat(hooks1.dateSpanTransforms),
            views: __assign({}, hooks0.views, hooks1.views),
            viewPropsTransformers: hooks0.viewPropsTransformers.concat(hooks1.viewPropsTransformers),
            isPropsValid: hooks1.isPropsValid || hooks0.isPropsValid,
            externalDefTransforms: hooks0.externalDefTransforms.concat(hooks1.externalDefTransforms),
            eventResizeJoinTransforms: hooks0.eventResizeJoinTransforms.concat(hooks1.eventResizeJoinTransforms),
            viewContainerModifiers: hooks0.viewContainerModifiers.concat(hooks1.viewContainerModifiers),
            eventDropTransformers: hooks0.eventDropTransformers.concat(hooks1.eventDropTransformers),
            calendarInteractions: hooks0.calendarInteractions.concat(hooks1.calendarInteractions),
            componentInteractions: hooks0.componentInteractions.concat(hooks1.componentInteractions),
            themeClasses: __assign({}, hooks0.themeClasses, hooks1.themeClasses),
            eventSourceDefs: hooks0.eventSourceDefs.concat(hooks1.eventSourceDefs),
            cmdFormatter: hooks1.cmdFormatter || hooks0.cmdFormatter,
            recurringTypes: hooks0.recurringTypes.concat(hooks1.recurringTypes),
            namedTimeZonedImpl: hooks1.namedTimeZonedImpl || hooks0.namedTimeZonedImpl,
            defaultView: hooks0.defaultView || hooks1.defaultView,
            elementDraggingImpl: hooks0.elementDraggingImpl || hooks1.elementDraggingImpl,
            optionChangeHandlers: __assign({}, hooks0.optionChangeHandlers, hooks1.optionChangeHandlers)
        };
    }

    var eventSourceDef = {
        ignoreRange: true,
        parseMeta: function (raw) {
            if (Array.isArray(raw)) { // short form
                return raw;
            }
            else if (Array.isArray(raw.events)) {
                return raw.events;
            }
            return null;
        },
        fetch: function (arg, success) {
            success({
                rawEvents: arg.eventSource.meta
            });
        }
    };
    var ArrayEventSourcePlugin = createPlugin({
        eventSourceDefs: [eventSourceDef]
    });

    var eventSourceDef$1 = {
        parseMeta: function (raw) {
            if (typeof raw === 'function') { // short form
                return raw;
            }
            else if (typeof raw.events === 'function') {
                return raw.events;
            }
            return null;
        },
        fetch: function (arg, success, failure) {
            var dateEnv = arg.calendar.dateEnv;
            var func = arg.eventSource.meta;
            unpromisify(func.bind(null, {
                start: dateEnv.toDate(arg.range.start),
                end: dateEnv.toDate(arg.range.end),
                startStr: dateEnv.formatIso(arg.range.start),
                endStr: dateEnv.formatIso(arg.range.end),
                timeZone: dateEnv.timeZone
            }), function (rawEvents) {
                success({ rawEvents: rawEvents }); // needs an object response
            }, failure // send errorObj directly to failure callback
            );
        }
    };
    var FuncEventSourcePlugin = createPlugin({
        eventSourceDefs: [eventSourceDef$1]
    });

    function requestJson(method, url, params, successCallback, failureCallback) {
        method = method.toUpperCase();
        var body = null;
        if (method === 'GET') {
            url = injectQueryStringParams(url, params);
        }
        else {
            body = encodeParams(params);
        }
        var xhr = new XMLHttpRequest();
        xhr.open(method, url, true);
        if (method !== 'GET') {
            xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        }
        xhr.onload = function () {
            if (xhr.status >= 200 && xhr.status < 400) {
                try {
                    var res = JSON.parse(xhr.responseText);
                    successCallback(res, xhr);
                }
                catch (err) {
                    failureCallback('Failure parsing JSON', xhr);
                }
            }
            else {
                failureCallback('Request failed', xhr);
            }
        };
        xhr.onerror = function () {
            failureCallback('Request failed', xhr);
        };
        xhr.send(body);
    }
    function injectQueryStringParams(url, params) {
        return url +
            (url.indexOf('?') === -1 ? '?' : '&') +
            encodeParams(params);
    }
    function encodeParams(params) {
        var parts = [];
        for (var key in params) {
            parts.push(encodeURIComponent(key) + '=' + encodeURIComponent(params[key]));
        }
        return parts.join('&');
    }

    var eventSourceDef$2 = {
        parseMeta: function (raw) {
            if (typeof raw === 'string') { // short form
                raw = { url: raw };
            }
            else if (!raw || typeof raw !== 'object' || !raw.url) {
                return null;
            }
            return {
                url: raw.url,
                method: (raw.method || 'GET').toUpperCase(),
                extraParams: raw.extraParams,
                startParam: raw.startParam,
                endParam: raw.endParam,
                timeZoneParam: raw.timeZoneParam
            };
        },
        fetch: function (arg, success, failure) {
            var meta = arg.eventSource.meta;
            var requestParams = buildRequestParams(meta, arg.range, arg.calendar);
            requestJson(meta.method, meta.url, requestParams, function (rawEvents, xhr) {
                success({ rawEvents: rawEvents, xhr: xhr });
            }, function (errorMessage, xhr) {
                failure({ message: errorMessage, xhr: xhr });
            });
        }
    };
    var JsonFeedEventSourcePlugin = createPlugin({
        eventSourceDefs: [eventSourceDef$2]
    });
    function buildRequestParams(meta, range, calendar) {
        var dateEnv = calendar.dateEnv;
        var startParam;
        var endParam;
        var timeZoneParam;
        var customRequestParams;
        var params = {};
        startParam = meta.startParam;
        if (startParam == null) {
            startParam = calendar.opt('startParam');
        }
        endParam = meta.endParam;
        if (endParam == null) {
            endParam = calendar.opt('endParam');
        }
        timeZoneParam = meta.timeZoneParam;
        if (timeZoneParam == null) {
            timeZoneParam = calendar.opt('timeZoneParam');
        }
        // retrieve any outbound GET/POST data from the options
        if (typeof meta.extraParams === 'function') {
            // supplied as a function that returns a key/value object
            customRequestParams = meta.extraParams();
        }
        else {
            // probably supplied as a straight key/value object
            customRequestParams = meta.extraParams || {};
        }
        __assign(params, customRequestParams);
        params[startParam] = dateEnv.formatIso(range.start);
        params[endParam] = dateEnv.formatIso(range.end);
        if (dateEnv.timeZone !== 'local') {
            params[timeZoneParam] = dateEnv.timeZone;
        }
        return params;
    }

    var recurring = {
        parse: function (rawEvent, leftoverProps, dateEnv) {
            var createMarker = dateEnv.createMarker.bind(dateEnv);
            var processors = {
                daysOfWeek: null,
                startTime: createDuration,
                endTime: createDuration,
                startRecur: createMarker,
                endRecur: createMarker
            };
            var props = refineProps(rawEvent, processors, {}, leftoverProps);
            var anyValid = false;
            for (var propName in props) {
                if (props[propName] != null) {
                    anyValid = true;
                    break;
                }
            }
            if (anyValid) {
                var duration = null;
                if ('duration' in leftoverProps) {
                    duration = createDuration(leftoverProps.duration);
                    delete leftoverProps.duration;
                }
                if (!duration && props.startTime && props.endTime) {
                    duration = subtractDurations(props.endTime, props.startTime);
                }
                return {
                    allDayGuess: Boolean(!props.startTime && !props.endTime),
                    duration: duration,
                    typeData: props // doesn't need endTime anymore but oh well
                };
            }
            return null;
        },
        expand: function (typeData, framingRange, dateEnv) {
            var clippedFramingRange = intersectRanges(framingRange, { start: typeData.startRecur, end: typeData.endRecur });
            if (clippedFramingRange) {
                return expandRanges(typeData.daysOfWeek, typeData.startTime, clippedFramingRange, dateEnv);
            }
            else {
                return [];
            }
        }
    };
    var SimpleRecurrencePlugin = createPlugin({
        recurringTypes: [recurring]
    });
    function expandRanges(daysOfWeek, startTime, framingRange, dateEnv) {
        var dowHash = daysOfWeek ? arrayToHash(daysOfWeek) : null;
        var dayMarker = startOfDay(framingRange.start);
        var endMarker = framingRange.end;
        var instanceStarts = [];
        while (dayMarker < endMarker) {
            var instanceStart 
            // if everyday, or this particular day-of-week
            = void 0;
            // if everyday, or this particular day-of-week
            if (!dowHash || dowHash[dayMarker.getUTCDay()]) {
                if (startTime) {
                    instanceStart = dateEnv.add(dayMarker, startTime);
                }
                else {
                    instanceStart = dayMarker;
                }
                instanceStarts.push(instanceStart);
            }
            dayMarker = addDays(dayMarker, 1);
        }
        return instanceStarts;
    }

    var DefaultOptionChangeHandlers = createPlugin({
        optionChangeHandlers: {
            events: function (events, calendar, deepEqual) {
                handleEventSources([events], calendar, deepEqual);
            },
            eventSources: handleEventSources,
            plugins: handlePlugins
        }
    });
    function handleEventSources(inputs, calendar, deepEqual) {
        var unfoundSources = hashValuesToArray(calendar.state.eventSources);
        var newInputs = [];
        for (var _i = 0, inputs_1 = inputs; _i < inputs_1.length; _i++) {
            var input = inputs_1[_i];
            var inputFound = false;
            for (var i = 0; i < unfoundSources.length; i++) {
                if (deepEqual(unfoundSources[i]._raw, input)) {
                    unfoundSources.splice(i, 1); // delete
                    inputFound = true;
                    break;
                }
            }
            if (!inputFound) {
                newInputs.push(input);
            }
        }
        for (var _a = 0, unfoundSources_1 = unfoundSources; _a < unfoundSources_1.length; _a++) {
            var unfoundSource = unfoundSources_1[_a];
            calendar.dispatch({
                type: 'REMOVE_EVENT_SOURCE',
                sourceId: unfoundSource.sourceId
            });
        }
        for (var _b = 0, newInputs_1 = newInputs; _b < newInputs_1.length; _b++) {
            var newInput = newInputs_1[_b];
            calendar.addEventSource(newInput);
        }
    }
    // shortcoming: won't remove plugins
    function handlePlugins(inputs, calendar) {
        calendar.addPluginInputs(inputs); // will gracefully handle duplicates
    }

    var config = {}; // TODO: make these options
    var globalDefaults = {
        defaultRangeSeparator: ' - ',
        titleRangeSeparator: ' \u2013 ',
        defaultTimedEventDuration: '01:00:00',
        defaultAllDayEventDuration: { day: 1 },
        forceEventDuration: false,
        nextDayThreshold: '00:00:00',
        // display
        columnHeader: true,
        defaultView: '',
        aspectRatio: 1.35,
        header: {
            left: 'title',
            center: '',
            right: 'today prev,next'
        },
        weekends: true,
        weekNumbers: false,
        weekNumberCalculation: 'local',
        editable: false,
        // nowIndicator: false,
        scrollTime: '06:00:00',
        minTime: '00:00:00',
        maxTime: '24:00:00',
        showNonCurrentDates: true,
        // event ajax
        lazyFetching: true,
        startParam: 'start',
        endParam: 'end',
        timeZoneParam: 'timeZone',
        timeZone: 'local',
        // allDayDefault: undefined,
        // locale
        locales: [],
        locale: '',
        // dir: will get this from the default locale
        // buttonIcons: null,
        // allows setting a min-height to the event segment to prevent short events overlapping each other
        timeGridEventMinHeight: 0,
        themeSystem: 'standard',
        // eventResizableFromStart: false,
        dragRevertDuration: 500,
        dragScroll: true,
        allDayMaintainDuration: false,
        // selectable: false,
        unselectAuto: true,
        // selectMinDistance: 0,
        dropAccept: '*',
        eventOrder: 'start,-duration,allDay,title',
        // ^ if start tie, longer events go before shorter. final tie-breaker is title text
        // rerenderDelay: null,
        eventLimit: false,
        eventLimitClick: 'popover',
        dayPopoverFormat: { month: 'long', day: 'numeric', year: 'numeric' },
        handleWindowResize: true,
        windowResizeDelay: 100,
        longPressDelay: 1000,
        eventDragMinDistance: 5 // only applies to mouse
    };
    var rtlDefaults = {
        header: {
            left: 'next,prev today',
            center: '',
            right: 'title'
        },
        buttonIcons: {
            // TODO: make RTL support the responibility of the theme
            prev: 'fc-icon-chevron-right',
            next: 'fc-icon-chevron-left',
            prevYear: 'fc-icon-chevrons-right',
            nextYear: 'fc-icon-chevrons-left'
        }
    };
    var complexOptions = [
        'header',
        'footer',
        'buttonText',
        'buttonIcons'
    ];
    // Merges an array of option objects into a single object
    function mergeOptions(optionObjs) {
        return mergeProps(optionObjs, complexOptions);
    }
    // TODO: move this stuff to a "plugin"-related file...
    var INTERNAL_PLUGINS = [
        ArrayEventSourcePlugin,
        FuncEventSourcePlugin,
        JsonFeedEventSourcePlugin,
        SimpleRecurrencePlugin,
        DefaultOptionChangeHandlers
    ];
    function refinePluginDefs(pluginInputs) {
        var plugins = [];
        for (var _i = 0, pluginInputs_1 = pluginInputs; _i < pluginInputs_1.length; _i++) {
            var pluginInput = pluginInputs_1[_i];
            if (typeof pluginInput === 'string') {
                var globalName = 'FullCalendar' + capitaliseFirstLetter(pluginInput);
                if (!window[globalName]) {
                    console.warn('Plugin file not loaded for ' + pluginInput);
                }
                else {
                    plugins.push(window[globalName].default); // is an ES6 module
                }
            }
            else {
                plugins.push(pluginInput);
            }
        }
        return INTERNAL_PLUGINS.concat(plugins);
    }

    var RAW_EN_LOCALE = {
        code: 'en',
        week: {
            dow: 0,
            doy: 4 // 4 days need to be within the year to be considered the first week
        },
        dir: 'ltr',
        buttonText: {
            prev: 'prev',
            next: 'next',
            prevYear: 'prev year',
            nextYear: 'next year',
            year: 'year',
            today: 'today',
            month: 'month',
            week: 'week',
            day: 'day',
            list: 'list'
        },
        weekLabel: 'W',
        allDayText: 'all-day',
        eventLimitText: 'more',
        noEventsMessage: 'No events to display'
    };
    function parseRawLocales(explicitRawLocales) {
        var defaultCode = explicitRawLocales.length > 0 ? explicitRawLocales[0].code : 'en';
        var globalArray = window['FullCalendarLocalesAll'] || []; // from locales-all.js
        var globalObject = window['FullCalendarLocales'] || {}; // from locales/*.js. keys are meaningless
        var allRawLocales = globalArray.concat(// globalArray is low prio
        hashValuesToArray(globalObject), // medium prio
        explicitRawLocales // highest prio
        );
        var rawLocaleMap = {
            en: RAW_EN_LOCALE // necessary?
        };
        for (var _i = 0, allRawLocales_1 = allRawLocales; _i < allRawLocales_1.length; _i++) {
            var rawLocale = allRawLocales_1[_i];
            rawLocaleMap[rawLocale.code] = rawLocale;
        }
        return {
            map: rawLocaleMap,
            defaultCode: defaultCode
        };
    }
    function buildLocale(inputSingular, available) {
        if (typeof inputSingular === 'object' && !Array.isArray(inputSingular)) {
            return parseLocale(inputSingular.code, [inputSingular.code], inputSingular);
        }
        else {
            return queryLocale(inputSingular, available);
        }
    }
    function queryLocale(codeArg, available) {
        var codes = [].concat(codeArg || []); // will convert to array
        var raw = queryRawLocale(codes, available) || RAW_EN_LOCALE;
        return parseLocale(codeArg, codes, raw);
    }
    function queryRawLocale(codes, available) {
        for (var i = 0; i < codes.length; i++) {
            var parts = codes[i].toLocaleLowerCase().split('-');
            for (var j = parts.length; j > 0; j--) {
                var simpleId = parts.slice(0, j).join('-');
                if (available[simpleId]) {
                    return available[simpleId];
                }
            }
        }
        return null;
    }
    function parseLocale(codeArg, codes, raw) {
        var merged = mergeProps([RAW_EN_LOCALE, raw], ['buttonText']);
        delete merged.code; // don't want this part of the options
        var week = merged.week;
        delete merged.week;
        return {
            codeArg: codeArg,
            codes: codes,
            week: week,
            simpleNumberFormat: new Intl.NumberFormat(codeArg),
            options: merged
        };
    }

    var OptionsManager = /** @class */ (function () {
        function OptionsManager(overrides) {
            this.overrides = __assign({}, overrides); // make a copy
            this.dynamicOverrides = {};
            this.compute();
        }
        OptionsManager.prototype.mutate = function (updates, removals, isDynamic) {
            if (!Object.keys(updates).length && !removals.length) {
                return;
            }
            var overrideHash = isDynamic ? this.dynamicOverrides : this.overrides;
            __assign(overrideHash, updates);
            for (var _i = 0, removals_1 = removals; _i < removals_1.length; _i++) {
                var propName = removals_1[_i];
                delete overrideHash[propName];
            }
            this.compute();
        };
        // Computes the flattened options hash for the calendar and assigns to `this.options`.
        // Assumes this.overrides and this.dynamicOverrides have already been initialized.
        OptionsManager.prototype.compute = function () {
            // TODO: not a very efficient system
            var locales = firstDefined(// explicit locale option given?
            this.dynamicOverrides.locales, this.overrides.locales, globalDefaults.locales);
            var locale = firstDefined(// explicit locales option given?
            this.dynamicOverrides.locale, this.overrides.locale, globalDefaults.locale);
            var available = parseRawLocales(locales);
            var localeDefaults = buildLocale(locale || available.defaultCode, available.map).options;
            var dir = firstDefined(// based on options computed so far, is direction RTL?
            this.dynamicOverrides.dir, this.overrides.dir, localeDefaults.dir);
            var dirDefaults = dir === 'rtl' ? rtlDefaults : {};
            this.dirDefaults = dirDefaults;
            this.localeDefaults = localeDefaults;
            this.computed = mergeOptions([
                globalDefaults,
                dirDefaults,
                localeDefaults,
                this.overrides,
                this.dynamicOverrides
            ]);
        };
        return OptionsManager;
    }());

    var calendarSystemClassMap = {};
    function registerCalendarSystem(name, theClass) {
        calendarSystemClassMap[name] = theClass;
    }
    function createCalendarSystem(name) {
        return new calendarSystemClassMap[name]();
    }
    var GregorianCalendarSystem = /** @class */ (function () {
        function GregorianCalendarSystem() {
        }
        GregorianCalendarSystem.prototype.getMarkerYear = function (d) {
            return d.getUTCFullYear();
        };
        GregorianCalendarSystem.prototype.getMarkerMonth = function (d) {
            return d.getUTCMonth();
        };
        GregorianCalendarSystem.prototype.getMarkerDay = function (d) {
            return d.getUTCDate();
        };
        GregorianCalendarSystem.prototype.arrayToMarker = function (arr) {
            return arrayToUtcDate(arr);
        };
        GregorianCalendarSystem.prototype.markerToArray = function (marker) {
            return dateToUtcArray(marker);
        };
        return GregorianCalendarSystem;
    }());
    registerCalendarSystem('gregory', GregorianCalendarSystem);

    var ISO_RE = /^\s*(\d{4})(-(\d{2})(-(\d{2})([T ](\d{2}):(\d{2})(:(\d{2})(\.(\d+))?)?(Z|(([-+])(\d{2})(:?(\d{2}))?))?)?)?)?$/;
    function parse(str) {
        var m = ISO_RE.exec(str);
        if (m) {
            var marker = new Date(Date.UTC(Number(m[1]), m[3] ? Number(m[3]) - 1 : 0, Number(m[5] || 1), Number(m[7] || 0), Number(m[8] || 0), Number(m[10] || 0), m[12] ? Number('0.' + m[12]) * 1000 : 0));
            if (isValidDate(marker)) {
                var timeZoneOffset = null;
                if (m[13]) {
                    timeZoneOffset = (m[15] === '-' ? -1 : 1) * (Number(m[16] || 0) * 60 +
                        Number(m[18] || 0));
                }
                return {
                    marker: marker,
                    isTimeUnspecified: !m[6],
                    timeZoneOffset: timeZoneOffset
                };
            }
        }
        return null;
    }

    var DateEnv = /** @class */ (function () {
        function DateEnv(settings) {
            var timeZone = this.timeZone = settings.timeZone;
            var isNamedTimeZone = timeZone !== 'local' && timeZone !== 'UTC';
            if (settings.namedTimeZoneImpl && isNamedTimeZone) {
                this.namedTimeZoneImpl = new settings.namedTimeZoneImpl(timeZone);
            }
            this.canComputeOffset = Boolean(!isNamedTimeZone || this.namedTimeZoneImpl);
            this.calendarSystem = createCalendarSystem(settings.calendarSystem);
            this.locale = settings.locale;
            this.weekDow = settings.locale.week.dow;
            this.weekDoy = settings.locale.week.doy;
            if (settings.weekNumberCalculation === 'ISO') {
                this.weekDow = 1;
                this.weekDoy = 4;
            }
            if (typeof settings.firstDay === 'number') {
                this.weekDow = settings.firstDay;
            }
            if (typeof settings.weekNumberCalculation === 'function') {
                this.weekNumberFunc = settings.weekNumberCalculation;
            }
            this.weekLabel = settings.weekLabel != null ? settings.weekLabel : settings.locale.options.weekLabel;
            this.cmdFormatter = settings.cmdFormatter;
        }
        // Creating / Parsing
        DateEnv.prototype.createMarker = function (input) {
            var meta = this.createMarkerMeta(input);
            if (meta === null) {
                return null;
            }
            return meta.marker;
        };
        DateEnv.prototype.createNowMarker = function () {
            if (this.canComputeOffset) {
                return this.timestampToMarker(new Date().valueOf());
            }
            else {
                // if we can't compute the current date val for a timezone,
                // better to give the current local date vals than UTC
                return arrayToUtcDate(dateToLocalArray(new Date()));
            }
        };
        DateEnv.prototype.createMarkerMeta = function (input) {
            if (typeof input === 'string') {
                return this.parse(input);
            }
            var marker = null;
            if (typeof input === 'number') {
                marker = this.timestampToMarker(input);
            }
            else if (input instanceof Date) {
                input = input.valueOf();
                if (!isNaN(input)) {
                    marker = this.timestampToMarker(input);
                }
            }
            else if (Array.isArray(input)) {
                marker = arrayToUtcDate(input);
            }
            if (marker === null || !isValidDate(marker)) {
                return null;
            }
            return { marker: marker, isTimeUnspecified: false, forcedTzo: null };
        };
        DateEnv.prototype.parse = function (s) {
            var parts = parse(s);
            if (parts === null) {
                return null;
            }
            var marker = parts.marker;
            var forcedTzo = null;
            if (parts.timeZoneOffset !== null) {
                if (this.canComputeOffset) {
                    marker = this.timestampToMarker(marker.valueOf() - parts.timeZoneOffset * 60 * 1000);
                }
                else {
                    forcedTzo = parts.timeZoneOffset;
                }
            }
            return { marker: marker, isTimeUnspecified: parts.isTimeUnspecified, forcedTzo: forcedTzo };
        };
        // Accessors
        DateEnv.prototype.getYear = function (marker) {
            return this.calendarSystem.getMarkerYear(marker);
        };
        DateEnv.prototype.getMonth = function (marker) {
            return this.calendarSystem.getMarkerMonth(marker);
        };
        // Adding / Subtracting
        DateEnv.prototype.add = function (marker, dur) {
            var a = this.calendarSystem.markerToArray(marker);
            a[0] += dur.years;
            a[1] += dur.months;
            a[2] += dur.days;
            a[6] += dur.milliseconds;
            return this.calendarSystem.arrayToMarker(a);
        };
        DateEnv.prototype.subtract = function (marker, dur) {
            var a = this.calendarSystem.markerToArray(marker);
            a[0] -= dur.years;
            a[1] -= dur.months;
            a[2] -= dur.days;
            a[6] -= dur.milliseconds;
            return this.calendarSystem.arrayToMarker(a);
        };
        DateEnv.prototype.addYears = function (marker, n) {
            var a = this.calendarSystem.markerToArray(marker);
            a[0] += n;
            return this.calendarSystem.arrayToMarker(a);
        };
        DateEnv.prototype.addMonths = function (marker, n) {
            var a = this.calendarSystem.markerToArray(marker);
            a[1] += n;
            return this.calendarSystem.arrayToMarker(a);
        };
        // Diffing Whole Units
        DateEnv.prototype.diffWholeYears = function (m0, m1) {
            var calendarSystem = this.calendarSystem;
            if (timeAsMs(m0) === timeAsMs(m1) &&
                calendarSystem.getMarkerDay(m0) === calendarSystem.getMarkerDay(m1) &&
                calendarSystem.getMarkerMonth(m0) === calendarSystem.getMarkerMonth(m1)) {
                return calendarSystem.getMarkerYear(m1) - calendarSystem.getMarkerYear(m0);
            }
            return null;
        };
        DateEnv.prototype.diffWholeMonths = function (m0, m1) {
            var calendarSystem = this.calendarSystem;
            if (timeAsMs(m0) === timeAsMs(m1) &&
                calendarSystem.getMarkerDay(m0) === calendarSystem.getMarkerDay(m1)) {
                return (calendarSystem.getMarkerMonth(m1) - calendarSystem.getMarkerMonth(m0)) +
                    (calendarSystem.getMarkerYear(m1) - calendarSystem.getMarkerYear(m0)) * 12;
            }
            return null;
        };
        // Range / Duration
        DateEnv.prototype.greatestWholeUnit = function (m0, m1) {
            var n = this.diffWholeYears(m0, m1);
            if (n !== null) {
                return { unit: 'year', value: n };
            }
            n = this.diffWholeMonths(m0, m1);
            if (n !== null) {
                return { unit: 'month', value: n };
            }
            n = diffWholeWeeks(m0, m1);
            if (n !== null) {
                return { unit: 'week', value: n };
            }
            n = diffWholeDays(m0, m1);
            if (n !== null) {
                return { unit: 'day', value: n };
            }
            n = diffHours(m0, m1);
            if (isInt(n)) {
                return { unit: 'hour', value: n };
            }
            n = diffMinutes(m0, m1);
            if (isInt(n)) {
                return { unit: 'minute', value: n };
            }
            n = diffSeconds(m0, m1);
            if (isInt(n)) {
                return { unit: 'second', value: n };
            }
            return { unit: 'millisecond', value: m1.valueOf() - m0.valueOf() };
        };
        DateEnv.prototype.countDurationsBetween = function (m0, m1, d) {
            // TODO: can use greatestWholeUnit
            var diff;
            if (d.years) {
                diff = this.diffWholeYears(m0, m1);
                if (diff !== null) {
                    return diff / asRoughYears(d);
                }
            }
            if (d.months) {
                diff = this.diffWholeMonths(m0, m1);
                if (diff !== null) {
                    return diff / asRoughMonths(d);
                }
            }
            if (d.days) {
                diff = diffWholeDays(m0, m1);
                if (diff !== null) {
                    return diff / asRoughDays(d);
                }
            }
            return (m1.valueOf() - m0.valueOf()) / asRoughMs(d);
        };
        // Start-Of
        DateEnv.prototype.startOf = function (m, unit) {
            if (unit === 'year') {
                return this.startOfYear(m);
            }
            else if (unit === 'month') {
                return this.startOfMonth(m);
            }
            else if (unit === 'week') {
                return this.startOfWeek(m);
            }
            else if (unit === 'day') {
                return startOfDay(m);
            }
            else if (unit === 'hour') {
                return startOfHour(m);
            }
            else if (unit === 'minute') {
                return startOfMinute(m);
            }
            else if (unit === 'second') {
                return startOfSecond(m);
            }
        };
        DateEnv.prototype.startOfYear = function (m) {
            return this.calendarSystem.arrayToMarker([
                this.calendarSystem.getMarkerYear(m)
            ]);
        };
        DateEnv.prototype.startOfMonth = function (m) {
            return this.calendarSystem.arrayToMarker([
                this.calendarSystem.getMarkerYear(m),
                this.calendarSystem.getMarkerMonth(m)
            ]);
        };
        DateEnv.prototype.startOfWeek = function (m) {
            return this.calendarSystem.arrayToMarker([
                this.calendarSystem.getMarkerYear(m),
                this.calendarSystem.getMarkerMonth(m),
                m.getUTCDate() - ((m.getUTCDay() - this.weekDow + 7) % 7)
            ]);
        };
        // Week Number
        DateEnv.prototype.computeWeekNumber = function (marker) {
            if (this.weekNumberFunc) {
                return this.weekNumberFunc(this.toDate(marker));
            }
            else {
                return weekOfYear(marker, this.weekDow, this.weekDoy);
            }
        };
        // TODO: choke on timeZoneName: long
        DateEnv.prototype.format = function (marker, formatter, dateOptions) {
            if (dateOptions === void 0) { dateOptions = {}; }
            return formatter.format({
                marker: marker,
                timeZoneOffset: dateOptions.forcedTzo != null ?
                    dateOptions.forcedTzo :
                    this.offsetForMarker(marker)
            }, this);
        };
        DateEnv.prototype.formatRange = function (start, end, formatter, dateOptions) {
            if (dateOptions === void 0) { dateOptions = {}; }
            if (dateOptions.isEndExclusive) {
                end = addMs(end, -1);
            }
            return formatter.formatRange({
                marker: start,
                timeZoneOffset: dateOptions.forcedStartTzo != null ?
                    dateOptions.forcedStartTzo :
                    this.offsetForMarker(start)
            }, {
                marker: end,
                timeZoneOffset: dateOptions.forcedEndTzo != null ?
                    dateOptions.forcedEndTzo :
                    this.offsetForMarker(end)
            }, this);
        };
        DateEnv.prototype.formatIso = function (marker, extraOptions) {
            if (extraOptions === void 0) { extraOptions = {}; }
            var timeZoneOffset = null;
            if (!extraOptions.omitTimeZoneOffset) {
                if (extraOptions.forcedTzo != null) {
                    timeZoneOffset = extraOptions.forcedTzo;
                }
                else {
                    timeZoneOffset = this.offsetForMarker(marker);
                }
            }
            return buildIsoString(marker, timeZoneOffset, extraOptions.omitTime);
        };
        // TimeZone
        DateEnv.prototype.timestampToMarker = function (ms) {
            if (this.timeZone === 'local') {
                return arrayToUtcDate(dateToLocalArray(new Date(ms)));
            }
            else if (this.timeZone === 'UTC' || !this.namedTimeZoneImpl) {
                return new Date(ms);
            }
            else {
                return arrayToUtcDate(this.namedTimeZoneImpl.timestampToArray(ms));
            }
        };
        DateEnv.prototype.offsetForMarker = function (m) {
            if (this.timeZone === 'local') {
                return -arrayToLocalDate(dateToUtcArray(m)).getTimezoneOffset(); // convert "inverse" offset to "normal" offset
            }
            else if (this.timeZone === 'UTC') {
                return 0;
            }
            else if (this.namedTimeZoneImpl) {
                return this.namedTimeZoneImpl.offsetForArray(dateToUtcArray(m));
            }
            return null;
        };
        // Conversion
        DateEnv.prototype.toDate = function (m, forcedTzo) {
            if (this.timeZone === 'local') {
                return arrayToLocalDate(dateToUtcArray(m));
            }
            else if (this.timeZone === 'UTC') {
                return new Date(m.valueOf()); // make sure it's a copy
            }
            else if (!this.namedTimeZoneImpl) {
                return new Date(m.valueOf() - (forcedTzo || 0));
            }
            else {
                return new Date(m.valueOf() -
                    this.namedTimeZoneImpl.offsetForArray(dateToUtcArray(m)) * 1000 * 60 // convert minutes -> ms
                );
            }
        };
        return DateEnv;
    }());

    var SIMPLE_SOURCE_PROPS = {
        id: String,
        allDayDefault: Boolean,
        eventDataTransform: Function,
        success: Function,
        failure: Function
    };
    var uid$2 = 0;
    function doesSourceNeedRange(eventSource, calendar) {
        var defs = calendar.pluginSystem.hooks.eventSourceDefs;
        return !defs[eventSource.sourceDefId].ignoreRange;
    }
    function parseEventSource(raw, calendar) {
        var defs = calendar.pluginSystem.hooks.eventSourceDefs;
        for (var i = defs.length - 1; i >= 0; i--) { // later-added plugins take precedence
            var def = defs[i];
            var meta = def.parseMeta(raw);
            if (meta) {
                var res = parseEventSourceProps(typeof raw === 'object' ? raw : {}, meta, i, calendar);
                res._raw = raw;
                return res;
            }
        }
        return null;
    }
    function parseEventSourceProps(raw, meta, sourceDefId, calendar) {
        var leftovers0 = {};
        var props = refineProps(raw, SIMPLE_SOURCE_PROPS, {}, leftovers0);
        var leftovers1 = {};
        var ui = processUnscopedUiProps(leftovers0, calendar, leftovers1);
        props.isFetching = false;
        props.latestFetchId = '';
        props.fetchRange = null;
        props.publicId = String(raw.id || '');
        props.sourceId = String(uid$2++);
        props.sourceDefId = sourceDefId;
        props.meta = meta;
        props.ui = ui;
        props.extendedProps = leftovers1;
        return props;
    }

    function reduceEventSources (eventSources, action, dateProfile, calendar) {
        switch (action.type) {
            case 'ADD_EVENT_SOURCES': // already parsed
                return addSources(eventSources, action.sources, dateProfile ? dateProfile.activeRange : null, calendar);
            case 'REMOVE_EVENT_SOURCE':
                return removeSource(eventSources, action.sourceId);
            case 'PREV': // TODO: how do we track all actions that affect dateProfile :(
            case 'NEXT':
            case 'SET_DATE':
            case 'SET_VIEW_TYPE':
                if (dateProfile) {
                    return fetchDirtySources(eventSources, dateProfile.activeRange, calendar);
                }
                else {
                    return eventSources;
                }
            case 'FETCH_EVENT_SOURCES':
            case 'CHANGE_TIMEZONE':
                return fetchSourcesByIds(eventSources, action.sourceIds ?
                    arrayToHash(action.sourceIds) :
                    excludeStaticSources(eventSources, calendar), dateProfile ? dateProfile.activeRange : null, calendar);
            case 'RECEIVE_EVENTS':
            case 'RECEIVE_EVENT_ERROR':
                return receiveResponse(eventSources, action.sourceId, action.fetchId, action.fetchRange);
            case 'REMOVE_ALL_EVENT_SOURCES':
                return {};
            default:
                return eventSources;
        }
    }
    var uid$3 = 0;
    function addSources(eventSourceHash, sources, fetchRange, calendar) {
        var hash = {};
        for (var _i = 0, sources_1 = sources; _i < sources_1.length; _i++) {
            var source = sources_1[_i];
            hash[source.sourceId] = source;
        }
        if (fetchRange) {
            hash = fetchDirtySources(hash, fetchRange, calendar);
        }
        return __assign({}, eventSourceHash, hash);
    }
    function removeSource(eventSourceHash, sourceId) {
        return filterHash(eventSourceHash, function (eventSource) {
            return eventSource.sourceId !== sourceId;
        });
    }
    function fetchDirtySources(sourceHash, fetchRange, calendar) {
        return fetchSourcesByIds(sourceHash, filterHash(sourceHash, function (eventSource) {
            return isSourceDirty(eventSource, fetchRange, calendar);
        }), fetchRange, calendar);
    }
    function isSourceDirty(eventSource, fetchRange, calendar) {
        if (!doesSourceNeedRange(eventSource, calendar)) {
            return !eventSource.latestFetchId;
        }
        else {
            return !calendar.opt('lazyFetching') ||
                !eventSource.fetchRange ||
                eventSource.isFetching || // always cancel outdated in-progress fetches
                fetchRange.start < eventSource.fetchRange.start ||
                fetchRange.end > eventSource.fetchRange.end;
        }
    }
    function fetchSourcesByIds(prevSources, sourceIdHash, fetchRange, calendar) {
        var nextSources = {};
        for (var sourceId in prevSources) {
            var source = prevSources[sourceId];
            if (sourceIdHash[sourceId]) {
                nextSources[sourceId] = fetchSource(source, fetchRange, calendar);
            }
            else {
                nextSources[sourceId] = source;
            }
        }
        return nextSources;
    }
    function fetchSource(eventSource, fetchRange, calendar) {
        var sourceDef = calendar.pluginSystem.hooks.eventSourceDefs[eventSource.sourceDefId];
        var fetchId = String(uid$3++);
        sourceDef.fetch({
            eventSource: eventSource,
            calendar: calendar,
            range: fetchRange
        }, function (res) {
            var rawEvents = res.rawEvents;
            var calSuccess = calendar.opt('eventSourceSuccess');
            var calSuccessRes;
            var sourceSuccessRes;
            if (eventSource.success) {
                sourceSuccessRes = eventSource.success(rawEvents, res.xhr);
            }
            if (calSuccess) {
                calSuccessRes = calSuccess(rawEvents, res.xhr);
            }
            rawEvents = sourceSuccessRes || calSuccessRes || rawEvents;
            calendar.dispatch({
                type: 'RECEIVE_EVENTS',
                sourceId: eventSource.sourceId,
                fetchId: fetchId,
                fetchRange: fetchRange,
                rawEvents: rawEvents
            });
        }, function (error) {
            var callFailure = calendar.opt('eventSourceFailure');
            console.warn(error.message, error);
            if (eventSource.failure) {
                eventSource.failure(error);
            }
            if (callFailure) {
                callFailure(error);
            }
            calendar.dispatch({
                type: 'RECEIVE_EVENT_ERROR',
                sourceId: eventSource.sourceId,
                fetchId: fetchId,
                fetchRange: fetchRange,
                error: error
            });
        });
        return __assign({}, eventSource, { isFetching: true, latestFetchId: fetchId });
    }
    function receiveResponse(sourceHash, sourceId, fetchId, fetchRange) {
        var _a;
        var eventSource = sourceHash[sourceId];
        if (eventSource && // not already removed
            fetchId === eventSource.latestFetchId) {
            return __assign({}, sourceHash, (_a = {}, _a[sourceId] = __assign({}, eventSource, { isFetching: false, fetchRange: fetchRange // also serves as a marker that at least one fetch has completed
             }), _a));
        }
        return sourceHash;
    }
    function excludeStaticSources(eventSources, calendar) {
        return filterHash(eventSources, function (eventSource) {
            return doesSourceNeedRange(eventSource, calendar);
        });
    }

    var DateProfileGenerator = /** @class */ (function () {
        function DateProfileGenerator(viewSpec, calendar) {
            this.viewSpec = viewSpec;
            this.options = viewSpec.options;
            this.dateEnv = calendar.dateEnv;
            this.calendar = calendar;
            this.initHiddenDays();
        }
        /* Date Range Computation
        ------------------------------------------------------------------------------------------------------------------*/
        // Builds a structure with info about what the dates/ranges will be for the "prev" view.
        DateProfileGenerator.prototype.buildPrev = function (currentDateProfile, currentDate) {
            var dateEnv = this.dateEnv;
            var prevDate = dateEnv.subtract(dateEnv.startOf(currentDate, currentDateProfile.currentRangeUnit), // important for start-of-month
            currentDateProfile.dateIncrement);
            return this.build(prevDate, -1);
        };
        // Builds a structure with info about what the dates/ranges will be for the "next" view.
        DateProfileGenerator.prototype.buildNext = function (currentDateProfile, currentDate) {
            var dateEnv = this.dateEnv;
            var nextDate = dateEnv.add(dateEnv.startOf(currentDate, currentDateProfile.currentRangeUnit), // important for start-of-month
            currentDateProfile.dateIncrement);
            return this.build(nextDate, 1);
        };
        // Builds a structure holding dates/ranges for rendering around the given date.
        // Optional direction param indicates whether the date is being incremented/decremented
        // from its previous value. decremented = -1, incremented = 1 (default).
        DateProfileGenerator.prototype.build = function (currentDate, direction, forceToValid) {
            if (forceToValid === void 0) { forceToValid = false; }
            var validRange;
            var minTime = null;
            var maxTime = null;
            var currentInfo;
            var isRangeAllDay;
            var renderRange;
            var activeRange;
            var isValid;
            validRange = this.buildValidRange();
            validRange = this.trimHiddenDays(validRange);
            if (forceToValid) {
                currentDate = constrainMarkerToRange(currentDate, validRange);
            }
            currentInfo = this.buildCurrentRangeInfo(currentDate, direction);
            isRangeAllDay = /^(year|month|week|day)$/.test(currentInfo.unit);
            renderRange = this.buildRenderRange(this.trimHiddenDays(currentInfo.range), currentInfo.unit, isRangeAllDay);
            renderRange = this.trimHiddenDays(renderRange);
            activeRange = renderRange;
            if (!this.options.showNonCurrentDates) {
                activeRange = intersectRanges(activeRange, currentInfo.range);
            }
            minTime = createDuration(this.options.minTime);
            maxTime = createDuration(this.options.maxTime);
            activeRange = this.adjustActiveRange(activeRange, minTime, maxTime);
            activeRange = intersectRanges(activeRange, validRange); // might return null
            // it's invalid if the originally requested date is not contained,
            // or if the range is completely outside of the valid range.
            isValid = rangesIntersect(currentInfo.range, validRange);
            return {
                // constraint for where prev/next operations can go and where events can be dragged/resized to.
                // an object with optional start and end properties.
                validRange: validRange,
                // range the view is formally responsible for.
                // for example, a month view might have 1st-31st, excluding padded dates
                currentRange: currentInfo.range,
                // name of largest unit being displayed, like "month" or "week"
                currentRangeUnit: currentInfo.unit,
                isRangeAllDay: isRangeAllDay,
                // dates that display events and accept drag-n-drop
                // will be `null` if no dates accept events
                activeRange: activeRange,
                // date range with a rendered skeleton
                // includes not-active days that need some sort of DOM
                renderRange: renderRange,
                // Duration object that denotes the first visible time of any given day
                minTime: minTime,
                // Duration object that denotes the exclusive visible end time of any given day
                maxTime: maxTime,
                isValid: isValid,
                // how far the current date will move for a prev/next operation
                dateIncrement: this.buildDateIncrement(currentInfo.duration)
                // pass a fallback (might be null) ^
            };
        };
        // Builds an object with optional start/end properties.
        // Indicates the minimum/maximum dates to display.
        // not responsible for trimming hidden days.
        DateProfileGenerator.prototype.buildValidRange = function () {
            return this.getRangeOption('validRange', this.calendar.getNow()) ||
                { start: null, end: null }; // completely open-ended
        };
        // Builds a structure with info about the "current" range, the range that is
        // highlighted as being the current month for example.
        // See build() for a description of `direction`.
        // Guaranteed to have `range` and `unit` properties. `duration` is optional.
        DateProfileGenerator.prototype.buildCurrentRangeInfo = function (date, direction) {
            var _a = this, viewSpec = _a.viewSpec, dateEnv = _a.dateEnv;
            var duration = null;
            var unit = null;
            var range = null;
            var dayCount;
            if (viewSpec.duration) {
                duration = viewSpec.duration;
                unit = viewSpec.durationUnit;
                range = this.buildRangeFromDuration(date, direction, duration, unit);
            }
            else if ((dayCount = this.options.dayCount)) {
                unit = 'day';
                range = this.buildRangeFromDayCount(date, direction, dayCount);
            }
            else if ((range = this.buildCustomVisibleRange(date))) {
                unit = dateEnv.greatestWholeUnit(range.start, range.end).unit;
            }
            else {
                duration = this.getFallbackDuration();
                unit = greatestDurationDenominator(duration).unit;
                range = this.buildRangeFromDuration(date, direction, duration, unit);
            }
            return { duration: duration, unit: unit, range: range };
        };
        DateProfileGenerator.prototype.getFallbackDuration = function () {
            return createDuration({ day: 1 });
        };
        // Returns a new activeRange to have time values (un-ambiguate)
        // minTime or maxTime causes the range to expand.
        DateProfileGenerator.prototype.adjustActiveRange = function (range, minTime, maxTime) {
            var dateEnv = this.dateEnv;
            var start = range.start;
            var end = range.end;
            if (this.viewSpec.class.prototype.usesMinMaxTime) {
                // expand active range if minTime is negative (why not when positive?)
                if (asRoughDays(minTime) < 0) {
                    start = startOfDay(start); // necessary?
                    start = dateEnv.add(start, minTime);
                }
                // expand active range if maxTime is beyond one day (why not when positive?)
                if (asRoughDays(maxTime) > 1) {
                    end = startOfDay(end); // necessary?
                    end = addDays(end, -1);
                    end = dateEnv.add(end, maxTime);
                }
            }
            return { start: start, end: end };
        };
        // Builds the "current" range when it is specified as an explicit duration.
        // `unit` is the already-computed greatestDurationDenominator unit of duration.
        DateProfileGenerator.prototype.buildRangeFromDuration = function (date, direction, duration, unit) {
            var dateEnv = this.dateEnv;
            var alignment = this.options.dateAlignment;
            var dateIncrementInput;
            var dateIncrementDuration;
            var start;
            var end;
            var res;
            // compute what the alignment should be
            if (!alignment) {
                dateIncrementInput = this.options.dateIncrement;
                if (dateIncrementInput) {
                    dateIncrementDuration = createDuration(dateIncrementInput);
                    // use the smaller of the two units
                    if (asRoughMs(dateIncrementDuration) < asRoughMs(duration)) {
                        alignment = greatestDurationDenominator(dateIncrementDuration, !getWeeksFromInput(dateIncrementInput)).unit;
                    }
                    else {
                        alignment = unit;
                    }
                }
                else {
                    alignment = unit;
                }
            }
            // if the view displays a single day or smaller
            if (asRoughDays(duration) <= 1) {
                if (this.isHiddenDay(start)) {
                    start = this.skipHiddenDays(start, direction);
                    start = startOfDay(start);
                }
            }
            function computeRes() {
                start = dateEnv.startOf(date, alignment);
                end = dateEnv.add(start, duration);
                res = { start: start, end: end };
            }
            computeRes();
            // if range is completely enveloped by hidden days, go past the hidden days
            if (!this.trimHiddenDays(res)) {
                date = this.skipHiddenDays(date, direction);
                computeRes();
            }
            return res;
        };
        // Builds the "current" range when a dayCount is specified.
        DateProfileGenerator.prototype.buildRangeFromDayCount = function (date, direction, dayCount) {
            var dateEnv = this.dateEnv;
            var customAlignment = this.options.dateAlignment;
            var runningCount = 0;
            var start = date;
            var end;
            if (customAlignment) {
                start = dateEnv.startOf(start, customAlignment);
            }
            start = startOfDay(start);
            start = this.skipHiddenDays(start, direction);
            end = start;
            do {
                end = addDays(end, 1);
                if (!this.isHiddenDay(end)) {
                    runningCount++;
                }
            } while (runningCount < dayCount);
            return { start: start, end: end };
        };
        // Builds a normalized range object for the "visible" range,
        // which is a way to define the currentRange and activeRange at the same time.
        DateProfileGenerator.prototype.buildCustomVisibleRange = function (date) {
            var dateEnv = this.dateEnv;
            var visibleRange = this.getRangeOption('visibleRange', dateEnv.toDate(date));
            if (visibleRange && (visibleRange.start == null || visibleRange.end == null)) {
                return null;
            }
            return visibleRange;
        };
        // Computes the range that will represent the element/cells for *rendering*,
        // but which may have voided days/times.
        // not responsible for trimming hidden days.
        DateProfileGenerator.prototype.buildRenderRange = function (currentRange, currentRangeUnit, isRangeAllDay) {
            return currentRange;
        };
        // Compute the duration value that should be added/substracted to the current date
        // when a prev/next operation happens.
        DateProfileGenerator.prototype.buildDateIncrement = function (fallback) {
            var dateIncrementInput = this.options.dateIncrement;
            var customAlignment;
            if (dateIncrementInput) {
                return createDuration(dateIncrementInput);
            }
            else if ((customAlignment = this.options.dateAlignment)) {
                return createDuration(1, customAlignment);
            }
            else if (fallback) {
                return fallback;
            }
            else {
                return createDuration({ days: 1 });
            }
        };
        // Arguments after name will be forwarded to a hypothetical function value
        // WARNING: passed-in arguments will be given to generator functions as-is and can cause side-effects.
        // Always clone your objects if you fear mutation.
        DateProfileGenerator.prototype.getRangeOption = function (name) {
            var otherArgs = [];
            for (var _i = 1; _i < arguments.length; _i++) {
                otherArgs[_i - 1] = arguments[_i];
            }
            var val = this.options[name];
            if (typeof val === 'function') {
                val = val.apply(null, otherArgs);
            }
            if (val) {
                val = parseRange(val, this.dateEnv);
            }
            if (val) {
                val = computeVisibleDayRange(val);
            }
            return val;
        };
        /* Hidden Days
        ------------------------------------------------------------------------------------------------------------------*/
        // Initializes internal variables related to calculating hidden days-of-week
        DateProfileGenerator.prototype.initHiddenDays = function () {
            var hiddenDays = this.options.hiddenDays || []; // array of day-of-week indices that are hidden
            var isHiddenDayHash = []; // is the day-of-week hidden? (hash with day-of-week-index -> bool)
            var dayCnt = 0;
            var i;
            if (this.options.weekends === false) {
                hiddenDays.push(0, 6); // 0=sunday, 6=saturday
            }
            for (i = 0; i < 7; i++) {
                if (!(isHiddenDayHash[i] = hiddenDays.indexOf(i) !== -1)) {
                    dayCnt++;
                }
            }
            if (!dayCnt) {
                throw new Error('invalid hiddenDays'); // all days were hidden? bad.
            }
            this.isHiddenDayHash = isHiddenDayHash;
        };
        // Remove days from the beginning and end of the range that are computed as hidden.
        // If the whole range is trimmed off, returns null
        DateProfileGenerator.prototype.trimHiddenDays = function (range) {
            var start = range.start;
            var end = range.end;
            if (start) {
                start = this.skipHiddenDays(start);
            }
            if (end) {
                end = this.skipHiddenDays(end, -1, true);
            }
            if (start == null || end == null || start < end) {
                return { start: start, end: end };
            }
            return null;
        };
        // Is the current day hidden?
        // `day` is a day-of-week index (0-6), or a Date (used for UTC)
        DateProfileGenerator.prototype.isHiddenDay = function (day) {
            if (day instanceof Date) {
                day = day.getUTCDay();
            }
            return this.isHiddenDayHash[day];
        };
        // Incrementing the current day until it is no longer a hidden day, returning a copy.
        // DOES NOT CONSIDER validRange!
        // If the initial value of `date` is not a hidden day, don't do anything.
        // Pass `isExclusive` as `true` if you are dealing with an end date.
        // `inc` defaults to `1` (increment one day forward each time)
        DateProfileGenerator.prototype.skipHiddenDays = function (date, inc, isExclusive) {
            if (inc === void 0) { inc = 1; }
            if (isExclusive === void 0) { isExclusive = false; }
            while (this.isHiddenDayHash[(date.getUTCDay() + (isExclusive ? inc : 0) + 7) % 7]) {
                date = addDays(date, inc);
            }
            return date;
        };
        return DateProfileGenerator;
    }());
    // TODO: find a way to avoid comparing DateProfiles. it's tedious
    function isDateProfilesEqual(p0, p1) {
        return rangesEqual(p0.validRange, p1.validRange) &&
            rangesEqual(p0.activeRange, p1.activeRange) &&
            rangesEqual(p0.renderRange, p1.renderRange) &&
            durationsEqual(p0.minTime, p1.minTime) &&
            durationsEqual(p0.maxTime, p1.maxTime);
        /*
        TODO: compare more?
          currentRange: DateRange
          currentRangeUnit: string
          isRangeAllDay: boolean
          isValid: boolean
          dateIncrement: Duration
        */
    }

    function reduce (state, action, calendar) {
        var viewType = reduceViewType(state.viewType, action);
        var dateProfile = reduceDateProfile(state.dateProfile, action, state.currentDate, viewType, calendar);
        var eventSources = reduceEventSources(state.eventSources, action, dateProfile, calendar);
        var nextState = __assign({}, state, { viewType: viewType,
            dateProfile: dateProfile, currentDate: reduceCurrentDate(state.currentDate, action, dateProfile), eventSources: eventSources, eventStore: reduceEventStore(state.eventStore, action, eventSources, dateProfile, calendar), dateSelection: reduceDateSelection(state.dateSelection, action, calendar), eventSelection: reduceSelectedEvent(state.eventSelection, action), eventDrag: reduceEventDrag(state.eventDrag, action, eventSources, calendar), eventResize: reduceEventResize(state.eventResize, action, eventSources, calendar), eventSourceLoadingLevel: computeLoadingLevel(eventSources), loadingLevel: computeLoadingLevel(eventSources) });
        for (var _i = 0, _a = calendar.pluginSystem.hooks.reducers; _i < _a.length; _i++) {
            var reducerFunc = _a[_i];
            nextState = reducerFunc(nextState, action, calendar);
        }
        // console.log(action.type, nextState)
        return nextState;
    }
    function reduceViewType(currentViewType, action) {
        switch (action.type) {
            case 'SET_VIEW_TYPE':
                return action.viewType;
            default:
                return currentViewType;
        }
    }
    function reduceDateProfile(currentDateProfile, action, currentDate, viewType, calendar) {
        var newDateProfile;
        switch (action.type) {
            case 'PREV':
                newDateProfile = calendar.dateProfileGenerators[viewType].buildPrev(currentDateProfile, currentDate);
                break;
            case 'NEXT':
                newDateProfile = calendar.dateProfileGenerators[viewType].buildNext(currentDateProfile, currentDate);
                break;
            case 'SET_DATE':
                if (!currentDateProfile.activeRange ||
                    !rangeContainsMarker(currentDateProfile.currentRange, action.dateMarker)) {
                    newDateProfile = calendar.dateProfileGenerators[viewType].build(action.dateMarker, undefined, true // forceToValid
                    );
                }
                break;
            case 'SET_VIEW_TYPE':
                var generator = calendar.dateProfileGenerators[viewType];
                if (!generator) {
                    throw new Error(viewType ?
                        'The FullCalendar view "' + viewType + '" does not exist. Make sure your plugins are loaded correctly.' :
                        'No available FullCalendar view plugins.');
                }
                newDateProfile = generator.build(action.dateMarker || currentDate, undefined, true // forceToValid
                );
                break;
        }
        if (newDateProfile &&
            newDateProfile.isValid &&
            !(currentDateProfile && isDateProfilesEqual(currentDateProfile, newDateProfile))) {
            return newDateProfile;
        }
        else {
            return currentDateProfile;
        }
    }
    function reduceCurrentDate(currentDate, action, dateProfile) {
        switch (action.type) {
            case 'PREV':
            case 'NEXT':
                if (!rangeContainsMarker(dateProfile.currentRange, currentDate)) {
                    return dateProfile.currentRange.start;
                }
                else {
                    return currentDate;
                }
            case 'SET_DATE':
            case 'SET_VIEW_TYPE':
                var newDate = action.dateMarker || currentDate;
                if (dateProfile.activeRange && !rangeContainsMarker(dateProfile.activeRange, newDate)) {
                    return dateProfile.currentRange.start;
                }
                else {
                    return newDate;
                }
            default:
                return currentDate;
        }
    }
    function reduceDateSelection(currentSelection, action, calendar) {
        switch (action.type) {
            case 'SELECT_DATES':
                return action.selection;
            case 'UNSELECT_DATES':
                return null;
            default:
                return currentSelection;
        }
    }
    function reduceSelectedEvent(currentInstanceId, action) {
        switch (action.type) {
            case 'SELECT_EVENT':
                return action.eventInstanceId;
            case 'UNSELECT_EVENT':
                return '';
            default:
                return currentInstanceId;
        }
    }
    function reduceEventDrag(currentDrag, action, sources, calendar) {
        switch (action.type) {
            case 'SET_EVENT_DRAG':
                var newDrag = action.state;
                return {
                    affectedEvents: newDrag.affectedEvents,
                    mutatedEvents: newDrag.mutatedEvents,
                    isEvent: newDrag.isEvent,
                    origSeg: newDrag.origSeg
                };
            case 'UNSET_EVENT_DRAG':
                return null;
            default:
                return currentDrag;
        }
    }
    function reduceEventResize(currentResize, action, sources, calendar) {
        switch (action.type) {
            case 'SET_EVENT_RESIZE':
                var newResize = action.state;
                return {
                    affectedEvents: newResize.affectedEvents,
                    mutatedEvents: newResize.mutatedEvents,
                    isEvent: newResize.isEvent,
                    origSeg: newResize.origSeg
                };
            case 'UNSET_EVENT_RESIZE':
                return null;
            default:
                return currentResize;
        }
    }
    function computeLoadingLevel(eventSources) {
        var cnt = 0;
        for (var sourceId in eventSources) {
            if (eventSources[sourceId].isFetching) {
                cnt++;
            }
        }
        return cnt;
    }

    var STANDARD_PROPS = {
        start: null,
        end: null,
        allDay: Boolean
    };
    function parseDateSpan(raw, dateEnv, defaultDuration) {
        var span = parseOpenDateSpan(raw, dateEnv);
        var range = span.range;
        if (!range.start) {
            return null;
        }
        if (!range.end) {
            if (defaultDuration == null) {
                return null;
            }
            else {
                range.end = dateEnv.add(range.start, defaultDuration);
            }
        }
        return span;
    }
    /*
    TODO: somehow combine with parseRange?
    Will return null if the start/end props were present but parsed invalidly.
    */
    function parseOpenDateSpan(raw, dateEnv) {
        var leftovers = {};
        var standardProps = refineProps(raw, STANDARD_PROPS, {}, leftovers);
        var startMeta = standardProps.start ? dateEnv.createMarkerMeta(standardProps.start) : null;
        var endMeta = standardProps.end ? dateEnv.createMarkerMeta(standardProps.end) : null;
        var allDay = standardProps.allDay;
        if (allDay == null) {
            allDay = (startMeta && startMeta.isTimeUnspecified) &&
                (!endMeta || endMeta.isTimeUnspecified);
        }
        // use this leftover object as the selection object
        leftovers.range = {
            start: startMeta ? startMeta.marker : null,
            end: endMeta ? endMeta.marker : null
        };
        leftovers.allDay = allDay;
        return leftovers;
    }
    function isDateSpansEqual(span0, span1) {
        return rangesEqual(span0.range, span1.range) &&
            span0.allDay === span1.allDay &&
            isSpanPropsEqual(span0, span1);
    }
    // the NON-DATE-RELATED props
    function isSpanPropsEqual(span0, span1) {
        for (var propName in span1) {
            if (propName !== 'range' && propName !== 'allDay') {
                if (span0[propName] !== span1[propName]) {
                    return false;
                }
            }
        }
        // are there any props that span0 has that span1 DOESN'T have?
        // both have range/allDay, so no need to special-case.
        for (var propName in span0) {
            if (!(propName in span1)) {
                return false;
            }
        }
        return true;
    }
    function buildDateSpanApi(span, dateEnv) {
        return {
            start: dateEnv.toDate(span.range.start),
            end: dateEnv.toDate(span.range.end),
            startStr: dateEnv.formatIso(span.range.start, { omitTime: span.allDay }),
            endStr: dateEnv.formatIso(span.range.end, { omitTime: span.allDay }),
            allDay: span.allDay
        };
    }
    function buildDatePointApi(span, dateEnv) {
        return {
            date: dateEnv.toDate(span.range.start),
            dateStr: dateEnv.formatIso(span.range.start, { omitTime: span.allDay }),
            allDay: span.allDay
        };
    }
    function fabricateEventRange(dateSpan, eventUiBases, calendar) {
        var def = parseEventDef({ editable: false }, '', // sourceId
        dateSpan.allDay, true, // hasEnd
        calendar);
        return {
            def: def,
            ui: compileEventUi(def, eventUiBases),
            instance: createEventInstance(def.defId, dateSpan.range),
            range: dateSpan.range,
            isStart: true,
            isEnd: true
        };
    }

    function compileViewDefs(defaultConfigs, overrideConfigs) {
        var hash = {};
        var viewType;
        for (viewType in defaultConfigs) {
            ensureViewDef(viewType, hash, defaultConfigs, overrideConfigs);
        }
        for (viewType in overrideConfigs) {
            ensureViewDef(viewType, hash, defaultConfigs, overrideConfigs);
        }
        return hash;
    }
    function ensureViewDef(viewType, hash, defaultConfigs, overrideConfigs) {
        if (hash[viewType]) {
            return hash[viewType];
        }
        var viewDef = buildViewDef(viewType, hash, defaultConfigs, overrideConfigs);
        if (viewDef) {
            hash[viewType] = viewDef;
        }
        return viewDef;
    }
    function buildViewDef(viewType, hash, defaultConfigs, overrideConfigs) {
        var defaultConfig = defaultConfigs[viewType];
        var overrideConfig = overrideConfigs[viewType];
        var queryProp = function (name) {
            return (defaultConfig && defaultConfig[name] !== null) ? defaultConfig[name] :
                ((overrideConfig && overrideConfig[name] !== null) ? overrideConfig[name] : null);
        };
        var theClass = queryProp('class');
        var superType = queryProp('superType');
        if (!superType && theClass) {
            superType =
                findViewNameBySubclass(theClass, overrideConfigs) ||
                    findViewNameBySubclass(theClass, defaultConfigs);
        }
        var superDef = null;
        if (superType) {
            if (superType === viewType) {
                throw new Error('Can\'t have a custom view type that references itself');
            }
            superDef = ensureViewDef(superType, hash, defaultConfigs, overrideConfigs);
        }
        if (!theClass && superDef) {
            theClass = superDef.class;
        }
        if (!theClass) {
            return null; // don't throw a warning, might be settings for a single-unit view
        }
        return {
            type: viewType,
            class: theClass,
            defaults: __assign({}, (superDef ? superDef.defaults : {}), (defaultConfig ? defaultConfig.options : {})),
            overrides: __assign({}, (superDef ? superDef.overrides : {}), (overrideConfig ? overrideConfig.options : {}))
        };
    }
    function findViewNameBySubclass(viewSubclass, configs) {
        var superProto = Object.getPrototypeOf(viewSubclass.prototype);
        for (var viewType in configs) {
            var parsed = configs[viewType];
            // need DIRECT subclass, so instanceof won't do it
            if (parsed.class && parsed.class.prototype === superProto) {
                return viewType;
            }
        }
        return '';
    }

    function parseViewConfigs(inputs) {
        return mapHash(inputs, parseViewConfig);
    }
    var VIEW_DEF_PROPS = {
        type: String,
        class: null
    };
    function parseViewConfig(input) {
        if (typeof input === 'function') {
            input = { class: input };
        }
        var options = {};
        var props = refineProps(input, VIEW_DEF_PROPS, {}, options);
        return {
            superType: props.type,
            class: props.class,
            options: options
        };
    }

    function buildViewSpecs(defaultInputs, optionsManager) {
        var defaultConfigs = parseViewConfigs(defaultInputs);
        var overrideConfigs = parseViewConfigs(optionsManager.overrides.views);
        var viewDefs = compileViewDefs(defaultConfigs, overrideConfigs);
        return mapHash(viewDefs, function (viewDef) {
            return buildViewSpec(viewDef, overrideConfigs, optionsManager);
        });
    }
    function buildViewSpec(viewDef, overrideConfigs, optionsManager) {
        var durationInput = viewDef.overrides.duration ||
            viewDef.defaults.duration ||
            optionsManager.dynamicOverrides.duration ||
            optionsManager.overrides.duration;
        var duration = null;
        var durationUnit = '';
        var singleUnit = '';
        var singleUnitOverrides = {};
        if (durationInput) {
            duration = createDuration(durationInput);
            if (duration) { // valid?
                var denom = greatestDurationDenominator(duration, !getWeeksFromInput(durationInput));
                durationUnit = denom.unit;
                if (denom.value === 1) {
                    singleUnit = durationUnit;
                    singleUnitOverrides = overrideConfigs[durationUnit] ? overrideConfigs[durationUnit].options : {};
                }
            }
        }
        var queryButtonText = function (options) {
            var buttonTextMap = options.buttonText || {};
            var buttonTextKey = viewDef.defaults.buttonTextKey;
            if (buttonTextKey != null && buttonTextMap[buttonTextKey] != null) {
                return buttonTextMap[buttonTextKey];
            }
            if (buttonTextMap[viewDef.type] != null) {
                return buttonTextMap[viewDef.type];
            }
            if (buttonTextMap[singleUnit] != null) {
                return buttonTextMap[singleUnit];
            }
        };
        return {
            type: viewDef.type,
            class: viewDef.class,
            duration: duration,
            durationUnit: durationUnit,
            singleUnit: singleUnit,
            options: __assign({}, globalDefaults, viewDef.defaults, optionsManager.dirDefaults, optionsManager.localeDefaults, optionsManager.overrides, singleUnitOverrides, viewDef.overrides, optionsManager.dynamicOverrides),
            buttonTextOverride: queryButtonText(optionsManager.dynamicOverrides) ||
                queryButtonText(optionsManager.overrides) || // constructor-specified buttonText lookup hash takes precedence
                viewDef.overrides.buttonText,
            buttonTextDefault: queryButtonText(optionsManager.localeDefaults) ||
                queryButtonText(optionsManager.dirDefaults) ||
                viewDef.defaults.buttonText ||
                queryButtonText(globalDefaults) ||
                viewDef.type // fall back to given view name
        };
    }

    var Toolbar = /** @class */ (function (_super) {
        __extends(Toolbar, _super);
        function Toolbar(extraClassName) {
            var _this = _super.call(this) || this;
            _this._renderLayout = memoizeRendering(_this.renderLayout, _this.unrenderLayout);
            _this._updateTitle = memoizeRendering(_this.updateTitle, null, [_this._renderLayout]);
            _this._updateActiveButton = memoizeRendering(_this.updateActiveButton, null, [_this._renderLayout]);
            _this._updateToday = memoizeRendering(_this.updateToday, null, [_this._renderLayout]);
            _this._updatePrev = memoizeRendering(_this.updatePrev, null, [_this._renderLayout]);
            _this._updateNext = memoizeRendering(_this.updateNext, null, [_this._renderLayout]);
            _this.el = createElement('div', { className: 'fc-toolbar ' + extraClassName });
            return _this;
        }
        Toolbar.prototype.destroy = function () {
            _super.prototype.destroy.call(this);
            this._renderLayout.unrender(); // should unrender everything else
            removeElement(this.el);
        };
        Toolbar.prototype.render = function (props) {
            this._renderLayout(props.layout);
            this._updateTitle(props.title);
            this._updateActiveButton(props.activeButton);
            this._updateToday(props.isTodayEnabled);
            this._updatePrev(props.isPrevEnabled);
            this._updateNext(props.isNextEnabled);
        };
        Toolbar.prototype.renderLayout = function (layout) {
            var el = this.el;
            this.viewsWithButtons = [];
            appendToElement(el, this.renderSection('left', layout.left));
            appendToElement(el, this.renderSection('center', layout.center));
            appendToElement(el, this.renderSection('right', layout.right));
        };
        Toolbar.prototype.unrenderLayout = function () {
            this.el.innerHTML = '';
        };
        Toolbar.prototype.renderSection = function (position, buttonStr) {
            var _this = this;
            var _a = this.context, theme = _a.theme, calendar = _a.calendar;
            var optionsManager = calendar.optionsManager;
            var viewSpecs = calendar.viewSpecs;
            var sectionEl = createElement('div', { className: 'fc-' + position });
            var calendarCustomButtons = optionsManager.computed.customButtons || {};
            var calendarButtonTextOverrides = optionsManager.overrides.buttonText || {};
            var calendarButtonText = optionsManager.computed.buttonText || {};
            if (buttonStr) {
                buttonStr.split(' ').forEach(function (buttonGroupStr, i) {
                    var groupChildren = [];
                    var isOnlyButtons = true;
                    var groupEl;
                    buttonGroupStr.split(',').forEach(function (buttonName, j) {
                        var customButtonProps;
                        var viewSpec;
                        var buttonClick;
                        var buttonIcon; // only one of these will be set
                        var buttonText; // "
                        var buttonInnerHtml;
                        var buttonClasses;
                        var buttonEl;
                        var buttonAriaAttr;
                        if (buttonName === 'title') {
                            groupChildren.push(htmlToElement('<h2>&nbsp;</h2>')); // we always want it to take up height
                            isOnlyButtons = false;
                        }
                        else {
                            if ((customButtonProps = calendarCustomButtons[buttonName])) {
                                buttonClick = function (ev) {
                                    if (customButtonProps.click) {
                                        customButtonProps.click.call(buttonEl, ev);
                                    }
                                };
                                (buttonIcon = theme.getCustomButtonIconClass(customButtonProps)) ||
                                    (buttonIcon = theme.getIconClass(buttonName)) ||
                                    (buttonText = customButtonProps.text);
                            }
                            else if ((viewSpec = viewSpecs[buttonName])) {
                                _this.viewsWithButtons.push(buttonName);
                                buttonClick = function () {
                                    calendar.changeView(buttonName);
                                };
                                (buttonText = viewSpec.buttonTextOverride) ||
                                    (buttonIcon = theme.getIconClass(buttonName)) ||
                                    (buttonText = viewSpec.buttonTextDefault);
                            }
                            else if (calendar[buttonName]) { // a calendar method
                                buttonClick = function () {
                                    calendar[buttonName]();
                                };
                                (buttonText = calendarButtonTextOverrides[buttonName]) ||
                                    (buttonIcon = theme.getIconClass(buttonName)) ||
                                    (buttonText = calendarButtonText[buttonName]);
                                //            ^ everything else is considered default
                            }
                            if (buttonClick) {
                                buttonClasses = [
                                    'fc-' + buttonName + '-button',
                                    theme.getClass('button')
                                ];
                                if (buttonText) {
                                    buttonInnerHtml = htmlEscape(buttonText);
                                    buttonAriaAttr = '';
                                }
                                else if (buttonIcon) {
                                    buttonInnerHtml = "<span class='" + buttonIcon + "'></span>";
                                    buttonAriaAttr = ' aria-label="' + buttonName + '"';
                                }
                                buttonEl = htmlToElement(// type="button" so that it doesn't submit a form
                                '<button type="button" class="' + buttonClasses.join(' ') + '"' +
                                    buttonAriaAttr +
                                    '>' + buttonInnerHtml + '</button>');
                                buttonEl.addEventListener('click', buttonClick);
                                groupChildren.push(buttonEl);
                            }
                        }
                    });
                    if (groupChildren.length > 1) {
                        groupEl = document.createElement('div');
                        var buttonGroupClassName = theme.getClass('buttonGroup');
                        if (isOnlyButtons && buttonGroupClassName) {
                            groupEl.classList.add(buttonGroupClassName);
                        }
                        appendToElement(groupEl, groupChildren);
                        sectionEl.appendChild(groupEl);
                    }
                    else {
                        appendToElement(sectionEl, groupChildren); // 1 or 0 children
                    }
                });
            }
            return sectionEl;
        };
        Toolbar.prototype.updateToday = function (isTodayEnabled) {
            this.toggleButtonEnabled('today', isTodayEnabled);
        };
        Toolbar.prototype.updatePrev = function (isPrevEnabled) {
            this.toggleButtonEnabled('prev', isPrevEnabled);
        };
        Toolbar.prototype.updateNext = function (isNextEnabled) {
            this.toggleButtonEnabled('next', isNextEnabled);
        };
        Toolbar.prototype.updateTitle = function (text) {
            findElements(this.el, 'h2').forEach(function (titleEl) {
                titleEl.innerText = text;
            });
        };
        Toolbar.prototype.updateActiveButton = function (buttonName) {
            var theme = this.context.theme;
            var className = theme.getClass('buttonActive');
            findElements(this.el, 'button').forEach(function (buttonEl) {
                if (buttonName && buttonEl.classList.contains('fc-' + buttonName + '-button')) {
                    buttonEl.classList.add(className);
                }
                else {
                    buttonEl.classList.remove(className);
                }
            });
        };
        Toolbar.prototype.toggleButtonEnabled = function (buttonName, bool) {
            findElements(this.el, '.fc-' + buttonName + '-button').forEach(function (buttonEl) {
                buttonEl.disabled = !bool;
            });
        };
        return Toolbar;
    }(Component));

    var CalendarComponent = /** @class */ (function (_super) {
        __extends(CalendarComponent, _super);
        function CalendarComponent(el) {
            var _this = _super.call(this) || this;
            _this.elClassNames = [];
            _this.renderSkeleton = memoizeRendering(_this._renderSkeleton, _this._unrenderSkeleton);
            _this.renderToolbars = memoizeRendering(_this._renderToolbars, _this._unrenderToolbars, [_this.renderSkeleton]);
            _this.buildComponentContext = memoize(buildComponentContext);
            _this.buildViewPropTransformers = memoize(buildViewPropTransformers);
            _this.el = el;
            _this.computeTitle = memoize(computeTitle);
            _this.parseBusinessHours = memoize(function (input) {
                return parseBusinessHours(input, _this.context.calendar);
            });
            return _this;
        }
        CalendarComponent.prototype.render = function (props, context) {
            this.freezeHeight();
            var title = this.computeTitle(props.dateProfile, props.viewSpec.options);
            this.renderSkeleton(context);
            this.renderToolbars(props.viewSpec, props.dateProfile, props.currentDate, title);
            this.renderView(props, title);
            this.updateSize();
            this.thawHeight();
        };
        CalendarComponent.prototype.destroy = function () {
            if (this.header) {
                this.header.destroy();
            }
            if (this.footer) {
                this.footer.destroy();
            }
            this.renderSkeleton.unrender(); // will call destroyView
            _super.prototype.destroy.call(this);
        };
        CalendarComponent.prototype._renderSkeleton = function (context) {
            this.updateElClassNames(context);
            prependToElement(this.el, this.contentEl = createElement('div', { className: 'fc-view-container' }));
            var calendar = context.calendar;
            for (var _i = 0, _a = calendar.pluginSystem.hooks.viewContainerModifiers; _i < _a.length; _i++) {
                var modifyViewContainer = _a[_i];
                modifyViewContainer(this.contentEl, calendar);
            }
        };
        CalendarComponent.prototype._unrenderSkeleton = function () {
            // weird to have this here
            if (this.view) {
                this.savedScroll = this.view.queryScroll();
                this.view.destroy();
                this.view = null;
            }
            removeElement(this.contentEl);
            this.removeElClassNames();
        };
        CalendarComponent.prototype.removeElClassNames = function () {
            var classList = this.el.classList;
            for (var _i = 0, _a = this.elClassNames; _i < _a.length; _i++) {
                var className = _a[_i];
                classList.remove(className);
            }
            this.elClassNames = [];
        };
        CalendarComponent.prototype.updateElClassNames = function (context) {
            this.removeElClassNames();
            var theme = context.theme, options = context.options;
            this.elClassNames = [
                'fc',
                'fc-' + options.dir,
                theme.getClass('widget')
            ];
            var classList = this.el.classList;
            for (var _i = 0, _a = this.elClassNames; _i < _a.length; _i++) {
                var className = _a[_i];
                classList.add(className);
            }
        };
        CalendarComponent.prototype._renderToolbars = function (viewSpec, dateProfile, currentDate, title) {
            var _a = this, context = _a.context, header = _a.header, footer = _a.footer;
            var options = context.options, calendar = context.calendar;
            var headerLayout = options.header;
            var footerLayout = options.footer;
            var dateProfileGenerator = this.props.dateProfileGenerator;
            var now = calendar.getNow();
            var todayInfo = dateProfileGenerator.build(now);
            var prevInfo = dateProfileGenerator.buildPrev(dateProfile, currentDate);
            var nextInfo = dateProfileGenerator.buildNext(dateProfile, currentDate);
            var toolbarProps = {
                title: title,
                activeButton: viewSpec.type,
                isTodayEnabled: todayInfo.isValid && !rangeContainsMarker(dateProfile.currentRange, now),
                isPrevEnabled: prevInfo.isValid,
                isNextEnabled: nextInfo.isValid
            };
            if (headerLayout) {
                if (!header) {
                    header = this.header = new Toolbar('fc-header-toolbar');
                    prependToElement(this.el, header.el);
                }
                header.receiveProps(__assign({ layout: headerLayout }, toolbarProps), context);
            }
            else if (header) {
                header.destroy();
                header = this.header = null;
            }
            if (footerLayout) {
                if (!footer) {
                    footer = this.footer = new Toolbar('fc-footer-toolbar');
                    appendToElement(this.el, footer.el);
                }
                footer.receiveProps(__assign({ layout: footerLayout }, toolbarProps), context);
            }
            else if (footer) {
                footer.destroy();
                footer = this.footer = null;
            }
        };
        CalendarComponent.prototype._unrenderToolbars = function () {
            if (this.header) {
                this.header.destroy();
                this.header = null;
            }
            if (this.footer) {
                this.footer.destroy();
                this.footer = null;
            }
        };
        CalendarComponent.prototype.renderView = function (props, title) {
            var view = this.view;
            var _a = this.context, calendar = _a.calendar, options = _a.options;
            var viewSpec = props.viewSpec, dateProfileGenerator = props.dateProfileGenerator;
            if (!view || view.viewSpec !== viewSpec) {
                if (view) {
                    view.destroy();
                }
                view = this.view = new viewSpec['class'](viewSpec, this.contentEl);
                if (this.savedScroll) {
                    view.addScroll(this.savedScroll, true);
                    this.savedScroll = null;
                }
            }
            view.title = title; // for the API
            var viewProps = {
                dateProfileGenerator: dateProfileGenerator,
                dateProfile: props.dateProfile,
                businessHours: this.parseBusinessHours(viewSpec.options.businessHours),
                eventStore: props.eventStore,
                eventUiBases: props.eventUiBases,
                dateSelection: props.dateSelection,
                eventSelection: props.eventSelection,
                eventDrag: props.eventDrag,
                eventResize: props.eventResize
            };
            var transformers = this.buildViewPropTransformers(calendar.pluginSystem.hooks.viewPropsTransformers);
            for (var _i = 0, transformers_1 = transformers; _i < transformers_1.length; _i++) {
                var transformer = transformers_1[_i];
                __assign(viewProps, transformer.transform(viewProps, viewSpec, props, options));
            }
            view.receiveProps(viewProps, this.buildComponentContext(this.context, viewSpec, view));
        };
        // Sizing
        // -----------------------------------------------------------------------------------------------------------------
        CalendarComponent.prototype.updateSize = function (isResize) {
            if (isResize === void 0) { isResize = false; }
            var view = this.view;
            if (!view) {
                return; // why?
            }
            if (isResize || this.isHeightAuto == null) {
                this.computeHeightVars();
            }
            view.updateSize(isResize, this.viewHeight, this.isHeightAuto);
            view.updateNowIndicator(); // we need to guarantee this will run after updateSize
            view.popScroll(isResize);
        };
        CalendarComponent.prototype.computeHeightVars = function () {
            var calendar = this.context.calendar; // yuck. need to handle dynamic options
            var heightInput = calendar.opt('height');
            var contentHeightInput = calendar.opt('contentHeight');
            this.isHeightAuto = heightInput === 'auto' || contentHeightInput === 'auto';
            if (typeof contentHeightInput === 'number') { // exists and not 'auto'
                this.viewHeight = contentHeightInput;
            }
            else if (typeof contentHeightInput === 'function') { // exists and is a function
                this.viewHeight = contentHeightInput();
            }
            else if (typeof heightInput === 'number') { // exists and not 'auto'
                this.viewHeight = heightInput - this.queryToolbarsHeight();
            }
            else if (typeof heightInput === 'function') { // exists and is a function
                this.viewHeight = heightInput() - this.queryToolbarsHeight();
            }
            else if (heightInput === 'parent') { // set to height of parent element
                var parentEl = this.el.parentNode;
                this.viewHeight = parentEl.getBoundingClientRect().height - this.queryToolbarsHeight();
            }
            else {
                this.viewHeight = Math.round(this.contentEl.getBoundingClientRect().width /
                    Math.max(calendar.opt('aspectRatio'), .5));
            }
        };
        CalendarComponent.prototype.queryToolbarsHeight = function () {
            var height = 0;
            if (this.header) {
                height += computeHeightAndMargins(this.header.el);
            }
            if (this.footer) {
                height += computeHeightAndMargins(this.footer.el);
            }
            return height;
        };
        // Height "Freezing"
        // -----------------------------------------------------------------------------------------------------------------
        CalendarComponent.prototype.freezeHeight = function () {
            applyStyle(this.el, {
                height: this.el.getBoundingClientRect().height,
                overflow: 'hidden'
            });
        };
        CalendarComponent.prototype.thawHeight = function () {
            applyStyle(this.el, {
                height: '',
                overflow: ''
            });
        };
        return CalendarComponent;
    }(Component));
    // Title and Date Formatting
    // -----------------------------------------------------------------------------------------------------------------
    // Computes what the title at the top of the calendar should be for this view
    function computeTitle(dateProfile, viewOptions) {
        var range;
        // for views that span a large unit of time, show the proper interval, ignoring stray days before and after
        if (/^(year|month)$/.test(dateProfile.currentRangeUnit)) {
            range = dateProfile.currentRange;
        }
        else { // for day units or smaller, use the actual day range
            range = dateProfile.activeRange;
        }
        return this.context.dateEnv.formatRange(range.start, range.end, createFormatter(viewOptions.titleFormat || computeTitleFormat(dateProfile), viewOptions.titleRangeSeparator), { isEndExclusive: dateProfile.isRangeAllDay });
    }
    // Generates the format string that should be used to generate the title for the current date range.
    // Attempts to compute the most appropriate format if not explicitly specified with `titleFormat`.
    function computeTitleFormat(dateProfile) {
        var currentRangeUnit = dateProfile.currentRangeUnit;
        if (currentRangeUnit === 'year') {
            return { year: 'numeric' };
        }
        else if (currentRangeUnit === 'month') {
            return { year: 'numeric', month: 'long' }; // like "September 2014"
        }
        else {
            var days = diffWholeDays(dateProfile.currentRange.start, dateProfile.currentRange.end);
            if (days !== null && days > 1) {
                // multi-day range. shorter, like "Sep 9 - 10 2014"
                return { year: 'numeric', month: 'short', day: 'numeric' };
            }
            else {
                // one day. longer, like "September 9 2014"
                return { year: 'numeric', month: 'long', day: 'numeric' };
            }
        }
    }
    // build a context scoped to the view
    function buildComponentContext(context, viewSpec, view) {
        return context.extend(viewSpec.options, view);
    }
    // Plugin
    // -----------------------------------------------------------------------------------------------------------------
    function buildViewPropTransformers(theClasses) {
        return theClasses.map(function (theClass) {
            return new theClass();
        });
    }

    var Interaction = /** @class */ (function () {
        function Interaction(settings) {
            this.component = settings.component;
        }
        Interaction.prototype.destroy = function () {
        };
        return Interaction;
    }());
    function parseInteractionSettings(component, input) {
        return {
            component: component,
            el: input.el,
            useEventCenter: input.useEventCenter != null ? input.useEventCenter : true
        };
    }
    function interactionSettingsToStore(settings) {
        var _a;
        return _a = {},
            _a[settings.component.uid] = settings,
            _a;
    }
    // global state
    var interactionSettingsStore = {};

    /*
    Detects when the user clicks on an event within a DateComponent
    */
    var EventClicking = /** @class */ (function (_super) {
        __extends(EventClicking, _super);
        function EventClicking(settings) {
            var _this = _super.call(this, settings) || this;
            _this.handleSegClick = function (ev, segEl) {
                var component = _this.component;
                var _a = component.context, calendar = _a.calendar, view = _a.view;
                var seg = getElSeg(segEl);
                if (seg && // might be the <div> surrounding the more link
                    component.isValidSegDownEl(ev.target)) {
                    // our way to simulate a link click for elements that can't be <a> tags
                    // grab before trigger fired in case trigger trashes DOM thru rerendering
                    var hasUrlContainer = elementClosest(ev.target, '.fc-has-url');
                    var url = hasUrlContainer ? hasUrlContainer.querySelector('a[href]').href : '';
                    calendar.publiclyTrigger('eventClick', [
                        {
                            el: segEl,
                            event: new EventApi(component.context.calendar, seg.eventRange.def, seg.eventRange.instance),
                            jsEvent: ev,
                            view: view
                        }
                    ]);
                    if (url && !ev.defaultPrevented) {
                        window.location.href = url;
                    }
                }
            };
            var component = settings.component;
            _this.destroy = listenBySelector(component.el, 'click', component.fgSegSelector + ',' + component.bgSegSelector, _this.handleSegClick);
            return _this;
        }
        return EventClicking;
    }(Interaction));

    /*
    Triggers events and adds/removes core classNames when the user's pointer
    enters/leaves event-elements of a component.
    */
    var EventHovering = /** @class */ (function (_super) {
        __extends(EventHovering, _super);
        function EventHovering(settings) {
            var _this = _super.call(this, settings) || this;
            // for simulating an eventMouseLeave when the event el is destroyed while mouse is over it
            _this.handleEventElRemove = function (el) {
                if (el === _this.currentSegEl) {
                    _this.handleSegLeave(null, _this.currentSegEl);
                }
            };
            _this.handleSegEnter = function (ev, segEl) {
                if (getElSeg(segEl)) { // TODO: better way to make sure not hovering over more+ link or its wrapper
                    segEl.classList.add('fc-allow-mouse-resize');
                    _this.currentSegEl = segEl;
                    _this.triggerEvent('eventMouseEnter', ev, segEl);
                }
            };
            _this.handleSegLeave = function (ev, segEl) {
                if (_this.currentSegEl) {
                    segEl.classList.remove('fc-allow-mouse-resize');
                    _this.currentSegEl = null;
                    _this.triggerEvent('eventMouseLeave', ev, segEl);
                }
            };
            var component = settings.component;
            _this.removeHoverListeners = listenToHoverBySelector(component.el, component.fgSegSelector + ',' + component.bgSegSelector, _this.handleSegEnter, _this.handleSegLeave);
            // how to make sure component already has context?
            component.context.calendar.on('eventElRemove', _this.handleEventElRemove);
            return _this;
        }
        EventHovering.prototype.destroy = function () {
            this.removeHoverListeners();
            this.component.context.calendar.off('eventElRemove', this.handleEventElRemove);
        };
        EventHovering.prototype.triggerEvent = function (publicEvName, ev, segEl) {
            var component = this.component;
            var _a = component.context, calendar = _a.calendar, view = _a.view;
            var seg = getElSeg(segEl);
            if (!ev || component.isValidSegDownEl(ev.target)) {
                calendar.publiclyTrigger(publicEvName, [
                    {
                        el: segEl,
                        event: new EventApi(calendar, seg.eventRange.def, seg.eventRange.instance),
                        jsEvent: ev,
                        view: view
                    }
                ]);
            }
        };
        return EventHovering;
    }(Interaction));

    var StandardTheme = /** @class */ (function (_super) {
        __extends(StandardTheme, _super);
        function StandardTheme() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        return StandardTheme;
    }(Theme));
    StandardTheme.prototype.classes = {
        widget: 'fc-unthemed',
        widgetHeader: 'fc-widget-header',
        widgetContent: 'fc-widget-content',
        buttonGroup: 'fc-button-group',
        button: 'fc-button fc-button-primary',
        buttonActive: 'fc-button-active',
        popoverHeader: 'fc-widget-header',
        popoverContent: 'fc-widget-content',
        // day grid
        headerRow: 'fc-widget-header',
        dayRow: 'fc-widget-content',
        // list view
        listView: 'fc-widget-content'
    };
    StandardTheme.prototype.baseIconClass = 'fc-icon';
    StandardTheme.prototype.iconClasses = {
        close: 'fc-icon-x',
        prev: 'fc-icon-chevron-left',
        next: 'fc-icon-chevron-right',
        prevYear: 'fc-icon-chevrons-left',
        nextYear: 'fc-icon-chevrons-right'
    };
    StandardTheme.prototype.iconOverrideOption = 'buttonIcons';
    StandardTheme.prototype.iconOverrideCustomButtonOption = 'icon';
    StandardTheme.prototype.iconOverridePrefix = 'fc-icon-';

    var Calendar = /** @class */ (function () {
        function Calendar(el, overrides) {
            var _this = this;
            this.buildComponentContext = memoize(buildComponentContext$1);
            this.parseRawLocales = memoize(parseRawLocales);
            this.buildLocale = memoize(buildLocale);
            this.buildDateEnv = memoize(buildDateEnv);
            this.buildTheme = memoize(buildTheme);
            this.buildEventUiSingleBase = memoize(this._buildEventUiSingleBase);
            this.buildSelectionConfig = memoize(this._buildSelectionConfig);
            this.buildEventUiBySource = memoizeOutput(buildEventUiBySource, isPropsEqual);
            this.buildEventUiBases = memoize(buildEventUiBases);
            this.interactionsStore = {};
            this.actionQueue = [];
            this.isReducing = false;
            // isDisplaying: boolean = false // installed in DOM? accepting renders?
            this.needsRerender = false; // needs a render?
            this.isRendering = false; // currently in the executeRender function?
            this.renderingPauseDepth = 0;
            this.buildDelayedRerender = memoize(buildDelayedRerender);
            this.afterSizingTriggers = {};
            this.isViewUpdated = false;
            this.isDatesUpdated = false;
            this.isEventsUpdated = false;
            this.el = el;
            this.optionsManager = new OptionsManager(overrides || {});
            this.pluginSystem = new PluginSystem();
            // only do once. don't do in handleOptions. because can't remove plugins
            this.addPluginInputs(this.optionsManager.computed.plugins || []);
            this.handleOptions(this.optionsManager.computed);
            this.publiclyTrigger('_init'); // for tests
            this.hydrate();
            this.calendarInteractions = this.pluginSystem.hooks.calendarInteractions
                .map(function (calendarInteractionClass) {
                return new calendarInteractionClass(_this);
            });
        }
        Calendar.prototype.addPluginInputs = function (pluginInputs) {
            var pluginDefs = refinePluginDefs(pluginInputs);
            for (var _i = 0, pluginDefs_1 = pluginDefs; _i < pluginDefs_1.length; _i++) {
                var pluginDef = pluginDefs_1[_i];
                this.pluginSystem.add(pluginDef);
            }
        };
        Object.defineProperty(Calendar.prototype, "view", {
            // public API
            get: function () {
                return this.component ? this.component.view : null;
            },
            enumerable: true,
            configurable: true
        });
        // Public API for rendering
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.render = function () {
            if (!this.component) {
                this.component = new CalendarComponent(this.el);
                this.renderableEventStore = createEmptyEventStore();
                this.bindHandlers();
                this.executeRender();
            }
            else {
                this.requestRerender();
            }
        };
        Calendar.prototype.destroy = function () {
            if (this.component) {
                this.unbindHandlers();
                this.component.destroy(); // don't null-out. in case API needs access
                this.component = null; // umm ???
                for (var _i = 0, _a = this.calendarInteractions; _i < _a.length; _i++) {
                    var interaction = _a[_i];
                    interaction.destroy();
                }
                this.publiclyTrigger('_destroyed');
            }
        };
        // Handlers
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.bindHandlers = function () {
            var _this = this;
            // event delegation for nav links
            this.removeNavLinkListener = listenBySelector(this.el, 'click', 'a[data-goto]', function (ev, anchorEl) {
                var gotoOptions = anchorEl.getAttribute('data-goto');
                gotoOptions = gotoOptions ? JSON.parse(gotoOptions) : {};
                var dateEnv = _this.dateEnv;
                var dateMarker = dateEnv.createMarker(gotoOptions.date);
                var viewType = gotoOptions.type;
                // property like "navLinkDayClick". might be a string or a function
                var customAction = _this.viewOpt('navLink' + capitaliseFirstLetter(viewType) + 'Click');
                if (typeof customAction === 'function') {
                    customAction(dateEnv.toDate(dateMarker), ev);
                }
                else {
                    if (typeof customAction === 'string') {
                        viewType = customAction;
                    }
                    _this.zoomTo(dateMarker, viewType);
                }
            });
            if (this.opt('handleWindowResize')) {
                window.addEventListener('resize', this.windowResizeProxy = debounce(// prevents rapid calls
                this.windowResize.bind(this), this.opt('windowResizeDelay')));
            }
        };
        Calendar.prototype.unbindHandlers = function () {
            this.removeNavLinkListener();
            if (this.windowResizeProxy) {
                window.removeEventListener('resize', this.windowResizeProxy);
                this.windowResizeProxy = null;
            }
        };
        // Dispatcher
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.hydrate = function () {
            var _this = this;
            this.state = this.buildInitialState();
            var rawSources = this.opt('eventSources') || [];
            var singleRawSource = this.opt('events');
            var sources = []; // parsed
            if (singleRawSource) {
                rawSources.unshift(singleRawSource);
            }
            for (var _i = 0, rawSources_1 = rawSources; _i < rawSources_1.length; _i++) {
                var rawSource = rawSources_1[_i];
                var source = parseEventSource(rawSource, this);
                if (source) {
                    sources.push(source);
                }
            }
            this.batchRendering(function () {
                _this.dispatch({ type: 'INIT' }); // pass in sources here?
                _this.dispatch({ type: 'ADD_EVENT_SOURCES', sources: sources });
                _this.dispatch({
                    type: 'SET_VIEW_TYPE',
                    viewType: _this.opt('defaultView') || _this.pluginSystem.hooks.defaultView
                });
            });
        };
        Calendar.prototype.buildInitialState = function () {
            return {
                viewType: null,
                loadingLevel: 0,
                eventSourceLoadingLevel: 0,
                currentDate: this.getInitialDate(),
                dateProfile: null,
                eventSources: {},
                eventStore: createEmptyEventStore(),
                dateSelection: null,
                eventSelection: '',
                eventDrag: null,
                eventResize: null
            };
        };
        Calendar.prototype.dispatch = function (action) {
            this.actionQueue.push(action);
            if (!this.isReducing) {
                this.isReducing = true;
                var oldState = this.state;
                while (this.actionQueue.length) {
                    this.state = this.reduce(this.state, this.actionQueue.shift(), this);
                }
                var newState = this.state;
                this.isReducing = false;
                if (!oldState.loadingLevel && newState.loadingLevel) {
                    this.publiclyTrigger('loading', [true]);
                }
                else if (oldState.loadingLevel && !newState.loadingLevel) {
                    this.publiclyTrigger('loading', [false]);
                }
                var view = this.component && this.component.view;
                if (oldState.eventStore !== newState.eventStore) {
                    if (oldState.eventStore) {
                        this.isEventsUpdated = true;
                    }
                }
                if (oldState.dateProfile !== newState.dateProfile) {
                    if (oldState.dateProfile && view) { // why would view be null!?
                        this.publiclyTrigger('datesDestroy', [
                            {
                                view: view,
                                el: view.el
                            }
                        ]);
                    }
                    this.isDatesUpdated = true;
                }
                if (oldState.viewType !== newState.viewType) {
                    if (oldState.viewType && view) { // why would view be null!?
                        this.publiclyTrigger('viewSkeletonDestroy', [
                            {
                                view: view,
                                el: view.el
                            }
                        ]);
                    }
                    this.isViewUpdated = true;
                }
                this.requestRerender();
            }
        };
        Calendar.prototype.reduce = function (state, action, calendar) {
            return reduce(state, action, calendar);
        };
        // Render Queue
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.requestRerender = function () {
            this.needsRerender = true;
            this.delayedRerender(); // will call a debounced-version of tryRerender
        };
        Calendar.prototype.tryRerender = function () {
            if (this.component && // must be accepting renders
                this.needsRerender && // indicates that a rerender was requested
                !this.renderingPauseDepth && // not paused
                !this.isRendering // not currently in the render loop
            ) {
                this.executeRender();
            }
        };
        Calendar.prototype.batchRendering = function (func) {
            this.renderingPauseDepth++;
            func();
            this.renderingPauseDepth--;
            if (this.needsRerender) {
                this.requestRerender();
            }
        };
        // Rendering
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.executeRender = function () {
            // clear these BEFORE the render so that new values will accumulate during render
            this.needsRerender = false;
            this.isRendering = true;
            this.renderComponent();
            this.isRendering = false;
            // received a rerender request while rendering
            if (this.needsRerender) {
                this.delayedRerender();
            }
        };
        /*
        don't call this directly. use executeRender instead
        */
        Calendar.prototype.renderComponent = function () {
            var _a = this, state = _a.state, component = _a.component;
            var viewType = state.viewType;
            var viewSpec = this.viewSpecs[viewType];
            if (!viewSpec) {
                throw new Error("View type \"" + viewType + "\" is not valid");
            }
            // if event sources are still loading and progressive rendering hasn't been enabled,
            // keep rendering the last fully loaded set of events
            var renderableEventStore = this.renderableEventStore =
                (state.eventSourceLoadingLevel && !this.opt('progressiveEventRendering')) ?
                    this.renderableEventStore :
                    state.eventStore;
            var eventUiSingleBase = this.buildEventUiSingleBase(viewSpec.options);
            var eventUiBySource = this.buildEventUiBySource(state.eventSources);
            var eventUiBases = this.eventUiBases = this.buildEventUiBases(renderableEventStore.defs, eventUiSingleBase, eventUiBySource);
            component.receiveProps(__assign({}, state, { viewSpec: viewSpec, dateProfileGenerator: this.dateProfileGenerators[viewType], dateProfile: state.dateProfile, eventStore: renderableEventStore, eventUiBases: eventUiBases, dateSelection: state.dateSelection, eventSelection: state.eventSelection, eventDrag: state.eventDrag, eventResize: state.eventResize }), this.buildComponentContext(this.theme, this.dateEnv, this.optionsManager.computed));
            if (this.isViewUpdated) {
                this.isViewUpdated = false;
                this.publiclyTrigger('viewSkeletonRender', [
                    {
                        view: component.view,
                        el: component.view.el
                    }
                ]);
            }
            if (this.isDatesUpdated) {
                this.isDatesUpdated = false;
                this.publiclyTrigger('datesRender', [
                    {
                        view: component.view,
                        el: component.view.el
                    }
                ]);
            }
            if (this.isEventsUpdated) {
                this.isEventsUpdated = false;
            }
            this.releaseAfterSizingTriggers();
        };
        // Options
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.setOption = function (name, val) {
            var _a;
            this.mutateOptions((_a = {}, _a[name] = val, _a), [], true);
        };
        Calendar.prototype.getOption = function (name) {
            return this.optionsManager.computed[name];
        };
        Calendar.prototype.opt = function (name) {
            return this.optionsManager.computed[name];
        };
        Calendar.prototype.viewOpt = function (name) {
            return this.viewOpts()[name];
        };
        Calendar.prototype.viewOpts = function () {
            return this.viewSpecs[this.state.viewType].options;
        };
        /*
        handles option changes (like a diff)
        */
        Calendar.prototype.mutateOptions = function (updates, removals, isDynamic, deepEqual) {
            var _this = this;
            var changeHandlers = this.pluginSystem.hooks.optionChangeHandlers;
            var normalUpdates = {};
            var specialUpdates = {};
            var oldDateEnv = this.dateEnv; // do this before handleOptions
            var isTimeZoneDirty = false;
            var isSizeDirty = false;
            var anyDifficultOptions = Boolean(removals.length);
            for (var name_1 in updates) {
                if (changeHandlers[name_1]) {
                    specialUpdates[name_1] = updates[name_1];
                }
                else {
                    normalUpdates[name_1] = updates[name_1];
                }
            }
            for (var name_2 in normalUpdates) {
                if (/^(height|contentHeight|aspectRatio)$/.test(name_2)) {
                    isSizeDirty = true;
                }
                else if (/^(defaultDate|defaultView)$/.test(name_2)) ;
                else {
                    anyDifficultOptions = true;
                    if (name_2 === 'timeZone') {
                        isTimeZoneDirty = true;
                    }
                }
            }
            this.optionsManager.mutate(normalUpdates, removals, isDynamic);
            if (anyDifficultOptions) {
                this.handleOptions(this.optionsManager.computed);
            }
            this.batchRendering(function () {
                if (anyDifficultOptions) {
                    if (isTimeZoneDirty) {
                        _this.dispatch({
                            type: 'CHANGE_TIMEZONE',
                            oldDateEnv: oldDateEnv
                        });
                    }
                    /* HACK
                    has the same effect as calling this.requestRerender()
                    but recomputes the state's dateProfile
                    */
                    _this.dispatch({
                        type: 'SET_VIEW_TYPE',
                        viewType: _this.state.viewType
                    });
                }
                else if (isSizeDirty) {
                    _this.updateSize();
                }
                // special updates
                if (deepEqual) {
                    for (var name_3 in specialUpdates) {
                        changeHandlers[name_3](specialUpdates[name_3], _this, deepEqual);
                    }
                }
            });
        };
        /*
        rebuilds things based off of a complete set of refined options
        */
        Calendar.prototype.handleOptions = function (options) {
            var _this = this;
            var pluginHooks = this.pluginSystem.hooks;
            this.defaultAllDayEventDuration = createDuration(options.defaultAllDayEventDuration);
            this.defaultTimedEventDuration = createDuration(options.defaultTimedEventDuration);
            this.delayedRerender = this.buildDelayedRerender(options.rerenderDelay);
            this.theme = this.buildTheme(options);
            var available = this.parseRawLocales(options.locales);
            this.availableRawLocales = available.map;
            var locale = this.buildLocale(options.locale || available.defaultCode, available.map);
            this.dateEnv = this.buildDateEnv(locale, options.timeZone, pluginHooks.namedTimeZonedImpl, options.firstDay, options.weekNumberCalculation, options.weekLabel, pluginHooks.cmdFormatter);
            this.selectionConfig = this.buildSelectionConfig(options); // needs dateEnv. do after :(
            // ineffecient to do every time?
            this.viewSpecs = buildViewSpecs(pluginHooks.views, this.optionsManager);
            // ineffecient to do every time?
            this.dateProfileGenerators = mapHash(this.viewSpecs, function (viewSpec) {
                return new viewSpec.class.prototype.dateProfileGeneratorClass(viewSpec, _this);
            });
        };
        Calendar.prototype.getAvailableLocaleCodes = function () {
            return Object.keys(this.availableRawLocales);
        };
        Calendar.prototype._buildSelectionConfig = function (rawOpts) {
            return processScopedUiProps('select', rawOpts, this);
        };
        Calendar.prototype._buildEventUiSingleBase = function (rawOpts) {
            if (rawOpts.editable) { // so 'editable' affected events
                rawOpts = __assign({}, rawOpts, { eventEditable: true });
            }
            return processScopedUiProps('event', rawOpts, this);
        };
        // Trigger
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.hasPublicHandlers = function (name) {
            return this.hasHandlers(name) ||
                this.opt(name); // handler specified in options
        };
        Calendar.prototype.publiclyTrigger = function (name, args) {
            var optHandler = this.opt(name);
            this.triggerWith(name, this, args);
            if (optHandler) {
                return optHandler.apply(this, args);
            }
        };
        Calendar.prototype.publiclyTriggerAfterSizing = function (name, args) {
            var afterSizingTriggers = this.afterSizingTriggers;
            (afterSizingTriggers[name] || (afterSizingTriggers[name] = [])).push(args);
        };
        Calendar.prototype.releaseAfterSizingTriggers = function () {
            var afterSizingTriggers = this.afterSizingTriggers;
            for (var name_4 in afterSizingTriggers) {
                for (var _i = 0, _a = afterSizingTriggers[name_4]; _i < _a.length; _i++) {
                    var args = _a[_i];
                    this.publiclyTrigger(name_4, args);
                }
            }
            this.afterSizingTriggers = {};
        };
        // View
        // -----------------------------------------------------------------------------------------------------------------
        // Returns a boolean about whether the view is okay to instantiate at some point
        Calendar.prototype.isValidViewType = function (viewType) {
            return Boolean(this.viewSpecs[viewType]);
        };
        Calendar.prototype.changeView = function (viewType, dateOrRange) {
            var dateMarker = null;
            if (dateOrRange) {
                if (dateOrRange.start && dateOrRange.end) { // a range
                    this.optionsManager.mutate({ visibleRange: dateOrRange }, []); // will not rerender
                    this.handleOptions(this.optionsManager.computed); // ...but yuck
                }
                else { // a date
                    dateMarker = this.dateEnv.createMarker(dateOrRange); // just like gotoDate
                }
            }
            this.unselect();
            this.dispatch({
                type: 'SET_VIEW_TYPE',
                viewType: viewType,
                dateMarker: dateMarker
            });
        };
        // Forces navigation to a view for the given date.
        // `viewType` can be a specific view name or a generic one like "week" or "day".
        // needs to change
        Calendar.prototype.zoomTo = function (dateMarker, viewType) {
            var spec;
            viewType = viewType || 'day'; // day is default zoom
            spec = this.viewSpecs[viewType] ||
                this.getUnitViewSpec(viewType);
            this.unselect();
            if (spec) {
                this.dispatch({
                    type: 'SET_VIEW_TYPE',
                    viewType: spec.type,
                    dateMarker: dateMarker
                });
            }
            else {
                this.dispatch({
                    type: 'SET_DATE',
                    dateMarker: dateMarker
                });
            }
        };
        // Given a duration singular unit, like "week" or "day", finds a matching view spec.
        // Preference is given to views that have corresponding buttons.
        Calendar.prototype.getUnitViewSpec = function (unit) {
            var component = this.component;
            var viewTypes = [];
            var i;
            var spec;
            // put views that have buttons first. there will be duplicates, but oh
            if (component.header) {
                viewTypes.push.apply(viewTypes, component.header.viewsWithButtons);
            }
            if (component.footer) {
                viewTypes.push.apply(viewTypes, component.footer.viewsWithButtons);
            }
            for (var viewType in this.viewSpecs) {
                viewTypes.push(viewType);
            }
            for (i = 0; i < viewTypes.length; i++) {
                spec = this.viewSpecs[viewTypes[i]];
                if (spec) {
                    if (spec.singleUnit === unit) {
                        return spec;
                    }
                }
            }
        };
        // Current Date
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.getInitialDate = function () {
            var defaultDateInput = this.opt('defaultDate');
            // compute the initial ambig-timezone date
            if (defaultDateInput != null) {
                return this.dateEnv.createMarker(defaultDateInput);
            }
            else {
                return this.getNow(); // getNow already returns unzoned
            }
        };
        Calendar.prototype.prev = function () {
            this.unselect();
            this.dispatch({ type: 'PREV' });
        };
        Calendar.prototype.next = function () {
            this.unselect();
            this.dispatch({ type: 'NEXT' });
        };
        Calendar.prototype.prevYear = function () {
            this.unselect();
            this.dispatch({
                type: 'SET_DATE',
                dateMarker: this.dateEnv.addYears(this.state.currentDate, -1)
            });
        };
        Calendar.prototype.nextYear = function () {
            this.unselect();
            this.dispatch({
                type: 'SET_DATE',
                dateMarker: this.dateEnv.addYears(this.state.currentDate, 1)
            });
        };
        Calendar.prototype.today = function () {
            this.unselect();
            this.dispatch({
                type: 'SET_DATE',
                dateMarker: this.getNow()
            });
        };
        Calendar.prototype.gotoDate = function (zonedDateInput) {
            this.unselect();
            this.dispatch({
                type: 'SET_DATE',
                dateMarker: this.dateEnv.createMarker(zonedDateInput)
            });
        };
        Calendar.prototype.incrementDate = function (deltaInput) {
            var delta = createDuration(deltaInput);
            if (delta) { // else, warn about invalid input?
                this.unselect();
                this.dispatch({
                    type: 'SET_DATE',
                    dateMarker: this.dateEnv.add(this.state.currentDate, delta)
                });
            }
        };
        // for external API
        Calendar.prototype.getDate = function () {
            return this.dateEnv.toDate(this.state.currentDate);
        };
        // Date Formatting Utils
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.formatDate = function (d, formatter) {
            var dateEnv = this.dateEnv;
            return dateEnv.format(dateEnv.createMarker(d), createFormatter(formatter));
        };
        // `settings` is for formatter AND isEndExclusive
        Calendar.prototype.formatRange = function (d0, d1, settings) {
            var dateEnv = this.dateEnv;
            return dateEnv.formatRange(dateEnv.createMarker(d0), dateEnv.createMarker(d1), createFormatter(settings, this.opt('defaultRangeSeparator')), settings);
        };
        Calendar.prototype.formatIso = function (d, omitTime) {
            var dateEnv = this.dateEnv;
            return dateEnv.formatIso(dateEnv.createMarker(d), { omitTime: omitTime });
        };
        // Sizing
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.windowResize = function (ev) {
            if (!this.isHandlingWindowResize &&
                this.component && // why?
                ev.target === window // not a jqui resize event
            ) {
                this.isHandlingWindowResize = true;
                this.updateSize();
                this.publiclyTrigger('windowResize', [this.view]);
                this.isHandlingWindowResize = false;
            }
        };
        Calendar.prototype.updateSize = function () {
            if (this.component) { // when?
                this.component.updateSize(true);
            }
        };
        // Component Registration
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.registerInteractiveComponent = function (component, settingsInput) {
            var settings = parseInteractionSettings(component, settingsInput);
            var DEFAULT_INTERACTIONS = [
                EventClicking,
                EventHovering
            ];
            var interactionClasses = DEFAULT_INTERACTIONS.concat(this.pluginSystem.hooks.componentInteractions);
            var interactions = interactionClasses.map(function (interactionClass) {
                return new interactionClass(settings);
            });
            this.interactionsStore[component.uid] = interactions;
            interactionSettingsStore[component.uid] = settings;
        };
        Calendar.prototype.unregisterInteractiveComponent = function (component) {
            for (var _i = 0, _a = this.interactionsStore[component.uid]; _i < _a.length; _i++) {
                var listener = _a[_i];
                listener.destroy();
            }
            delete this.interactionsStore[component.uid];
            delete interactionSettingsStore[component.uid];
        };
        // Date Selection / Event Selection / DayClick
        // -----------------------------------------------------------------------------------------------------------------
        // this public method receives start/end dates in any format, with any timezone
        // NOTE: args were changed from v3
        Calendar.prototype.select = function (dateOrObj, endDate) {
            var selectionInput;
            if (endDate == null) {
                if (dateOrObj.start != null) {
                    selectionInput = dateOrObj;
                }
                else {
                    selectionInput = {
                        start: dateOrObj,
                        end: null
                    };
                }
            }
            else {
                selectionInput = {
                    start: dateOrObj,
                    end: endDate
                };
            }
            var selection = parseDateSpan(selectionInput, this.dateEnv, createDuration({ days: 1 }) // TODO: cache this?
            );
            if (selection) { // throw parse error otherwise?
                this.dispatch({ type: 'SELECT_DATES', selection: selection });
                this.triggerDateSelect(selection);
            }
        };
        // public method
        Calendar.prototype.unselect = function (pev) {
            if (this.state.dateSelection) {
                this.dispatch({ type: 'UNSELECT_DATES' });
                this.triggerDateUnselect(pev);
            }
        };
        Calendar.prototype.triggerDateSelect = function (selection, pev) {
            var arg = __assign({}, this.buildDateSpanApi(selection), { jsEvent: pev ? pev.origEvent : null, view: this.view });
            this.publiclyTrigger('select', [arg]);
        };
        Calendar.prototype.triggerDateUnselect = function (pev) {
            this.publiclyTrigger('unselect', [
                {
                    jsEvent: pev ? pev.origEvent : null,
                    view: this.view
                }
            ]);
        };
        // TODO: receive pev?
        Calendar.prototype.triggerDateClick = function (dateSpan, dayEl, view, ev) {
            var arg = __assign({}, this.buildDatePointApi(dateSpan), { dayEl: dayEl, jsEvent: ev, // Is this always a mouse event? See #4655
                view: view });
            this.publiclyTrigger('dateClick', [arg]);
        };
        Calendar.prototype.buildDatePointApi = function (dateSpan) {
            var props = {};
            for (var _i = 0, _a = this.pluginSystem.hooks.datePointTransforms; _i < _a.length; _i++) {
                var transform = _a[_i];
                __assign(props, transform(dateSpan, this));
            }
            __assign(props, buildDatePointApi(dateSpan, this.dateEnv));
            return props;
        };
        Calendar.prototype.buildDateSpanApi = function (dateSpan) {
            var props = {};
            for (var _i = 0, _a = this.pluginSystem.hooks.dateSpanTransforms; _i < _a.length; _i++) {
                var transform = _a[_i];
                __assign(props, transform(dateSpan, this));
            }
            __assign(props, buildDateSpanApi(dateSpan, this.dateEnv));
            return props;
        };
        // Date Utils
        // -----------------------------------------------------------------------------------------------------------------
        // Returns a DateMarker for the current date, as defined by the client's computer or from the `now` option
        Calendar.prototype.getNow = function () {
            var now = this.opt('now');
            if (typeof now === 'function') {
                now = now();
            }
            if (now == null) {
                return this.dateEnv.createNowMarker();
            }
            return this.dateEnv.createMarker(now);
        };
        // Event-Date Utilities
        // -----------------------------------------------------------------------------------------------------------------
        // Given an event's allDay status and start date, return what its fallback end date should be.
        // TODO: rename to computeDefaultEventEnd
        Calendar.prototype.getDefaultEventEnd = function (allDay, marker) {
            var end = marker;
            if (allDay) {
                end = startOfDay(end);
                end = this.dateEnv.add(end, this.defaultAllDayEventDuration);
            }
            else {
                end = this.dateEnv.add(end, this.defaultTimedEventDuration);
            }
            return end;
        };
        // Public Events API
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.addEvent = function (eventInput, sourceInput) {
            if (eventInput instanceof EventApi) {
                var def = eventInput._def;
                var instance = eventInput._instance;
                // not already present? don't want to add an old snapshot
                if (!this.state.eventStore.defs[def.defId]) {
                    this.dispatch({
                        type: 'ADD_EVENTS',
                        eventStore: eventTupleToStore({ def: def, instance: instance }) // TODO: better util for two args?
                    });
                }
                return eventInput;
            }
            var sourceId;
            if (sourceInput instanceof EventSourceApi) {
                sourceId = sourceInput.internalEventSource.sourceId;
            }
            else if (sourceInput != null) {
                var sourceApi = this.getEventSourceById(sourceInput); // TODO: use an internal function
                if (!sourceApi) {
                    console.warn('Could not find an event source with ID "' + sourceInput + '"'); // TODO: test
                    return null;
                }
                else {
                    sourceId = sourceApi.internalEventSource.sourceId;
                }
            }
            var tuple = parseEvent(eventInput, sourceId, this);
            if (tuple) {
                this.dispatch({
                    type: 'ADD_EVENTS',
                    eventStore: eventTupleToStore(tuple)
                });
                return new EventApi(this, tuple.def, tuple.def.recurringDef ? null : tuple.instance);
            }
            return null;
        };
        // TODO: optimize
        Calendar.prototype.getEventById = function (id) {
            var _a = this.state.eventStore, defs = _a.defs, instances = _a.instances;
            id = String(id);
            for (var defId in defs) {
                var def = defs[defId];
                if (def.publicId === id) {
                    if (def.recurringDef) {
                        return new EventApi(this, def, null);
                    }
                    else {
                        for (var instanceId in instances) {
                            var instance = instances[instanceId];
                            if (instance.defId === def.defId) {
                                return new EventApi(this, def, instance);
                            }
                        }
                    }
                }
            }
            return null;
        };
        Calendar.prototype.getEvents = function () {
            var _a = this.state.eventStore, defs = _a.defs, instances = _a.instances;
            var eventApis = [];
            for (var id in instances) {
                var instance = instances[id];
                var def = defs[instance.defId];
                eventApis.push(new EventApi(this, def, instance));
            }
            return eventApis;
        };
        Calendar.prototype.removeAllEvents = function () {
            this.dispatch({ type: 'REMOVE_ALL_EVENTS' });
        };
        Calendar.prototype.rerenderEvents = function () {
            this.dispatch({ type: 'RESET_EVENTS' });
        };
        // Public Event Sources API
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.getEventSources = function () {
            var sourceHash = this.state.eventSources;
            var sourceApis = [];
            for (var internalId in sourceHash) {
                sourceApis.push(new EventSourceApi(this, sourceHash[internalId]));
            }
            return sourceApis;
        };
        Calendar.prototype.getEventSourceById = function (id) {
            var sourceHash = this.state.eventSources;
            id = String(id);
            for (var sourceId in sourceHash) {
                if (sourceHash[sourceId].publicId === id) {
                    return new EventSourceApi(this, sourceHash[sourceId]);
                }
            }
            return null;
        };
        Calendar.prototype.addEventSource = function (sourceInput) {
            if (sourceInput instanceof EventSourceApi) {
                // not already present? don't want to add an old snapshot
                if (!this.state.eventSources[sourceInput.internalEventSource.sourceId]) {
                    this.dispatch({
                        type: 'ADD_EVENT_SOURCES',
                        sources: [sourceInput.internalEventSource]
                    });
                }
                return sourceInput;
            }
            var eventSource = parseEventSource(sourceInput, this);
            if (eventSource) { // TODO: error otherwise?
                this.dispatch({ type: 'ADD_EVENT_SOURCES', sources: [eventSource] });
                return new EventSourceApi(this, eventSource);
            }
            return null;
        };
        Calendar.prototype.removeAllEventSources = function () {
            this.dispatch({ type: 'REMOVE_ALL_EVENT_SOURCES' });
        };
        Calendar.prototype.refetchEvents = function () {
            this.dispatch({ type: 'FETCH_EVENT_SOURCES' });
        };
        // Scroll
        // -----------------------------------------------------------------------------------------------------------------
        Calendar.prototype.scrollToTime = function (timeInput) {
            var duration = createDuration(timeInput);
            if (duration) {
                this.component.view.scrollToDuration(duration);
            }
        };
        return Calendar;
    }());
    EmitterMixin.mixInto(Calendar);
    // for memoizers
    // -----------------------------------------------------------------------------------------------------------------
    function buildComponentContext$1(theme, dateEnv, options) {
        return new ComponentContext(this, theme, dateEnv, options, null);
    }
    function buildDateEnv(locale, timeZone, namedTimeZoneImpl, firstDay, weekNumberCalculation, weekLabel, cmdFormatter) {
        return new DateEnv({
            calendarSystem: 'gregory',
            timeZone: timeZone,
            namedTimeZoneImpl: namedTimeZoneImpl,
            locale: locale,
            weekNumberCalculation: weekNumberCalculation,
            firstDay: firstDay,
            weekLabel: weekLabel,
            cmdFormatter: cmdFormatter
        });
    }
    function buildTheme(calendarOptions) {
        var themeClass = this.pluginSystem.hooks.themeClasses[calendarOptions.themeSystem] || StandardTheme;
        return new themeClass(calendarOptions);
    }
    function buildDelayedRerender(wait) {
        var func = this.tryRerender.bind(this);
        if (wait != null) {
            func = debounce(func, wait);
        }
        return func;
    }
    function buildEventUiBySource(eventSources) {
        return mapHash(eventSources, function (eventSource) {
            return eventSource.ui;
        });
    }
    function buildEventUiBases(eventDefs, eventUiSingleBase, eventUiBySource) {
        var eventUiBases = { '': eventUiSingleBase };
        for (var defId in eventDefs) {
            var def = eventDefs[defId];
            if (def.sourceId && eventUiBySource[def.sourceId]) {
                eventUiBases[defId] = eventUiBySource[def.sourceId];
            }
        }
        return eventUiBases;
    }

    var View = /** @class */ (function (_super) {
        __extends(View, _super);
        function View(viewSpec, parentEl) {
            var _this = _super.call(this, createElement('div', { className: 'fc-view fc-' + viewSpec.type + '-view' })) || this;
            _this.renderDatesMem = memoizeRendering(_this.renderDatesWrap, _this.unrenderDatesWrap);
            _this.renderBusinessHoursMem = memoizeRendering(_this.renderBusinessHours, _this.unrenderBusinessHours, [_this.renderDatesMem]);
            _this.renderDateSelectionMem = memoizeRendering(_this.renderDateSelectionWrap, _this.unrenderDateSelectionWrap, [_this.renderDatesMem]);
            _this.renderEventsMem = memoizeRendering(_this.renderEvents, _this.unrenderEvents, [_this.renderDatesMem]);
            _this.renderEventSelectionMem = memoizeRendering(_this.renderEventSelectionWrap, _this.unrenderEventSelectionWrap, [_this.renderEventsMem]);
            _this.renderEventDragMem = memoizeRendering(_this.renderEventDragWrap, _this.unrenderEventDragWrap, [_this.renderDatesMem]);
            _this.renderEventResizeMem = memoizeRendering(_this.renderEventResizeWrap, _this.unrenderEventResizeWrap, [_this.renderDatesMem]);
            _this.viewSpec = viewSpec;
            _this.type = viewSpec.type;
            parentEl.appendChild(_this.el);
            _this.initialize();
            return _this;
        }
        View.prototype.initialize = function () {
        };
        Object.defineProperty(View.prototype, "activeStart", {
            // Date Setting/Unsetting
            // -----------------------------------------------------------------------------------------------------------------
            get: function () {
                return this.context.dateEnv.toDate(this.props.dateProfile.activeRange.start);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(View.prototype, "activeEnd", {
            get: function () {
                return this.context.dateEnv.toDate(this.props.dateProfile.activeRange.end);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(View.prototype, "currentStart", {
            get: function () {
                return this.context.dateEnv.toDate(this.props.dateProfile.currentRange.start);
            },
            enumerable: true,
            configurable: true
        });
        Object.defineProperty(View.prototype, "currentEnd", {
            get: function () {
                return this.context.dateEnv.toDate(this.props.dateProfile.currentRange.end);
            },
            enumerable: true,
            configurable: true
        });
        // General Rendering
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.render = function (props, context) {
            this.renderDatesMem(props.dateProfile);
            this.renderBusinessHoursMem(props.businessHours);
            this.renderDateSelectionMem(props.dateSelection);
            this.renderEventsMem(props.eventStore);
            this.renderEventSelectionMem(props.eventSelection);
            this.renderEventDragMem(props.eventDrag);
            this.renderEventResizeMem(props.eventResize);
        };
        View.prototype.beforeUpdate = function () {
            this.addScroll(this.queryScroll());
        };
        View.prototype.destroy = function () {
            _super.prototype.destroy.call(this);
            this.renderDatesMem.unrender(); // should unrender everything else
        };
        // Sizing
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.updateSize = function (isResize, viewHeight, isAuto) {
            var calendar = this.context.calendar;
            if (isResize) {
                this.addScroll(this.queryScroll()); // NOTE: same code as in beforeUpdate
            }
            if (isResize || // HACKS...
                calendar.isViewUpdated ||
                calendar.isDatesUpdated ||
                calendar.isEventsUpdated) {
                // sort of the catch-all sizing
                // anything that might cause dimension changes
                this.updateBaseSize(isResize, viewHeight, isAuto);
            }
            // NOTE: popScroll is called by CalendarComponent
        };
        View.prototype.updateBaseSize = function (isResize, viewHeight, isAuto) {
        };
        // Date Rendering
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.renderDatesWrap = function (dateProfile) {
            this.renderDates(dateProfile);
            this.addScroll({
                duration: createDuration(this.context.options.scrollTime)
            });
        };
        View.prototype.unrenderDatesWrap = function () {
            this.stopNowIndicator();
            this.unrenderDates();
        };
        View.prototype.renderDates = function (dateProfile) { };
        View.prototype.unrenderDates = function () { };
        // Business Hours
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.renderBusinessHours = function (businessHours) { };
        View.prototype.unrenderBusinessHours = function () { };
        // Date Selection
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.renderDateSelectionWrap = function (selection) {
            if (selection) {
                this.renderDateSelection(selection);
            }
        };
        View.prototype.unrenderDateSelectionWrap = function (selection) {
            if (selection) {
                this.unrenderDateSelection(selection);
            }
        };
        View.prototype.renderDateSelection = function (selection) { };
        View.prototype.unrenderDateSelection = function (selection) { };
        // Event Rendering
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.renderEvents = function (eventStore) { };
        View.prototype.unrenderEvents = function () { };
        // util for subclasses
        View.prototype.sliceEvents = function (eventStore, allDay) {
            var props = this.props;
            return sliceEventStore(eventStore, props.eventUiBases, props.dateProfile.activeRange, allDay ? this.context.nextDayThreshold : null).fg;
        };
        // Event Selection
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.renderEventSelectionWrap = function (instanceId) {
            if (instanceId) {
                this.renderEventSelection(instanceId);
            }
        };
        View.prototype.unrenderEventSelectionWrap = function (instanceId) {
            if (instanceId) {
                this.unrenderEventSelection(instanceId);
            }
        };
        View.prototype.renderEventSelection = function (instanceId) { };
        View.prototype.unrenderEventSelection = function (instanceId) { };
        // Event Drag
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.renderEventDragWrap = function (state) {
            if (state) {
                this.renderEventDrag(state);
            }
        };
        View.prototype.unrenderEventDragWrap = function (state) {
            if (state) {
                this.unrenderEventDrag(state);
            }
        };
        View.prototype.renderEventDrag = function (state) { };
        View.prototype.unrenderEventDrag = function (state) { };
        // Event Resize
        // -----------------------------------------------------------------------------------------------------------------
        View.prototype.renderEventResizeWrap = function (state) {
            if (state) {
                this.renderEventResize(state);
            }
        };
        View.prototype.unrenderEventResizeWrap = function (state) {
            if (state) {
                this.unrenderEventResize(state);
            }
        };
        View.prototype.renderEventResize = function (state) { };
        View.prototype.unrenderEventResize = function (state) { };
        /* Now Indicator
        ------------------------------------------------------------------------------------------------------------------*/
        // Immediately render the current time indicator and begins re-rendering it at an interval,
        // which is defined by this.getNowIndicatorUnit().
        // TODO: somehow do this for the current whole day's background too
        // USAGE: must be called manually from subclasses' render methods! don't need to call stopNowIndicator tho
        View.prototype.startNowIndicator = function (dateProfile, dateProfileGenerator) {
            var _this = this;
            var _a = this.context, calendar = _a.calendar, dateEnv = _a.dateEnv, options = _a.options;
            var unit;
            var update;
            var delay; // ms wait value
            if (options.nowIndicator && !this.initialNowDate) {
                unit = this.getNowIndicatorUnit(dateProfile, dateProfileGenerator);
                if (unit) {
                    update = this.updateNowIndicator.bind(this);
                    this.initialNowDate = calendar.getNow();
                    this.initialNowQueriedMs = new Date().valueOf();
                    // wait until the beginning of the next interval
                    delay = dateEnv.add(dateEnv.startOf(this.initialNowDate, unit), createDuration(1, unit)).valueOf() - this.initialNowDate.valueOf();
                    // TODO: maybe always use setTimeout, waiting until start of next unit
                    this.nowIndicatorTimeoutID = setTimeout(function () {
                        _this.nowIndicatorTimeoutID = null;
                        update();
                        if (unit === 'second') {
                            delay = 1000; // every second
                        }
                        else {
                            delay = 1000 * 60; // otherwise, every minute
                        }
                        _this.nowIndicatorIntervalID = setInterval(update, delay); // update every interval
                    }, delay);
                }
                // rendering will be initiated in updateSize
            }
        };
        // rerenders the now indicator, computing the new current time from the amount of time that has passed
        // since the initial getNow call.
        View.prototype.updateNowIndicator = function () {
            if (this.props.dateProfile && // a way to determine if dates were rendered yet
                this.initialNowDate // activated before?
            ) {
                this.unrenderNowIndicator(); // won't unrender if unnecessary
                this.renderNowIndicator(addMs(this.initialNowDate, new Date().valueOf() - this.initialNowQueriedMs));
                this.isNowIndicatorRendered = true;
            }
        };
        // Immediately unrenders the view's current time indicator and stops any re-rendering timers.
        // Won't cause side effects if indicator isn't rendered.
        View.prototype.stopNowIndicator = function () {
            if (this.nowIndicatorTimeoutID) {
                clearTimeout(this.nowIndicatorTimeoutID);
                this.nowIndicatorTimeoutID = null;
            }
            if (this.nowIndicatorIntervalID) {
                clearInterval(this.nowIndicatorIntervalID);
                this.nowIndicatorIntervalID = null;
            }
            if (this.isNowIndicatorRendered) {
                this.unrenderNowIndicator();
                this.isNowIndicatorRendered = false;
            }
        };
        View.prototype.getNowIndicatorUnit = function (dateProfile, dateProfileGenerator) {
            // subclasses should implement
        };
        // Renders a current time indicator at the given datetime
        View.prototype.renderNowIndicator = function (date) {
            // SUBCLASSES MUST PASS TO CHILDREN!
        };
        // Undoes the rendering actions from renderNowIndicator
        View.prototype.unrenderNowIndicator = function () {
            // SUBCLASSES MUST PASS TO CHILDREN!
        };
        /* Scroller
        ------------------------------------------------------------------------------------------------------------------*/
        View.prototype.addScroll = function (scroll, isForced) {
            if (isForced) {
                scroll.isForced = isForced;
            }
            __assign(this.queuedScroll || (this.queuedScroll = {}), scroll);
        };
        View.prototype.popScroll = function (isResize) {
            this.applyQueuedScroll(isResize);
            this.queuedScroll = null;
        };
        View.prototype.applyQueuedScroll = function (isResize) {
            if (this.queuedScroll) {
                this.applyScroll(this.queuedScroll, isResize);
            }
        };
        View.prototype.queryScroll = function () {
            var scroll = {};
            if (this.props.dateProfile) { // dates rendered yet?
                __assign(scroll, this.queryDateScroll());
            }
            return scroll;
        };
        View.prototype.applyScroll = function (scroll, isResize) {
            var duration = scroll.duration, isForced = scroll.isForced;
            if (duration != null && !isForced) {
                delete scroll.duration;
                if (this.props.dateProfile) { // dates rendered yet?
                    __assign(scroll, this.computeDateScroll(duration));
                }
            }
            if (this.props.dateProfile) { // dates rendered yet?
                this.applyDateScroll(scroll);
            }
        };
        View.prototype.computeDateScroll = function (duration) {
            return {}; // subclasses must implement
        };
        View.prototype.queryDateScroll = function () {
            return {}; // subclasses must implement
        };
        View.prototype.applyDateScroll = function (scroll) {
            // subclasses must implement
        };
        // for API
        View.prototype.scrollToDuration = function (duration) {
            this.applyScroll({ duration: duration }, false);
        };
        return View;
    }(DateComponent));
    EmitterMixin.mixInto(View);
    View.prototype.usesMinMaxTime = false;
    View.prototype.dateProfileGeneratorClass = DateProfileGenerator;

    var FgEventRenderer = /** @class */ (function () {
        function FgEventRenderer() {
            this.segs = [];
            this.isSizeDirty = false;
        }
        FgEventRenderer.prototype.renderSegs = function (context, segs, mirrorInfo) {
            this.context = context;
            this.rangeUpdated(); // called too frequently :(
            // render an `.el` on each seg
            // returns a subset of the segs. segs that were actually rendered
            segs = this.renderSegEls(segs, mirrorInfo);
            this.segs = segs;
            this.attachSegs(segs, mirrorInfo);
            this.isSizeDirty = true;
            triggerRenderedSegs(this.context, this.segs, Boolean(mirrorInfo));
        };
        FgEventRenderer.prototype.unrender = function (context, _segs, mirrorInfo) {
            triggerWillRemoveSegs(this.context, this.segs, Boolean(mirrorInfo));
            this.detachSegs(this.segs);
            this.segs = [];
        };
        // Updates values that rely on options and also relate to range
        FgEventRenderer.prototype.rangeUpdated = function () {
            var options = this.context.options;
            var displayEventTime;
            var displayEventEnd;
            this.eventTimeFormat = createFormatter(options.eventTimeFormat || this.computeEventTimeFormat(), options.defaultRangeSeparator);
            displayEventTime = options.displayEventTime;
            if (displayEventTime == null) {
                displayEventTime = this.computeDisplayEventTime(); // might be based off of range
            }
            displayEventEnd = options.displayEventEnd;
            if (displayEventEnd == null) {
                displayEventEnd = this.computeDisplayEventEnd(); // might be based off of range
            }
            this.displayEventTime = displayEventTime;
            this.displayEventEnd = displayEventEnd;
        };
        // Renders and assigns an `el` property for each foreground event segment.
        // Only returns segments that successfully rendered.
        FgEventRenderer.prototype.renderSegEls = function (segs, mirrorInfo) {
            var html = '';
            var i;
            if (segs.length) { // don't build an empty html string
                // build a large concatenation of event segment HTML
                for (i = 0; i < segs.length; i++) {
                    html += this.renderSegHtml(segs[i], mirrorInfo);
                }
                // Grab individual elements from the combined HTML string. Use each as the default rendering.
                // Then, compute the 'el' for each segment. An el might be null if the eventRender callback returned false.
                htmlToElements(html).forEach(function (el, i) {
                    var seg = segs[i];
                    if (el) {
                        seg.el = el;
                    }
                });
                segs = filterSegsViaEls(this.context, segs, Boolean(mirrorInfo));
            }
            return segs;
        };
        // Generic utility for generating the HTML classNames for an event segment's element
        FgEventRenderer.prototype.getSegClasses = function (seg, isDraggable, isResizable, mirrorInfo) {
            var classes = [
                'fc-event',
                seg.isStart ? 'fc-start' : 'fc-not-start',
                seg.isEnd ? 'fc-end' : 'fc-not-end'
            ].concat(seg.eventRange.ui.classNames);
            if (isDraggable) {
                classes.push('fc-draggable');
            }
            if (isResizable) {
                classes.push('fc-resizable');
            }
            if (mirrorInfo) {
                classes.push('fc-mirror');
                if (mirrorInfo.isDragging) {
                    classes.push('fc-dragging');
                }
                if (mirrorInfo.isResizing) {
                    classes.push('fc-resizing');
                }
            }
            return classes;
        };
        // Compute the text that should be displayed on an event's element.
        // `range` can be the Event object itself, or something range-like, with at least a `start`.
        // If event times are disabled, or the event has no time, will return a blank string.
        // If not specified, formatter will default to the eventTimeFormat setting,
        // and displayEnd will default to the displayEventEnd setting.
        FgEventRenderer.prototype.getTimeText = function (eventRange, formatter, displayEnd) {
            var def = eventRange.def, instance = eventRange.instance;
            return this._getTimeText(instance.range.start, def.hasEnd ? instance.range.end : null, def.allDay, formatter, displayEnd, instance.forcedStartTzo, instance.forcedEndTzo);
        };
        FgEventRenderer.prototype._getTimeText = function (start, end, allDay, formatter, displayEnd, forcedStartTzo, forcedEndTzo) {
            var dateEnv = this.context.dateEnv;
            if (formatter == null) {
                formatter = this.eventTimeFormat;
            }
            if (displayEnd == null) {
                displayEnd = this.displayEventEnd;
            }
            if (this.displayEventTime && !allDay) {
                if (displayEnd && end) {
                    return dateEnv.formatRange(start, end, formatter, {
                        forcedStartTzo: forcedStartTzo,
                        forcedEndTzo: forcedEndTzo
                    });
                }
                else {
                    return dateEnv.format(start, formatter, {
                        forcedTzo: forcedStartTzo
                    });
                }
            }
            return '';
        };
        FgEventRenderer.prototype.computeEventTimeFormat = function () {
            return {
                hour: 'numeric',
                minute: '2-digit',
                omitZeroMinute: true
            };
        };
        FgEventRenderer.prototype.computeDisplayEventTime = function () {
            return true;
        };
        FgEventRenderer.prototype.computeDisplayEventEnd = function () {
            return true;
        };
        // Utility for generating event skin-related CSS properties
        FgEventRenderer.prototype.getSkinCss = function (ui) {
            return {
                'background-color': ui.backgroundColor,
                'border-color': ui.borderColor,
                color: ui.textColor
            };
        };
        FgEventRenderer.prototype.sortEventSegs = function (segs) {
            var specs = this.context.eventOrderSpecs;
            var objs = segs.map(buildSegCompareObj);
            objs.sort(function (obj0, obj1) {
                return compareByFieldSpecs(obj0, obj1, specs);
            });
            return objs.map(function (c) {
                return c._seg;
            });
        };
        FgEventRenderer.prototype.computeSizes = function (force) {
            if (force || this.isSizeDirty) {
                this.computeSegSizes(this.segs);
            }
        };
        FgEventRenderer.prototype.assignSizes = function (force) {
            if (force || this.isSizeDirty) {
                this.assignSegSizes(this.segs);
                this.isSizeDirty = false;
            }
        };
        FgEventRenderer.prototype.computeSegSizes = function (segs) {
        };
        FgEventRenderer.prototype.assignSegSizes = function (segs) {
        };
        // Manipulation on rendered segs
        FgEventRenderer.prototype.hideByHash = function (hash) {
            if (hash) {
                for (var _i = 0, _a = this.segs; _i < _a.length; _i++) {
                    var seg = _a[_i];
                    if (hash[seg.eventRange.instance.instanceId]) {
                        seg.el.style.visibility = 'hidden';
                    }
                }
            }
        };
        FgEventRenderer.prototype.showByHash = function (hash) {
            if (hash) {
                for (var _i = 0, _a = this.segs; _i < _a.length; _i++) {
                    var seg = _a[_i];
                    if (hash[seg.eventRange.instance.instanceId]) {
                        seg.el.style.visibility = '';
                    }
                }
            }
        };
        FgEventRenderer.prototype.selectByInstanceId = function (instanceId) {
            if (instanceId) {
                for (var _i = 0, _a = this.segs; _i < _a.length; _i++) {
                    var seg = _a[_i];
                    var eventInstance = seg.eventRange.instance;
                    if (eventInstance && eventInstance.instanceId === instanceId &&
                        seg.el // necessary?
                    ) {
                        seg.el.classList.add('fc-selected');
                    }
                }
            }
        };
        FgEventRenderer.prototype.unselectByInstanceId = function (instanceId) {
            if (instanceId) {
                for (var _i = 0, _a = this.segs; _i < _a.length; _i++) {
                    var seg = _a[_i];
                    if (seg.el) { // necessary?
                        seg.el.classList.remove('fc-selected');
                    }
                }
            }
        };
        return FgEventRenderer;
    }());
    // returns a object with all primitive props that can be compared
    function buildSegCompareObj(seg) {
        var eventDef = seg.eventRange.def;
        var range = seg.eventRange.instance.range;
        var start = range.start ? range.start.valueOf() : 0; // TODO: better support for open-range events
        var end = range.end ? range.end.valueOf() : 0; // "
        return __assign({}, eventDef.extendedProps, eventDef, { id: eventDef.publicId, start: start,
            end: end, duration: end - start, allDay: Number(eventDef.allDay), _seg: seg // for later retrieval
         });
    }

    /*
    TODO: when refactoring this class, make a new FillRenderer instance for each `type`
    */
    var FillRenderer = /** @class */ (function () {
        function FillRenderer() {
            this.fillSegTag = 'div';
            this.dirtySizeFlags = {};
            this.containerElsByType = {};
            this.segsByType = {};
        }
        FillRenderer.prototype.getSegsByType = function (type) {
            return this.segsByType[type] || [];
        };
        FillRenderer.prototype.renderSegs = function (type, context, segs) {
            var _a;
            this.context = context;
            var renderedSegs = this.renderSegEls(type, segs); // assignes `.el` to each seg. returns successfully rendered segs
            var containerEls = this.attachSegs(type, renderedSegs);
            if (containerEls) {
                (_a = (this.containerElsByType[type] || (this.containerElsByType[type] = []))).push.apply(_a, containerEls);
            }
            this.segsByType[type] = renderedSegs;
            if (type === 'bgEvent') {
                triggerRenderedSegs(context, renderedSegs, false); // isMirror=false
            }
            this.dirtySizeFlags[type] = true;
        };
        // Unrenders a specific type of fill that is currently rendered on the grid
        FillRenderer.prototype.unrender = function (type, context) {
            var segs = this.segsByType[type];
            if (segs) {
                if (type === 'bgEvent') {
                    triggerWillRemoveSegs(context, segs, false); // isMirror=false
                }
                this.detachSegs(type, segs);
            }
        };
        // Renders and assigns an `el` property for each fill segment. Generic enough to work with different types.
        // Only returns segments that successfully rendered.
        FillRenderer.prototype.renderSegEls = function (type, segs) {
            var _this = this;
            var html = '';
            var i;
            if (segs.length) {
                // build a large concatenation of segment HTML
                for (i = 0; i < segs.length; i++) {
                    html += this.renderSegHtml(type, segs[i]);
                }
                // Grab individual elements from the combined HTML string. Use each as the default rendering.
                // Then, compute the 'el' for each segment.
                htmlToElements(html).forEach(function (el, i) {
                    var seg = segs[i];
                    if (el) {
                        seg.el = el;
                    }
                });
                if (type === 'bgEvent') {
                    segs = filterSegsViaEls(this.context, segs, false // isMirror. background events can never be mirror elements
                    );
                }
                // correct element type? (would be bad if a non-TD were inserted into a table for example)
                segs = segs.filter(function (seg) {
                    return elementMatches(seg.el, _this.fillSegTag);
                });
            }
            return segs;
        };
        // Builds the HTML needed for one fill segment. Generic enough to work with different types.
        FillRenderer.prototype.renderSegHtml = function (type, seg) {
            var css = null;
            var classNames = [];
            if (type !== 'highlight' && type !== 'businessHours') {
                css = {
                    'background-color': seg.eventRange.ui.backgroundColor
                };
            }
            if (type !== 'highlight') {
                classNames = classNames.concat(seg.eventRange.ui.classNames);
            }
            if (type === 'businessHours') {
                classNames.push('fc-bgevent');
            }
            else {
                classNames.push('fc-' + type.toLowerCase());
            }
            return '<' + this.fillSegTag +
                (classNames.length ? ' class="' + classNames.join(' ') + '"' : '') +
                (css ? ' style="' + cssToStr(css) + '"' : '') +
                '></' + this.fillSegTag + '>';
        };
        FillRenderer.prototype.detachSegs = function (type, segs) {
            var containerEls = this.containerElsByType[type];
            if (containerEls) {
                containerEls.forEach(removeElement);
                delete this.containerElsByType[type];
            }
        };
        FillRenderer.prototype.computeSizes = function (force) {
            for (var type in this.segsByType) {
                if (force || this.dirtySizeFlags[type]) {
                    this.computeSegSizes(this.segsByType[type]);
                }
            }
        };
        FillRenderer.prototype.assignSizes = function (force) {
            for (var type in this.segsByType) {
                if (force || this.dirtySizeFlags[type]) {
                    this.assignSegSizes(this.segsByType[type]);
                }
            }
            this.dirtySizeFlags = {};
        };
        FillRenderer.prototype.computeSegSizes = function (segs) {
        };
        FillRenderer.prototype.assignSegSizes = function (segs) {
        };
        return FillRenderer;
    }());

    var NamedTimeZoneImpl = /** @class */ (function () {
        function NamedTimeZoneImpl(timeZoneName) {
            this.timeZoneName = timeZoneName;
        }
        return NamedTimeZoneImpl;
    }());

    /*
    An abstraction for a dragging interaction originating on an event.
    Does higher-level things than PointerDragger, such as possibly:
    - a "mirror" that moves with the pointer
    - a minimum number of pixels or other criteria for a true drag to begin

    subclasses must emit:
    - pointerdown
    - dragstart
    - dragmove
    - pointerup
    - dragend
    */
    var ElementDragging = /** @class */ (function () {
        function ElementDragging(el) {
            this.emitter = new EmitterMixin();
        }
        ElementDragging.prototype.destroy = function () {
        };
        ElementDragging.prototype.setMirrorIsVisible = function (bool) {
            // optional if subclass doesn't want to support a mirror
        };
        ElementDragging.prototype.setMirrorNeedsRevert = function (bool) {
            // optional if subclass doesn't want to support a mirror
        };
        ElementDragging.prototype.setAutoScrollEnabled = function (bool) {
            // optional
        };
        return ElementDragging;
    }());

    function formatDate(dateInput, settings) {
        if (settings === void 0) { settings = {}; }
        var dateEnv = buildDateEnv$1(settings);
        var formatter = createFormatter(settings);
        var dateMeta = dateEnv.createMarkerMeta(dateInput);
        if (!dateMeta) { // TODO: warning?
            return '';
        }
        return dateEnv.format(dateMeta.marker, formatter, {
            forcedTzo: dateMeta.forcedTzo
        });
    }
    function formatRange(startInput, endInput, settings // mixture of env and formatter settings
    ) {
        var dateEnv = buildDateEnv$1(typeof settings === 'object' && settings ? settings : {}); // pass in if non-null object
        var formatter = createFormatter(settings, globalDefaults.defaultRangeSeparator);
        var startMeta = dateEnv.createMarkerMeta(startInput);
        var endMeta = dateEnv.createMarkerMeta(endInput);
        if (!startMeta || !endMeta) { // TODO: warning?
            return '';
        }
        return dateEnv.formatRange(startMeta.marker, endMeta.marker, formatter, {
            forcedStartTzo: startMeta.forcedTzo,
            forcedEndTzo: endMeta.forcedTzo,
            isEndExclusive: settings.isEndExclusive
        });
    }
    // TODO: more DRY and optimized
    function buildDateEnv$1(settings) {
        var locale = buildLocale(settings.locale || 'en', parseRawLocales([]).map); // TODO: don't hardcode 'en' everywhere
        // ensure required settings
        settings = __assign({ timeZone: globalDefaults.timeZone, calendarSystem: 'gregory' }, settings, { locale: locale });
        return new DateEnv(settings);
    }

    var DRAG_META_PROPS = {
        startTime: createDuration,
        duration: createDuration,
        create: Boolean,
        sourceId: String
    };
    var DRAG_META_DEFAULTS = {
        create: true
    };
    function parseDragMeta(raw) {
        var leftoverProps = {};
        var refined = refineProps(raw, DRAG_META_PROPS, DRAG_META_DEFAULTS, leftoverProps);
        refined.leftoverProps = leftoverProps;
        return refined;
    }

    // Computes a default column header formatting string if `colFormat` is not explicitly defined
    function computeFallbackHeaderFormat(datesRepDistinctDays, dayCnt) {
        // if more than one week row, or if there are a lot of columns with not much space,
        // put just the day numbers will be in each cell
        if (!datesRepDistinctDays || dayCnt > 10) {
            return { weekday: 'short' }; // "Sat"
        }
        else if (dayCnt > 1) {
            return { weekday: 'short', month: 'numeric', day: 'numeric', omitCommas: true }; // "Sat 11/12"
        }
        else {
            return { weekday: 'long' }; // "Saturday"
        }
    }
    function renderDateCell(dateMarker, dateProfile, datesRepDistinctDays, colCnt, colHeadFormat, context, colspan, otherAttrs) {
        var dateEnv = context.dateEnv, theme = context.theme, options = context.options;
        var isDateValid = rangeContainsMarker(dateProfile.activeRange, dateMarker); // TODO: called too frequently. cache somehow.
        var classNames = [
            'fc-day-header',
            theme.getClass('widgetHeader')
        ];
        var innerHtml;
        if (typeof options.columnHeaderHtml === 'function') {
            innerHtml = options.columnHeaderHtml(dateEnv.toDate(dateMarker));
        }
        else if (typeof options.columnHeaderText === 'function') {
            innerHtml = htmlEscape(options.columnHeaderText(dateEnv.toDate(dateMarker)));
        }
        else {
            innerHtml = htmlEscape(dateEnv.format(dateMarker, colHeadFormat));
        }
        // if only one row of days, the classNames on the header can represent the specific days beneath
        if (datesRepDistinctDays) {
            classNames = classNames.concat(
            // includes the day-of-week class
            // noThemeHighlight=true (don't highlight the header)
            getDayClasses(dateMarker, dateProfile, context, true));
        }
        else {
            classNames.push('fc-' + DAY_IDS[dateMarker.getUTCDay()]); // only add the day-of-week class
        }
        return '' +
            '<th class="' + classNames.join(' ') + '"' +
            ((isDateValid && datesRepDistinctDays) ?
                ' data-date="' + dateEnv.formatIso(dateMarker, { omitTime: true }) + '"' :
                '') +
            (colspan > 1 ?
                ' colspan="' + colspan + '"' :
                '') +
            (otherAttrs ?
                ' ' + otherAttrs :
                '') +
            '>' +
            (isDateValid ?
                // don't make a link if the heading could represent multiple days, or if there's only one day (forceOff)
                buildGotoAnchorHtml(options, dateEnv, { date: dateMarker, forceOff: !datesRepDistinctDays || colCnt === 1 }, innerHtml) :
                // if not valid, display text, but no link
                innerHtml) +
            '</th>';
    }

    var DayHeader = /** @class */ (function (_super) {
        __extends(DayHeader, _super);
        function DayHeader(parentEl) {
            var _this = _super.call(this) || this;
            _this.renderSkeleton = memoizeRendering(_this._renderSkeleton, _this._unrenderSkeleton);
            _this.parentEl = parentEl;
            return _this;
        }
        DayHeader.prototype.render = function (props, context) {
            var dates = props.dates, datesRepDistinctDays = props.datesRepDistinctDays;
            var parts = [];
            this.renderSkeleton(context);
            if (props.renderIntroHtml) {
                parts.push(props.renderIntroHtml());
            }
            var colHeadFormat = createFormatter(context.options.columnHeaderFormat ||
                computeFallbackHeaderFormat(datesRepDistinctDays, dates.length));
            for (var _i = 0, dates_1 = dates; _i < dates_1.length; _i++) {
                var date = dates_1[_i];
                parts.push(renderDateCell(date, props.dateProfile, datesRepDistinctDays, dates.length, colHeadFormat, context));
            }
            if (context.isRtl) {
                parts.reverse();
            }
            this.thead.innerHTML = '<tr>' + parts.join('') + '</tr>';
        };
        DayHeader.prototype.destroy = function () {
            _super.prototype.destroy.call(this);
            this.renderSkeleton.unrender();
        };
        DayHeader.prototype._renderSkeleton = function (context) {
            var theme = context.theme;
            var parentEl = this.parentEl;
            parentEl.innerHTML = ''; // because might be nbsp
            parentEl.appendChild(this.el = htmlToElement('<div class="fc-row ' + theme.getClass('headerRow') + '">' +
                '<table class="' + theme.getClass('tableGrid') + '">' +
                '<thead></thead>' +
                '</table>' +
                '</div>'));
            this.thead = this.el.querySelector('thead');
        };
        DayHeader.prototype._unrenderSkeleton = function () {
            removeElement(this.el);
        };
        return DayHeader;
    }(Component));

    var DaySeries = /** @class */ (function () {
        function DaySeries(range, dateProfileGenerator) {
            var date = range.start;
            var end = range.end;
            var indices = [];
            var dates = [];
            var dayIndex = -1;
            while (date < end) { // loop each day from start to end
                if (dateProfileGenerator.isHiddenDay(date)) {
                    indices.push(dayIndex + 0.5); // mark that it's between indices
                }
                else {
                    dayIndex++;
                    indices.push(dayIndex);
                    dates.push(date);
                }
                date = addDays(date, 1);
            }
            this.dates = dates;
            this.indices = indices;
            this.cnt = dates.length;
        }
        DaySeries.prototype.sliceRange = function (range) {
            var firstIndex = this.getDateDayIndex(range.start); // inclusive first index
            var lastIndex = this.getDateDayIndex(addDays(range.end, -1)); // inclusive last index
            var clippedFirstIndex = Math.max(0, firstIndex);
            var clippedLastIndex = Math.min(this.cnt - 1, lastIndex);
            // deal with in-between indices
            clippedFirstIndex = Math.ceil(clippedFirstIndex); // in-between starts round to next cell
            clippedLastIndex = Math.floor(clippedLastIndex); // in-between ends round to prev cell
            if (clippedFirstIndex <= clippedLastIndex) {
                return {
                    firstIndex: clippedFirstIndex,
                    lastIndex: clippedLastIndex,
                    isStart: firstIndex === clippedFirstIndex,
                    isEnd: lastIndex === clippedLastIndex
                };
            }
            else {
                return null;
            }
        };
        // Given a date, returns its chronolocial cell-index from the first cell of the grid.
        // If the date lies between cells (because of hiddenDays), returns a floating-point value between offsets.
        // If before the first offset, returns a negative number.
        // If after the last offset, returns an offset past the last cell offset.
        // Only works for *start* dates of cells. Will not work for exclusive end dates for cells.
        DaySeries.prototype.getDateDayIndex = function (date) {
            var indices = this.indices;
            var dayOffset = Math.floor(diffDays(this.dates[0], date));
            if (dayOffset < 0) {
                return indices[0] - 1;
            }
            else if (dayOffset >= indices.length) {
                return indices[indices.length - 1] + 1;
            }
            else {
                return indices[dayOffset];
            }
        };
        return DaySeries;
    }());

    var DayTable = /** @class */ (function () {
        function DayTable(daySeries, breakOnWeeks) {
            var dates = daySeries.dates;
            var daysPerRow;
            var firstDay;
            var rowCnt;
            if (breakOnWeeks) {
                // count columns until the day-of-week repeats
                firstDay = dates[0].getUTCDay();
                for (daysPerRow = 1; daysPerRow < dates.length; daysPerRow++) {
                    if (dates[daysPerRow].getUTCDay() === firstDay) {
                        break;
                    }
                }
                rowCnt = Math.ceil(dates.length / daysPerRow);
            }
            else {
                rowCnt = 1;
                daysPerRow = dates.length;
            }
            this.rowCnt = rowCnt;
            this.colCnt = daysPerRow;
            this.daySeries = daySeries;
            this.cells = this.buildCells();
            this.headerDates = this.buildHeaderDates();
        }
        DayTable.prototype.buildCells = function () {
            var rows = [];
            for (var row = 0; row < this.rowCnt; row++) {
                var cells = [];
                for (var col = 0; col < this.colCnt; col++) {
                    cells.push(this.buildCell(row, col));
                }
                rows.push(cells);
            }
            return rows;
        };
        DayTable.prototype.buildCell = function (row, col) {
            return {
                date: this.daySeries.dates[row * this.colCnt + col]
            };
        };
        DayTable.prototype.buildHeaderDates = function () {
            var dates = [];
            for (var col = 0; col < this.colCnt; col++) {
                dates.push(this.cells[0][col].date);
            }
            return dates;
        };
        DayTable.prototype.sliceRange = function (range) {
            var colCnt = this.colCnt;
            var seriesSeg = this.daySeries.sliceRange(range);
            var segs = [];
            if (seriesSeg) {
                var firstIndex = seriesSeg.firstIndex, lastIndex = seriesSeg.lastIndex;
                var index = firstIndex;
                while (index <= lastIndex) {
                    var row = Math.floor(index / colCnt);
                    var nextIndex = Math.min((row + 1) * colCnt, lastIndex + 1);
                    segs.push({
                        row: row,
                        firstCol: index % colCnt,
                        lastCol: (nextIndex - 1) % colCnt,
                        isStart: seriesSeg.isStart && index === firstIndex,
                        isEnd: seriesSeg.isEnd && (nextIndex - 1) === lastIndex
                    });
                    index = nextIndex;
                }
            }
            return segs;
        };
        return DayTable;
    }());

    var Slicer = /** @class */ (function () {
        function Slicer() {
            this.sliceBusinessHours = memoize(this._sliceBusinessHours);
            this.sliceDateSelection = memoize(this._sliceDateSpan);
            this.sliceEventStore = memoize(this._sliceEventStore);
            this.sliceEventDrag = memoize(this._sliceInteraction);
            this.sliceEventResize = memoize(this._sliceInteraction);
        }
        Slicer.prototype.sliceProps = function (props, dateProfile, nextDayThreshold, calendar, component) {
            var extraArgs = [];
            for (var _i = 5; _i < arguments.length; _i++) {
                extraArgs[_i - 5] = arguments[_i];
            }
            var eventUiBases = props.eventUiBases;
            var eventSegs = this.sliceEventStore.apply(this, [props.eventStore, eventUiBases, dateProfile, nextDayThreshold, component].concat(extraArgs));
            return {
                dateSelectionSegs: this.sliceDateSelection.apply(this, [props.dateSelection, eventUiBases, component].concat(extraArgs)),
                businessHourSegs: this.sliceBusinessHours.apply(this, [props.businessHours, dateProfile, nextDayThreshold, calendar, component].concat(extraArgs)),
                fgEventSegs: eventSegs.fg,
                bgEventSegs: eventSegs.bg,
                eventDrag: this.sliceEventDrag.apply(this, [props.eventDrag, eventUiBases, dateProfile, nextDayThreshold, component].concat(extraArgs)),
                eventResize: this.sliceEventResize.apply(this, [props.eventResize, eventUiBases, dateProfile, nextDayThreshold, component].concat(extraArgs)),
                eventSelection: props.eventSelection
            }; // TODO: give interactionSegs?
        };
        Slicer.prototype.sliceNowDate = function (// does not memoize
        date, component) {
            var extraArgs = [];
            for (var _i = 2; _i < arguments.length; _i++) {
                extraArgs[_i - 2] = arguments[_i];
            }
            return this._sliceDateSpan.apply(this, [{ range: { start: date, end: addMs(date, 1) }, allDay: false },
                {},
                component].concat(extraArgs));
        };
        Slicer.prototype._sliceBusinessHours = function (businessHours, dateProfile, nextDayThreshold, calendar, component) {
            var extraArgs = [];
            for (var _i = 5; _i < arguments.length; _i++) {
                extraArgs[_i - 5] = arguments[_i];
            }
            if (!businessHours) {
                return [];
            }
            return this._sliceEventStore.apply(this, [expandRecurring(businessHours, computeActiveRange(dateProfile, Boolean(nextDayThreshold)), calendar),
                {},
                dateProfile,
                nextDayThreshold,
                component].concat(extraArgs)).bg;
        };
        Slicer.prototype._sliceEventStore = function (eventStore, eventUiBases, dateProfile, nextDayThreshold, component) {
            var extraArgs = [];
            for (var _i = 5; _i < arguments.length; _i++) {
                extraArgs[_i - 5] = arguments[_i];
            }
            if (eventStore) {
                var rangeRes = sliceEventStore(eventStore, eventUiBases, computeActiveRange(dateProfile, Boolean(nextDayThreshold)), nextDayThreshold);
                return {
                    bg: this.sliceEventRanges(rangeRes.bg, component, extraArgs),
                    fg: this.sliceEventRanges(rangeRes.fg, component, extraArgs)
                };
            }
            else {
                return { bg: [], fg: [] };
            }
        };
        Slicer.prototype._sliceInteraction = function (interaction, eventUiBases, dateProfile, nextDayThreshold, component) {
            var extraArgs = [];
            for (var _i = 5; _i < arguments.length; _i++) {
                extraArgs[_i - 5] = arguments[_i];
            }
            if (!interaction) {
                return null;
            }
            var rangeRes = sliceEventStore(interaction.mutatedEvents, eventUiBases, computeActiveRange(dateProfile, Boolean(nextDayThreshold)), nextDayThreshold);
            return {
                segs: this.sliceEventRanges(rangeRes.fg, component, extraArgs),
                affectedInstances: interaction.affectedEvents.instances,
                isEvent: interaction.isEvent,
                sourceSeg: interaction.origSeg
            };
        };
        Slicer.prototype._sliceDateSpan = function (dateSpan, eventUiBases, component) {
            var extraArgs = [];
            for (var _i = 3; _i < arguments.length; _i++) {
                extraArgs[_i - 3] = arguments[_i];
            }
            if (!dateSpan) {
                return [];
            }
            var eventRange = fabricateEventRange(dateSpan, eventUiBases, component.context.calendar);
            var segs = this.sliceRange.apply(this, [dateSpan.range].concat(extraArgs));
            for (var _a = 0, segs_1 = segs; _a < segs_1.length; _a++) {
                var seg = segs_1[_a];
                seg.component = component;
                seg.eventRange = eventRange;
            }
            return segs;
        };
        /*
        "complete" seg means it has component and eventRange
        */
        Slicer.prototype.sliceEventRanges = function (eventRanges, component, // TODO: kill
        extraArgs) {
            var segs = [];
            for (var _i = 0, eventRanges_1 = eventRanges; _i < eventRanges_1.length; _i++) {
                var eventRange = eventRanges_1[_i];
                segs.push.apply(segs, this.sliceEventRange(eventRange, component, extraArgs));
            }
            return segs;
        };
        /*
        "complete" seg means it has component and eventRange
        */
        Slicer.prototype.sliceEventRange = function (eventRange, component, // TODO: kill
        extraArgs) {
            var segs = this.sliceRange.apply(this, [eventRange.range].concat(extraArgs));
            for (var _i = 0, segs_2 = segs; _i < segs_2.length; _i++) {
                var seg = segs_2[_i];
                seg.component = component;
                seg.eventRange = eventRange;
                seg.isStart = eventRange.isStart && seg.isStart;
                seg.isEnd = eventRange.isEnd && seg.isEnd;
            }
            return segs;
        };
        return Slicer;
    }());
    /*
    for incorporating minTime/maxTime if appropriate
    TODO: should be part of DateProfile!
    TimelineDateProfile already does this btw
    */
    function computeActiveRange(dateProfile, isComponentAllDay) {
        var range = dateProfile.activeRange;
        if (isComponentAllDay) {
            return range;
        }
        return {
            start: addMs(range.start, dateProfile.minTime.milliseconds),
            end: addMs(range.end, dateProfile.maxTime.milliseconds - 864e5) // 864e5 = ms in a day
        };
    }

    // exports
    // --------------------------------------------------------------------------------------------------
    var version = '4.4.0';

    exports.Calendar = Calendar;
    exports.Component = Component;
    exports.ComponentContext = ComponentContext;
    exports.DateComponent = DateComponent;
    exports.DateEnv = DateEnv;
    exports.DateProfileGenerator = DateProfileGenerator;
    exports.DayHeader = DayHeader;
    exports.DaySeries = DaySeries;
    exports.DayTable = DayTable;
    exports.ElementDragging = ElementDragging;
    exports.ElementScrollController = ElementScrollController;
    exports.EmitterMixin = EmitterMixin;
    exports.EventApi = EventApi;
    exports.FgEventRenderer = FgEventRenderer;
    exports.FillRenderer = FillRenderer;
    exports.Interaction = Interaction;
    exports.Mixin = Mixin;
    exports.NamedTimeZoneImpl = NamedTimeZoneImpl;
    exports.PositionCache = PositionCache;
    exports.ScrollComponent = ScrollComponent;
    exports.ScrollController = ScrollController;
    exports.Slicer = Slicer;
    exports.Splitter = Splitter;
    exports.Theme = Theme;
    exports.View = View;
    exports.WindowScrollController = WindowScrollController;
    exports.addDays = addDays;
    exports.addDurations = addDurations;
    exports.addMs = addMs;
    exports.addWeeks = addWeeks;
    exports.allowContextMenu = allowContextMenu;
    exports.allowSelection = allowSelection;
    exports.appendToElement = appendToElement;
    exports.applyAll = applyAll;
    exports.applyMutationToEventStore = applyMutationToEventStore;
    exports.applyStyle = applyStyle;
    exports.applyStyleProp = applyStyleProp;
    exports.asRoughMinutes = asRoughMinutes;
    exports.asRoughMs = asRoughMs;
    exports.asRoughSeconds = asRoughSeconds;
    exports.buildGotoAnchorHtml = buildGotoAnchorHtml;
    exports.buildSegCompareObj = buildSegCompareObj;
    exports.capitaliseFirstLetter = capitaliseFirstLetter;
    exports.combineEventUis = combineEventUis;
    exports.compareByFieldSpec = compareByFieldSpec;
    exports.compareByFieldSpecs = compareByFieldSpecs;
    exports.compareNumbers = compareNumbers;
    exports.compensateScroll = compensateScroll;
    exports.computeClippingRect = computeClippingRect;
    exports.computeEdges = computeEdges;
    exports.computeEventDraggable = computeEventDraggable;
    exports.computeEventEndResizable = computeEventEndResizable;
    exports.computeEventStartResizable = computeEventStartResizable;
    exports.computeFallbackHeaderFormat = computeFallbackHeaderFormat;
    exports.computeHeightAndMargins = computeHeightAndMargins;
    exports.computeInnerRect = computeInnerRect;
    exports.computeRect = computeRect;
    exports.computeVisibleDayRange = computeVisibleDayRange;
    exports.config = config;
    exports.constrainPoint = constrainPoint;
    exports.createDuration = createDuration;
    exports.createElement = createElement;
    exports.createEmptyEventStore = createEmptyEventStore;
    exports.createEventInstance = createEventInstance;
    exports.createFormatter = createFormatter;
    exports.createPlugin = createPlugin;
    exports.cssToStr = cssToStr;
    exports.debounce = debounce;
    exports.diffDates = diffDates;
    exports.diffDayAndTime = diffDayAndTime;
    exports.diffDays = diffDays;
    exports.diffPoints = diffPoints;
    exports.diffWeeks = diffWeeks;
    exports.diffWholeDays = diffWholeDays;
    exports.diffWholeWeeks = diffWholeWeeks;
    exports.disableCursor = disableCursor;
    exports.distributeHeight = distributeHeight;
    exports.elementClosest = elementClosest;
    exports.elementMatches = elementMatches;
    exports.enableCursor = enableCursor;
    exports.eventTupleToStore = eventTupleToStore;
    exports.filterEventStoreDefs = filterEventStoreDefs;
    exports.filterHash = filterHash;
    exports.findChildren = findChildren;
    exports.findElements = findElements;
    exports.flexibleCompare = flexibleCompare;
    exports.forceClassName = forceClassName;
    exports.formatDate = formatDate;
    exports.formatIsoTimeString = formatIsoTimeString;
    exports.formatRange = formatRange;
    exports.getAllDayHtml = getAllDayHtml;
    exports.getClippingParents = getClippingParents;
    exports.getDayClasses = getDayClasses;
    exports.getElSeg = getElSeg;
    exports.getRectCenter = getRectCenter;
    exports.getRelevantEvents = getRelevantEvents;
    exports.globalDefaults = globalDefaults;
    exports.greatestDurationDenominator = greatestDurationDenominator;
    exports.hasBgRendering = hasBgRendering;
    exports.htmlEscape = htmlEscape;
    exports.htmlToElement = htmlToElement;
    exports.insertAfterElement = insertAfterElement;
    exports.interactionSettingsStore = interactionSettingsStore;
    exports.interactionSettingsToStore = interactionSettingsToStore;
    exports.intersectRanges = intersectRanges;
    exports.intersectRects = intersectRects;
    exports.isArraysEqual = isArraysEqual;
    exports.isDateSpansEqual = isDateSpansEqual;
    exports.isInt = isInt;
    exports.isInteractionValid = isInteractionValid;
    exports.isMultiDayRange = isMultiDayRange;
    exports.isPropsEqual = isPropsEqual;
    exports.isPropsValid = isPropsValid;
    exports.isSingleDay = isSingleDay;
    exports.isValidDate = isValidDate;
    exports.listenBySelector = listenBySelector;
    exports.mapHash = mapHash;
    exports.matchCellWidths = matchCellWidths;
    exports.memoize = memoize;
    exports.memoizeOutput = memoizeOutput;
    exports.memoizeRendering = memoizeRendering;
    exports.mergeEventStores = mergeEventStores;
    exports.multiplyDuration = multiplyDuration;
    exports.padStart = padStart;
    exports.parseBusinessHours = parseBusinessHours;
    exports.parseDragMeta = parseDragMeta;
    exports.parseEventDef = parseEventDef;
    exports.parseFieldSpecs = parseFieldSpecs;
    exports.parseMarker = parse;
    exports.pointInsideRect = pointInsideRect;
    exports.prependToElement = prependToElement;
    exports.preventContextMenu = preventContextMenu;
    exports.preventDefault = preventDefault;
    exports.preventSelection = preventSelection;
    exports.processScopedUiProps = processScopedUiProps;
    exports.rangeContainsMarker = rangeContainsMarker;
    exports.rangeContainsRange = rangeContainsRange;
    exports.rangesEqual = rangesEqual;
    exports.rangesIntersect = rangesIntersect;
    exports.refineProps = refineProps;
    exports.removeElement = removeElement;
    exports.removeExact = removeExact;
    exports.renderDateCell = renderDateCell;
    exports.requestJson = requestJson;
    exports.sliceEventStore = sliceEventStore;
    exports.startOfDay = startOfDay;
    exports.subtractInnerElHeight = subtractInnerElHeight;
    exports.translateRect = translateRect;
    exports.uncompensateScroll = uncompensateScroll;
    exports.undistributeHeight = undistributeHeight;
    exports.unpromisify = unpromisify;
    exports.version = version;
    exports.whenTransitionDone = whenTransitionDone;
    exports.wholeDivideDurations = wholeDivideDurations;

    Object.defineProperty(exports, '__esModule', { value: true });

}));
