main.js

            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)
        // slotMinTime or slotMaxTime causes the range to expand.
        DateProfileGenerator.prototype.adjustActiveRange = function (range) {
            var _a = this.props, dateEnv = _a.dateEnv, usesMinMaxTime = _a.usesMinMaxTime, slotMinTime = _a.slotMinTime, slotMaxTime = _a.slotMaxTime;
            var start = range.start, end = range.end;
            if (usesMinMaxTime) {
                // expand active range if slotMinTime is negative (why not when positive?)
                if (asRoughDays(slotMinTime) < 0) {
                    start = startOfDay(start); // necessary?
                    start = dateEnv.add(start, slotMinTime);
                }
                // expand active range if slotMaxTime is beyond one day (why not when negative?)
                if (asRoughDays(slotMaxTime) > 1) {
                    end = startOfDay(end); // necessary?
                    end = addDays(end, -1);
                    end = dateEnv.add(end, slotMaxTime);
                }
            }
            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 _a = this.props, dateEnv = _a.dateEnv, dateAlignment = _a.dateAlignment;
            var start;
            var end;
            var res;
            // compute what the alignment should be
            if (!dateAlignment) {
                var dateIncrement = this.props.dateIncrement;
                if (dateIncrement) {
                    // use the smaller of the two units
                    if (asRoughMs(dateIncrement) < asRoughMs(duration)) {
                        dateAlignment = greatestDurationDenominator(dateIncrement).unit;
                    }
                    else {
                        dateAlignment = unit;
                    }
                }
                else {
                    dateAlignment = 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, dateAlignment);
                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 _a = this.props, dateEnv = _a.dateEnv, dateAlignment = _a.dateAlignment;
            var runningCount = 0;
            var start = date;
            var end;
            if (dateAlignment) {
                start = dateEnv.startOf(start, dateAlignment);
            }
            start = startOfDay(start);
            start = this.skipHiddenDays(start, direction);
            end = start;
            do {
                end = addDays(end, 1);
                if (!this.isHiddenDay(end)) {
                    runningCount += 1;
                }
            } 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 props = this.props;
            var input = props.visibleRangeInput;
            var simpleInput = typeof input === 'function'
                ? input.call(props.calendarApi, props.dateEnv.toDate(date))
                : input;
            var range = this.refineRange(simpleInput);
            if (range && (range.start == null || range.end == null)) {
                return null;
            }
            return range;
        };
        // 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 dateIncrement = this.props.dateIncrement;
            var customAlignment;
            if (dateIncrement) {
                return dateIncrement;
            }
            if ((customAlignment = this.props.dateAlignment)) {
                return createDuration(1, customAlignment);
            }
            if (fallback) {
                return fallback;
            }
            return createDuration({ days: 1 });
        };
        DateProfileGenerator.prototype.refineRange = function (rangeInput) {
            if (rangeInput) {
                var range = parseRange(rangeInput, this.props.dateEnv);
                if (range) {
                    range = computeVisibleDayRange(range);
                }
                return range;
            }
            return null;
        };
        /* Hidden Days
        ------------------------------------------------------------------------------------------------------------------*/
        // Initializes internal variables related to calculating hidden days-of-week
        DateProfileGenerator.prototype.initHiddenDays = function () {
            var hiddenDays = this.props.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.props.weekends === false) {
                hiddenDays.push(0, 6); // 0=sunday, 6=saturday
            }
            for (i = 0; i < 7; i += 1) {
                if (!(isHiddenDayHash[i] = hiddenDays.indexOf(i) !== -1)) {
                    dayCnt += 1;
                }
            }
            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, 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;
    }());

    function reduceViewType(viewType, action) {
        switch (action.type) {
            case 'CHANGE_VIEW_TYPE':
                viewType = action.viewType;
        }
        return viewType;
    }

    function reduceDynamicOptionOverrides(dynamicOptionOverrides, action) {
        var _a;
        switch (action.type) {
            case 'SET_OPTION':
                return __assign(__assign({}, dynamicOptionOverrides), (_a = {}, _a[action.optionName] = action.rawOptionValue, _a));
            default:
                return dynamicOptionOverrides;
        }
    }

    function reduceDateProfile(currentDateProfile, action, currentDate, dateProfileGenerator) {
        var dp;
        switch (action.type) {
            case 'CHANGE_VIEW_TYPE':
                return dateProfileGenerator.build(action.dateMarker || currentDate);
            case 'CHANGE_DATE':
                if (!currentDateProfile.activeRange ||
                    !rangeContainsMarker(currentDateProfile.currentRange, action.dateMarker) // don't move if date already in view
                ) {
                    return dateProfileGenerator.build(action.dateMarker);
                }
                break;
            case 'PREV':
                dp = dateProfileGenerator.buildPrev(currentDateProfile, currentDate);
                if (dp.isValid) {
                    return dp;
                }
                break;
            case 'NEXT':
                dp = dateProfileGenerator.buildNext(currentDateProfile, currentDate);
                if (dp.isValid) {
                    return dp;
                }
                break;
        }
        return currentDateProfile;
    }

    function initEventSources(calendarOptions, dateProfile, context) {
        var activeRange = dateProfile ? dateProfile.activeRange : null;
        return addSources({}, parseInitialSources(calendarOptions, context), activeRange, context);
    }
    function reduceEventSources(eventSources, action, dateProfile, context) {
        var activeRange = dateProfile ? dateProfile.activeRange : null; // need this check?
        switch (action.type) {
            case 'ADD_EVENT_SOURCES': // already parsed
                return addSources(eventSources, action.sources, activeRange, context);
            case 'REMOVE_EVENT_SOURCE':
                return removeSource(eventSources, action.sourceId);
            case 'PREV': // TODO: how do we track all actions that affect dateProfile :(
            case 'NEXT':
            case 'CHANGE_DATE':
            case 'CHANGE_VIEW_TYPE':
                if (dateProfile) {
                    return fetchDirtySources(eventSources, activeRange, context);
                }
                return eventSources;
            case 'FETCH_EVENT_SOURCES':
                return fetchSourcesByIds(eventSources, action.sourceIds ? // why no type?
                    arrayToHash(action.sourceIds) :
                    excludeStaticSources(eventSources, context), activeRange, context);
            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;
        }
    }
    function reduceEventSourcesNewTimeZone(eventSources, dateProfile, context) {
        var activeRange = dateProfile ? dateProfile.activeRange : null; // need this check?
        return fetchSourcesByIds(eventSources, excludeStaticSources(eventSources, context), activeRange, context);
    }
    function computeEventSourcesLoading(eventSources) {
        for (var sourceId in eventSources) {
            if (eventSources[sourceId].isFetching) {
                return true;
            }
        }
        return false;
    }
    function addSources(eventSourceHash, sources, fetchRange, context) {
        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, context);
        }
        return __assign(__assign({}, eventSourceHash), hash);
    }
    function removeSource(eventSourceHash, sourceId) {
        return filterHash(eventSourceHash, function (eventSource) { return eventSource.sourceId !== sourceId; });
    }
    function fetchDirtySources(sourceHash, fetchRange, context) {
        return fetchSourcesByIds(sourceHash, filterHash(sourceHash, function (eventSource) { return isSourceDirty(eventSource, fetchRange, context); }), fetchRange, context);
    }
    function isSourceDirty(eventSource, fetchRange, context) {
        if (!doesSourceNeedRange(eventSource, context)) {
            return !eventSource.latestFetchId;
        }
        return !context.options.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, context) {
        var nextSources = {};
        for (var sourceId in prevSources) {
            var source = prevSources[sourceId];
            if (sourceIdHash[sourceId]) {
                nextSources[sourceId] = fetchSource(source, fetchRange, context);
            }
            else {
                nextSources[sourceId] = source;
            }
        }
        return nextSources;
    }
    function fetchSource(eventSource, fetchRange, context) {
        var options = context.options, calendarApi = context.calendarApi;
        var sourceDef = context.pluginHooks.eventSourceDefs[eventSource.sourceDefId];
        var fetchId = guid();
        sourceDef.fetch({
            eventSource: eventSource,
            range: fetchRange,
            context: context,
        }, function (res) {
            var rawEvents = res.rawEvents;
            if (options.eventSourceSuccess) {
                rawEvents = options.eventSourceSuccess.call(calendarApi, rawEvents, res.xhr) || rawEvents;
            }
            if (eventSource.success) {
                rawEvents = eventSource.success.call(calendarApi, rawEvents, res.xhr) || rawEvents;
            }
            context.dispatch({
                type: 'RECEIVE_EVENTS',
                sourceId: eventSource.sourceId,
                fetchId: fetchId,
                fetchRange: fetchRange,
                rawEvents: rawEvents,
            });
        }, function (error) {
            console.warn(error.message, error);
            if (options.eventSourceFailure) {
                options.eventSourceFailure.call(calendarApi, error);
            }
            if (eventSource.failure) {
                eventSource.failure(error);
            }
            context.dispatch({
                type: 'RECEIVE_EVENT_ERROR',
                sourceId: eventSource.sourceId,
                fetchId: fetchId,
                fetchRange: fetchRange,
                error: error,
            });
        });
        return __assign(__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(__assign({}, sourceHash), (_a = {}, _a[sourceId] = __assign(__assign({}, eventSource), { isFetching: false, fetchRange: fetchRange }), _a));
        }
        return sourceHash;
    }
    function excludeStaticSources(eventSources, context) {
        return filterHash(eventSources, function (eventSource) { return doesSourceNeedRange(eventSource, context); });
    }
    function parseInitialSources(rawOptions, context) {
        var refiners = buildEventSourceRefiners(context);
        var rawSources = [].concat(rawOptions.eventSources || []);
        var sources = []; // parsed
        if (rawOptions.initialEvents) {
            rawSources.unshift(rawOptions.initialEvents);
        }
        if (rawOptions.events) {
            rawSources.unshift(rawOptions.events);
        }
        for (var _i = 0, rawSources_1 = rawSources; _i < rawSources_1.length; _i++) {
            var rawSource = rawSources_1[_i];
            var source = parseEventSource(rawSource, context, refiners);
            if (source) {
                sources.push(source);
            }
        }
        return sources;
    }
    function doesSourceNeedRange(eventSource, context) {
        var defs = context.pluginHooks.eventSourceDefs;
        return !defs[eventSource.sourceDefId].ignoreRange;
    }

    function reduceDateSelection(currentSelection, action) {
        switch (action.type) {
            case 'UNSELECT_DATES':
                return null;
            case 'SELECT_DATES':
                return action.selection;
            default:
                return currentSelection;
        }
    }

    function reduceSelectedEvent(currentInstanceId, action) {
        switch (action.type) {
            case 'UNSELECT_EVENT':
                return '';
            case 'SELECT_EVENT':
                return action.eventInstanceId;
            default:
                return currentInstanceId;
        }
    }

    function reduceEventDrag(currentDrag, action) {
        var newDrag;
        switch (action.type) {
            case 'UNSET_EVENT_DRAG':
                return null;
            case 'SET_EVENT_DRAG':
                newDrag = action.state;
                return {
                    affectedEvents: newDrag.affectedEvents,
                    mutatedEvents: newDrag.mutatedEvents,
                    isEvent: newDrag.isEvent,
                };
            default:
                return currentDrag;
        }
    }

    function reduceEventResize(currentResize, action) {
        var newResize;
        switch (action.type) {
            case 'UNSET_EVENT_RESIZE':
                return null;
            case 'SET_EVENT_RESIZE':
                newResize = action.state;
                return {
                    affectedEvents: newResize.affectedEvents,
                    mutatedEvents: newResize.mutatedEvents,
                    isEvent: newResize.isEvent,
                };
            default:
                return currentResize;
        }
    }

    function parseToolbars(calendarOptions, calendarOptionOverrides, theme, viewSpecs, calendarApi) {
        var viewsWithButtons = [];
        var headerToolbar = calendarOptions.headerToolbar ? parseToolbar(calendarOptions.headerToolbar, calendarOptions, calendarOptionOverrides, theme, viewSpecs, calendarApi, viewsWithButtons) : null;
        var footerToolbar = calendarOptions.footerToolbar ? parseToolbar(calendarOptions.footerToolbar, calendarOptions, calendarOptionOverrides, theme, viewSpecs, calendarApi, viewsWithButtons) : null;
        return { headerToolbar: headerToolbar, footerToolbar: footerToolbar, viewsWithButtons: viewsWithButtons };
    }
    function parseToolbar(sectionStrHash, calendarOptions, calendarOptionOverrides, theme, viewSpecs, calendarApi, viewsWithButtons) {
        return mapHash(sectionStrHash, function (sectionStr) { return parseSection(sectionStr, calendarOptions, calendarOptionOverrides, theme, viewSpecs, calendarApi, viewsWithButtons); });
    }
    /*
    BAD: querying icons and text here. should be done at render time
    */
    function parseSection(sectionStr, calendarOptions, calendarOptionOverrides, theme, viewSpecs, calendarApi, viewsWithButtons) {
        var isRtl = calendarOptions.direction === 'rtl';
        var calendarCustomButtons = calendarOptions.customButtons || {};
        var calendarButtonTextOverrides = calendarOptionOverrides.buttonText || {};
        var calendarButtonText = calendarOptions.buttonText || {};
        var sectionSubstrs = sectionStr ? sectionStr.split(' ') : [];
        return sectionSubstrs.map(function (buttonGroupStr) { return (buttonGroupStr.split(',').map(function (buttonName) {
            if (buttonName === 'title') {
                return { buttonName: buttonName };
            }
            var customButtonProps;
            var viewSpec;
            var buttonClick;
            var buttonIcon; // only one of these will be set
            var buttonText; // "
            if ((customButtonProps = calendarCustomButtons[buttonName])) {
                buttonClick = function (ev) {
                    if (customButtonProps.click) {
                        customButtonProps.click.call(ev.target, ev, ev.target);
                    }
                };
                (buttonIcon = theme.getCustomButtonIconClass(customButtonProps)) ||
                    (buttonIcon = theme.getIconClass(buttonName, isRtl)) ||
                    (buttonText = customButtonProps.text);
            }
            else if ((viewSpec = viewSpecs[buttonName])) {
                viewsWithButtons.push(buttonName);
                buttonClick = function () {
                    calendarApi.changeView(buttonName);
                };
                (buttonText = viewSpec.buttonTextOverride) ||
                    (buttonIcon = theme.getIconClass(buttonName, isRtl)) ||
                    (buttonText = viewSpec.buttonTextDefault);
            }
            else if (calendarApi[buttonName]) { // a calendarApi method
                buttonClick = function () {
                    calendarApi[buttonName]();
                };
                (buttonText = calendarButtonTextOverrides[buttonName]) ||
                    (buttonIcon = theme.getIconClass(buttonName, isRtl)) ||
                    (buttonText = calendarButtonText[buttonName]);
                //            ^ everything else is considered default
            }
            return { buttonName: buttonName, buttonClick: buttonClick, buttonIcon: buttonIcon, buttonText: buttonText };
        })); });
    }

    var eventSourceDef = {
        ignoreRange: true,
        parseMeta: function (refined) {
            if (Array.isArray(refined.events)) {
                return refined.events;
            }
            return null;
        },
        fetch: function (arg, success) {
            success({
                rawEvents: arg.eventSource.meta,
            });
        },
    };
    var arrayEventSourcePlugin = createPlugin({
        eventSourceDefs: [eventSourceDef],
    });

    var eventSourceDef$1 = {
        parseMeta: function (refined) {
            if (typeof refined.events === 'function') {
                return refined.events;
            }
            return null;
        },
        fetch: function (arg, success, failure) {
            var dateEnv = arg.context.dateEnv;
            var func = arg.eventSource.meta;
            unpromisify(func.bind(null, buildRangeApiWithTimeZone(arg.range, dateEnv)), function (rawEvents) {
                success({ rawEvents: rawEvents }); // needs an object response
            }, failure);
        },
    };
    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) {
                var parsed = false;
                var res = void 0;
                try {
                    res = JSON.parse(xhr.responseText);
                    parsed = true;
                }
                catch (err) {
                    // will handle parsed=false
                }
                if (parsed) {
                    successCallback(res, xhr);
                }
                else {
                    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 JSON_FEED_EVENT_SOURCE_REFINERS = {
        method: String,
        extraParams: identity,
        startParam: String,
        endParam: String,
        timeZoneParam: String,
    };

    var eventSourceDef$2 = {
        parseMeta: function (refined) {
            if (refined.url && (refined.format === 'json' || !refined.format)) {
                return {
                    url: refined.url,
                    format: 'json',
                    method: (refined.method || 'GET').toUpperCase(),
                    extraParams: refined.extraParams,
                    startParam: refined.startParam,
                    endParam: refined.endParam,
                    timeZoneParam: refined.timeZoneParam,
                };
            }
            return null;
        },
        fetch: function (arg, success, failure) {
            var meta = arg.eventSource.meta;
            var requestParams = buildRequestParams(meta, arg.range, arg.context);
            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({
        eventSourceRefiners: JSON_FEED_EVENT_SOURCE_REFINERS,
        eventSourceDefs: [eventSourceDef$2],
    });
    function buildRequestParams(meta, range, context) {
        var dateEnv = context.dateEnv, options = context.options;
        var startParam;
        var endParam;
        var timeZoneParam;
        var customRequestParams;
        var params = {};
        startParam = meta.startParam;
        if (startParam == null) {
            startParam = options.startParam;
        }
        endParam = meta.endParam;
        if (endParam == null) {
            endParam = options.endParam;
        }
        timeZoneParam = meta.timeZoneParam;
        if (timeZoneParam == null) {
            timeZoneParam = options.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 SIMPLE_RECURRING_REFINERS = {
        daysOfWeek: identity,
        startTime: createDuration,
        endTime: createDuration,
        duration: createDuration,
        startRecur: identity,
        endRecur: identity,
    };

    var recurring = {
        parse: function (refined, dateEnv) {
            if (refined.daysOfWeek || refined.startTime || refined.endTime || refined.startRecur || refined.endRecur) {
                var recurringData = {
                    daysOfWeek: refined.daysOfWeek || null,
                    startTime: refined.startTime || null,
                    endTime: refined.endTime || null,
                    startRecur: refined.startRecur ? dateEnv.createMarker(refined.startRecur) : null,
                    endRecur: refined.endRecur ? dateEnv.createMarker(refined.endRecur) : null,
                };
                var duration = void 0;
                if (refined.duration) {
                    duration = refined.duration;
                }
                if (!duration && refined.startTime && refined.endTime) {
                    duration = subtractDurations(refined.endTime, refined.startTime);
                }
                return {
                    allDayGuess: Boolean(!refined.startTime && !refined.endTime),
                    duration: duration,
                    typeData: recurringData,
                };
            }
            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);
            }
            return [];
        },
    };
    var simpleRecurringEventsPlugin = createPlugin({
        recurringTypes: [recurring],
        eventRefiners: SIMPLE_RECURRING_REFINERS,
    });
    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 changeHandlerPlugin = createPlugin({
        optionChangeHandlers: {
            events: function (events, context) {
                handleEventSources([events], context);
            },
            eventSources: handleEventSources,
        },
    });
    /*
    BUG: if `event` was supplied, all previously-given `eventSources` will be wiped out
    */
    function handleEventSources(inputs, context) {
        var unfoundSources = hashValuesToArray(context.getCurrentData().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 += 1) {
                if (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];
            context.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];
            context.calendarApi.addEventSource(newInput);
        }
    }

    function handleDateProfile(dateProfile, context) {
        context.emitter.trigger('datesSet', __assign(__assign({}, buildRangeApiWithTimeZone(dateProfile.activeRange, context.dateEnv)), { view: context.viewApi }));
    }

    function handleEventStore(eventStore, context) {
        var emitter = context.emitter;
        if (emitter.hasHandlers('eventsSet')) {
            emitter.trigger('eventsSet', buildEventApis(eventStore, context));
        }
    }

    /*
    this array is exposed on the root namespace so that UMD plugins can add to it.
    see the rollup-bundles script.
    */
    var globalPlugins = [
        arrayEventSourcePlugin,
        funcEventSourcePlugin,
        jsonFeedEventSourcePlugin,
        simpleRecurringEventsPlugin,
        changeHandlerPlugin,
        createPlugin({
            isLoadingFuncs: [
                function (state) { return computeEventSourcesLoading(state.eventSources); },
            ],
            contentTypeHandlers: {
                html: function () { return ({ render: injectHtml }); },
                domNodes: function () { return ({ render: injectDomNodes }); },
            },
            propSetHandlers: {
                dateProfile: handleDateProfile,
                eventStore: handleEventStore,
            },
        }),
    ];
    function injectHtml(el, html) {
        el.innerHTML = html;
    }
    function injectDomNodes(el, domNodes) {
        var oldNodes = Array.prototype.slice.call(el.childNodes); // TODO: use array util
        var newNodes = Array.prototype.slice.call(domNodes); // TODO: use array util
        if (!isArraysEqual(oldNodes, newNodes)) {
            for (var _i = 0, newNodes_1 = newNodes; _i < newNodes_1.length; _i++) {
                var newNode = newNodes_1[_i];
                el.appendChild(newNode);
            }
            oldNodes.forEach(removeElement);
        }
    }

    var DelayedRunner = /** @class */ (function () {
        function DelayedRunner(drainedOption) {
            this.drainedOption = drainedOption;
            this.isRunning = false;
            this.isDirty = false;
            this.pauseDepths = {};
            this.timeoutId = 0;
        }
        DelayedRunner.prototype.request = function (delay) {
            this.isDirty = true;
            if (!this.isPaused()) {
                this.clearTimeout();
                if (delay == null) {
                    this.tryDrain();
                }
                else {
                    this.timeoutId = setTimeout(// NOT OPTIMAL! TODO: look at debounce
                    this.tryDrain.bind(this), delay);
                }
            }
        };
        DelayedRunner.prototype.pause = function (scope) {
            if (scope === void 0) { scope = ''; }
            var pauseDepths = this.pauseDepths;
            pauseDepths[scope] = (pauseDepths[scope] || 0) + 1;
            this.clearTimeout();
        };
        DelayedRunner.prototype.resume = function (scope, force) {
            if (scope === void 0) { scope = ''; }
            var pauseDepths = this.pauseDepths;
            if (scope in pauseDepths) {
                if (force) {
                    delete pauseDepths[scope];
                }
                else {
                    pauseDepths[scope] -= 1;
                    var depth = pauseDepths[scope];
                    if (depth <= 0) {
                        delete pauseDepths[scope];
                    }
                }
                this.tryDrain();
            }
        };
        DelayedRunner.prototype.isPaused = function () {
            return Object.keys(this.pauseDepths).length;
        };
        DelayedRunner.prototype.tryDrain = function () {
            if (!this.isRunning && !this.isPaused()) {
                this.isRunning = true;
                while (this.isDirty) {
                    this.isDirty = false;
                    this.drained(); // might set isDirty to true again
                }
                this.isRunning = false;
            }
        };
        DelayedRunner.prototype.clear = function () {
            this.clearTimeout();
            this.isDirty = false;
            this.pauseDepths = {};
        };
        DelayedRunner.prototype.clearTimeout = function () {
            if (this.timeoutId) {
                clearTimeout(this.timeoutId);
                this.timeoutId = 0;
            }
        };
        DelayedRunner.prototype.drained = function () {
            if (this.drainedOption) {
                this.drainedOption();
            }
        };
        return DelayedRunner;
    }());

    var TaskRunner = /** @class */ (function () {
        function TaskRunner(runTaskOption, drainedOption) {
            this.runTaskOption = runTaskOption;
            this.drainedOption = drainedOption;
            this.queue = [];
            this.delayedRunner = new DelayedRunner(this.drain.bind(this));
        }
        TaskRunner.prototype.request = function (task, delay) {
            this.queue.push(task);
            this.delayedRunner.request(delay);
        };
        TaskRunner.prototype.pause = function (scope) {
            this.delayedRunner.pause(scope);
        };
        TaskRunner.prototype.resume = function (scope, force) {
            this.delayedRunner.resume(scope, force);
        };
        TaskRunner.prototype.drain = function () {
            var queue = this.queue;
            while (queue.length) {
                var completedTasks = [];
                var task = void 0;
                while ((task = queue.shift())) {
                    this.runTask(task);
                    completedTasks.push(task);
                }
                this.drained(completedTasks);
            } // keep going, in case new tasks were added in the drained handler
        };
        TaskRunner.prototype.runTask = function (task) {
            if (this.runTaskOption) {
                this.runTaskOption(task);
            }
        };
        TaskRunner.prototype.drained = function (completedTasks) {
            if (this.drainedOption) {
                this.drainedOption(completedTasks);
            }
        };
        return TaskRunner;
    }());

    // Computes what the title at the top of the calendarApi should be for this view
    function buildTitle(dateProfile, viewOptions, dateEnv) {
        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 dateEnv.formatRange(range.start, range.end, createFormatter(viewOptions.titleFormat || buildTitleFormat(dateProfile)), {
            isEndExclusive: dateProfile.isRangeAllDay,
            defaultSeparator: viewOptions.titleRangeSeparator,
        });
    }
    // 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 buildTitleFormat(dateProfile) {
        var currentRangeUnit = dateProfile.currentRangeUnit;
        if (currentRangeUnit === 'year') {
            return { year: 'numeric' };
        }
        if (currentRangeUnit === 'month') {
            return { year: 'numeric', month: 'long' }; // like "September 2014"
        }
        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' };
        }
        // one day. longer, like "September 9 2014"
        return { year: 'numeric', month: 'long', day: 'numeric' };
    }

    // in future refactor, do the redux-style function(state=initial) for initial-state