fullcalendar-6.0.2.js

/*!
FullCalendar Premium Bundle v6.0.2
Docs & License: https://fullcalendar.io/docs/initialize-globals
(c) 2022 Adam Shaw
*/
var FullCalendar = (function (exports) {
    'use strict';

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e&&null==e.value?i="value":"download"===i&&!0===l?l="":/ondoubleclick/i.test(i)?i="ondblclick":/^onchange(textarea|input)/i.test(i+t)&&!Z(e.type)?i="oninput":/^onfocus$/i.test(i)?i="onfocusin":/^onblur$/i.test(i)?i="onfocusout":/^on(Ani|Tra|Tou|BeforeInp|Compo)/.test(i)?i=i.toLowerCase():o&&B.test(i)?i=i.replace(/[A-Z0-9]/g,"-$&").toLowerCase():null===l&&(l=void 0),/^oninput$/i.test(i)&&(i=i.toLowerCase(),u[i]&&(i="oninputCapture")),u[i]=l);}"select"==t&&u.multiple&&Array.isArray(u.value)&&(u.value=x$1(e.children).forEach(function(n){n.props.selected=-1!=u.value.indexOf(n.props.value);})),"select"==t&&null!=u.defaultValue&&(u.value=x$1(e.children).forEach(function(n){n.props.selected=u.multiple?-1!=u.defaultValue.indexOf(n.props.value):u.defaultValue==n.props.value;})),n.props=u,e.class!=e.className&&(nn.enumerable="className"in e,null!=e.className&&(u.class=e.className),Object.defineProperty(u,"className",nn));}n.$$typeof=z,tn&&tn(n);};var en=l$1.__r;l$1.__r=function(n){en&&en(n),n.__c;};

    function injectStyles(css) {
        if (!css || typeof document === 'undefined') {
            return;
        }
        const head = document.head || document.getElementsByTagName('head')[0];
        const style = document.createElement('style');
        style.type = 'text/css';
        head.appendChild(style);
        if (style.styleSheet) {
            style.styleSheet.cssText = css;
        }
        else {
            style.appendChild(document.createTextNode(css));
        }
    }

    class DelayedRunner {
        constructor(drainedOption) {
            this.drainedOption = drainedOption;
            this.isRunning = false;
            this.isDirty = false;
            this.pauseDepths = {};
            this.timeoutId = 0;
        }
        request(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);
                }
            }
        }
        pause(scope = '') {
            let { pauseDepths } = this;
            pauseDepths[scope] = (pauseDepths[scope] || 0) + 1;
            this.clearTimeout();
        }
        resume(scope = '', force) {
            let { pauseDepths } = this;
            if (scope in pauseDepths) {
                if (force) {
                    delete pauseDepths[scope];
                }
                else {
                    pauseDepths[scope] -= 1;
                    let depth = pauseDepths[scope];
                    if (depth <= 0) {
                        delete pauseDepths[scope];
                    }
                }
                this.tryDrain();
            }
        }
        isPaused() {
            return Object.keys(this.pauseDepths).length;
        }
        tryDrain() {
            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;
            }
        }
        clear() {
            this.clearTimeout();
            this.isDirty = false;
            this.pauseDepths = {};
        }
        clearTimeout() {
            if (this.timeoutId) {
                clearTimeout(this.timeoutId);
                this.timeoutId = 0;
            }
        }
        drained() {
            if (this.drainedOption) {
                this.drainedOption();
            }
        }
    }

    const { hasOwnProperty } = Object.prototype;
    // 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, complexPropsMap) {
        let dest = {};
        if (complexPropsMap) {
            for (let name in complexPropsMap) {
                let complexObjs = [];
                // collect the trailing object values, stopping when a non-object is discovered
                for (let i = propObjs.length - 1; i >= 0; i -= 1) {
                    let val = propObjs[i][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 (let i = propObjs.length - 1; i >= 0; i -= 1) {
            let props = propObjs[i];
            for (let 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) {
        let filtered = {};
        for (let key in hash) {
            if (func(hash[key], key)) {
                filtered[key] = hash[key];
            }
        }
        return filtered;
    }
    function mapHash(hash, func) {
        let newHash = {};
        for (let key in hash) {
            newHash[key] = func(hash[key], key);
        }
        return newHash;
    }
    function arrayToHash(a) {
        let hash = {};
        for (let item of a) {
            hash[item] = true;
        }
        return hash;
    }
    // TODO: reassess browser support
    // https://caniuse.com/?search=object.values
    function hashValuesToArray(obj) {
        let a = [];
        for (let key in obj) {
            a.push(obj[key]);
        }
        return a;
    }
    function isPropsEqual(obj0, obj1) {
        if (obj0 === obj1) {
            return true;
        }
        for (let key in obj0) {
            if (hasOwnProperty.call(obj0, key)) {
                if (!(key in obj1)) {
                    return false;
                }
            }
        }
        for (let key in obj1) {
            if (hasOwnProperty.call(obj1, key)) {
                if (obj0[key] !== obj1[key]) {
                    return false;
                }
            }
        }
        return true;
    }
    const HANDLER_RE = /^on[A-Z]/;
    function isNonHandlerPropsEqual(obj0, obj1) {
        const keys = getUnequalProps(obj0, obj1);
        for (let key of keys) {
            if (!HANDLER_RE.test(key)) {
                return false;
            }
        }
        return true;
    }
    function getUnequalProps(obj0, obj1) {
        let keys = [];
        for (let key in obj0) {
            if (hasOwnProperty.call(obj0, key)) {
                if (!(key in obj1)) {
                    keys.push(key);
                }
            }
        }
        for (let key in obj1) {
            if (hasOwnProperty.call(obj1, key)) {
                if (obj0[key] !== obj1[key]) {
                    keys.push(key);
                }
            }
        }
        return keys;
    }
    function compareObjs(oldProps, newProps, equalityFuncs = {}) {
        if (oldProps === newProps) {
            return true;
        }
        for (let key in newProps) {
            if (key in oldProps && isObjValsEqual(oldProps[key], newProps[key], equalityFuncs[key])) ;
            else {
                return false;
            }
        }
        // check for props that were omitted in the new
        for (let key in oldProps) {
            if (!(key in newProps)) {
                return false;
            }
        }
        return true;
    }
    /*
    assumed "true" equality for handler names like "onReceiveSomething"
    */
    function isObjValsEqual(val0, val1, comparator) {
        if (val0 === val1 || comparator === true) {
            return true;
        }
        if (comparator) {
            return comparator(val0, val1);
        }
        return false;
    }
    function collectFromHash(hash, startIndex = 0, endIndex, step = 1) {
        let res = [];
        if (endIndex == null) {
            endIndex = Object.keys(hash).length;
        }
        for (let i = startIndex; i < endIndex; i += step) {
            let val = hash[i];
            if (val !== undefined) { // will disregard undefined for sparse arrays
                res.push(val);
            }
        }
        return res;
    }

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

    function memoize(workerFunc, resEquality, teardownFunc) {
        let currentArgs;
        let currentRes;
        return function (...newArgs) {
            if (!currentArgs) {
                currentRes = workerFunc.apply(this, newArgs);
            }
            else if (!isArraysEqual(currentArgs, newArgs)) {
                if (teardownFunc) {
                    teardownFunc(currentRes);
                }
                let res = workerFunc.apply(this, newArgs);
                if (!resEquality || !resEquality(res, currentRes)) {
                    currentRes = res;
                }
            }
            currentArgs = newArgs;
            return currentRes;
        };
    }
    function memoizeObjArg(workerFunc, resEquality, teardownFunc) {
        let currentArg;
        let currentRes;
        return (newArg) => {
            if (!currentArg) {
                currentRes = workerFunc.call(this, newArg);
            }
            else if (!isPropsEqual(currentArg, newArg)) {
                if (teardownFunc) {
                    teardownFunc(currentRes);
                }
                let res = workerFunc.call(this, newArg);
                if (!resEquality || !resEquality(res, currentRes)) {
                    currentRes = res;
                }
            }
            currentArg = newArg;
            return currentRes;
        };
    }
    function memoizeArraylike(// used at all?
    workerFunc, resEquality, teardownFunc) {
        let currentArgSets = [];
        let currentResults = [];
        return (newArgSets) => {
            let currentLen = currentArgSets.length;
            let newLen = newArgSets.length;
            let i = 0;
            for (; i < currentLen; i += 1) {
                if (!newArgSets[i]) { // one of the old sets no longer exists
                    if (teardownFunc) {
                        teardownFunc(currentResults[i]);
                    }
                }
                else if (!isArraysEqual(currentArgSets[i], newArgSets[i])) {
                    if (teardownFunc) {
                        teardownFunc(currentResults[i]);
                    }
                    let res = workerFunc.apply(this, newArgSets[i]);
                    if (!resEquality || !resEquality(res, currentResults[i])) {
                        currentResults[i] = res;
                    }
                }
            }
            for (; i < newLen; i += 1) {
                currentResults[i] = workerFunc.apply(this, newArgSets[i]);
            }
            currentArgSets = newArgSets;
            currentResults.splice(newLen); // remove excess
            return currentResults;
        };
    }
    function memoizeHashlike(workerFunc, resEquality, teardownFunc) {
        let currentArgHash = {};
        let currentResHash = {};
        return (newArgHash) => {
            let newResHash = {};
            for (let key in newArgHash) {
                if (!currentResHash[key]) {
                    newResHash[key] = workerFunc.apply(this, newArgHash[key]);
                }
                else if (!isArraysEqual(currentArgHash[key], newArgHash[key])) {
                    if (teardownFunc) {
                        teardownFunc(currentResHash[key]);
                    }
                    let res = workerFunc.apply(this, newArgHash[key]);
                    newResHash[key] = (resEquality && resEquality(res, currentResHash[key]))
                        ? currentResHash[key]
                        : res;
                }
                else {
                    newResHash[key] = currentResHash[key];
                }
            }
            currentArgHash = newArgHash;
            currentResHash = newResHash;
            return newResHash;
        };
    }

    function removeElement(el) {
        if (el.parentNode) {
            el.parentNode.removeChild(el);
        }
    }
    // Querying
    // ----------------------------------------------------------------------------------------------------------------
    function elementClosest(el, selector) {
        if (el.closest) {
            return el.closest(selector);
            // really bad fallback for IE
            // from https://developer.mozilla.org/en-US/docs/Web/API/Element/closest
        }
        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 elementMatches(el, selector) {
        let method = el.matches || el.matchesSelector || el.msMatchesSelector;
        return method.call(el, selector);
    }
    // accepts multiple subject els
    // returns a real array. good for methods like forEach
    // TODO: accept the document
    function findElements(container, selector) {
        let containers = container instanceof HTMLElement ? [container] : container;
        let allMatches = [];
        for (let i = 0; i < containers.length; i += 1) {
            let matches = containers[i].querySelectorAll(selector);
            for (let j = 0; j < matches.length; j += 1) {
                allMatches.push(matches[j]);
            }
        }
        return allMatches;
    }
    // accepts multiple subject els
    // only queries direct child elements // TODO: rename to findDirectChildren!
    function findDirectChildren(parent, selector) {
        let parents = parent instanceof HTMLElement ? [parent] : parent;
        let allMatches = [];
        for (let i = 0; i < parents.length; i += 1) {
            let childNodes = parents[i].children; // only ever elements
            for (let j = 0; j < childNodes.length; j += 1) {
                let childNode = childNodes[j];
                if (!selector || elementMatches(childNode, selector)) {
                    allMatches.push(childNode);
                }
            }
        }
        return allMatches;
    }
    // Style
    // ----------------------------------------------------------------------------------------------------------------
    const PIXEL_PROP_RE = /(top|left|right|bottom|width|height)$/i;
    function applyStyle(el, props) {
        for (let propName in props) {
            applyStyleProp(el, propName, props[propName]);
        }
    }
    function applyStyleProp(el, name, val) {
        if (val == null) {
            el.style[name] = '';
        }
        else if (typeof val === 'number' && PIXEL_PROP_RE.test(name)) {
            el.style[name] = `${val}px`;
        }
        else {
            el.style[name] = val;
        }
    }
    // Event Handling
    // ----------------------------------------------------------------------------------------------------------------
    // if intercepting bubbled events at the document/window/body level,
    // and want to see originating element (the 'target'), use this util instead
    // of `ev.target` because it goes within web-component boundaries.
    function getEventTargetViaRoot(ev) {
        var _a, _b;
        return (_b = (_a = ev.composedPath) === null || _a === void 0 ? void 0 : _a.call(ev)[0]) !== null && _b !== void 0 ? _b : ev.target;
    }
    // Shadow DOM consuderations
    // ----------------------------------------------------------------------------------------------------------------
    function getElRoot(el) {
        return el.getRootNode ? el.getRootNode() : document;
    }
    // Unique ID for DOM attribute
    let guid$1 = 0;
    function getUniqueDomId() {
        guid$1 += 1;
        return 'fc-dom-' + guid$1;
    }

    // Stops a mouse/touch event from doing it's native browser action
    function preventDefault(ev) {
        ev.preventDefault();
    }
    // Event Delegation
    // ----------------------------------------------------------------------------------------------------------------
    function buildDelegationHandler(selector, handler) {
        return (ev) => {
            let matchedChild = elementClosest(ev.target, selector);
            if (matchedChild) {
                handler.call(matchedChild, ev, matchedChild);
            }
        };
    }
    function listenBySelector(container, eventType, selector, handler) {
        let attachedHandler = buildDelegationHandler(selector, handler);
        container.addEventListener(eventType, attachedHandler);
        return () => {
            container.removeEventListener(eventType, attachedHandler);
        };
    }
    function listenToHoverBySelector(container, selector, onMouseEnter, onMouseLeave) {
        let currentMatchedChild;
        return listenBySelector(container, 'mouseover', selector, (mouseOverEv, matchedChild) => {
            if (matchedChild !== currentMatchedChild) {
                currentMatchedChild = matchedChild;
                onMouseEnter(mouseOverEv, matchedChild);
                let realOnMouseLeave = (mouseLeaveEv) => {
                    currentMatchedChild = null;
                    onMouseLeave(mouseLeaveEv, matchedChild);
                    matchedChild.removeEventListener('mouseleave', realOnMouseLeave);
                };
                // listen to the next mouseleave, and then unattach
                matchedChild.addEventListener('mouseleave', realOnMouseLeave);
            }
        });
    }
    // Animation
    // ----------------------------------------------------------------------------------------------------------------
    const transitionEventNames = [
        'webkitTransitionEnd',
        'otransitionend',
        'oTransitionEnd',
        'msTransitionEnd',
        'transitionend',
    ];
    // triggered only when the next single subsequent transition finishes
    function whenTransitionDone(el, callback) {
        let realCallback = (ev) => {
            callback(ev);
            transitionEventNames.forEach((eventName) => {
                el.removeEventListener(eventName, realCallback);
            });
        };
        transitionEventNames.forEach((eventName) => {
            el.addEventListener(eventName, realCallback); // cross-browser way to determine when the transition finishes
        });
    }
    // ARIA workarounds
    // ----------------------------------------------------------------------------------------------------------------
    function createAriaClickAttrs(handler) {
        return Object.assign({ onClick: handler }, createAriaKeyboardAttrs(handler));
    }
    function createAriaKeyboardAttrs(handler) {
        return {
            tabIndex: 0,
            onKeyDown(ev) {
                if (ev.key === 'Enter' || ev.key === ' ') {
                    handler(ev);
                    ev.preventDefault(); // if space, don't scroll down page
                }
            },
        };
    }

    let guidNumber = 0;
    function guid() {
        guidNumber += 1;
        return String(guidNumber);
    }
    /* FullCalendar-specific DOM Utilities
    ----------------------------------------------------------------------------------------------------------------------*/
    // 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');
    }
    /* 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);
    }
    function parseFieldSpecs(input) {
        let specs = [];
        let tokens = [];
        let i;
        let 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 += 1) {
            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) {
        let i;
        let cmp;
        for (i = 0; i < fieldSpecs.length; i += 1) {
            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 padStart(val, len) {
        let s = String(val);
        return '000'.substr(0, len - s.length) + s;
    }
    function formatWithOrdinals(formatter, args, fallbackText) {
        if (typeof formatter === 'function') {
            return formatter(...args);
        }
        if (typeof formatter === 'string') { // non-blank string
            return args.reduce((str, arg, index) => (str.replace('$' + index, arg || '')), formatter);
        }
        return fallbackText;
    }
    /* Number Utilities
    ----------------------------------------------------------------------------------------------------------------------*/
    function compareNumbers(a, b) {
        return a - b;
    }
    function isInt(n) {
        return n % 1 === 0;
    }
    /* FC-specific DOM dimension stuff
    ----------------------------------------------------------------------------------------------------------------------*/
    function computeSmallestCellWidth(cellEl) {
        let allWidthEl = cellEl.querySelector('.fc-scrollgrid-shrink-frame');
        let contentWidthEl = cellEl.querySelector('.fc-scrollgrid-shrink-cushion');
        if (!allWidthEl) {
            throw new Error('needs fc-scrollgrid-shrink-frame className'); // TODO: use const
        }
        if (!contentWidthEl) {
            throw new Error('needs fc-scrollgrid-shrink-cushion className');
        }
        return cellEl.getBoundingClientRect().width - allWidthEl.getBoundingClientRect().width + // the cell padding+border
            contentWidthEl.getBoundingClientRect().width;
    }

    const DAY_IDS = ['sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'];
    // Adding
    function addWeeks(m, n) {
        let a = dateToUtcArray(m);
        a[2] += n * 7;
        return arrayToUtcDate(a);
    }
    function addDays(m, n) {
        let a = dateToUtcArray(m);
        a[2] += n;
        return arrayToUtcDate(a);
    }
    function addMs(m, n) {
        let a = dateToUtcArray(m);
        a[6] += n;
        return arrayToUtcDate(a);
    }
    // Diffing (all return floats)
    // TODO: why not use ranges?
    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) {
        let m0day = startOfDay(m0);
        let 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) {
        let 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) {
        let y = marker.getUTCFullYear();
        let w = weekOfGivenYear(marker, y, dow, doy);
        if (w < 1) {
            return weekOfGivenYear(marker, y - 1, dow, doy);
        }
        let nextW = weekOfGivenYear(marker, y + 1, dow, doy);
        if (nextW >= 1) {
            return Math.min(w, nextW);
        }
        return w;
    }
    function weekOfGivenYear(marker, year, dow, doy) {
        let firstWeekStart = arrayToUtcDate([year, 0, 1 + firstWeekOffset(year, dow, doy)]);
        let dayStart = startOfDay(marker);
        let 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)
        let fwd = 7 + dow - doy;
        // first-week day local weekday -- which local weekday is fwd
        let 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(...a));
    }
    // Other Utils
    function isValidDate$1(m) {
        return !isNaN(m.valueOf());
    }
    function timeAsMs(m) {
        return m.getUTCHours() * 1000 * 60 * 60 +
            m.getUTCMinutes() * 1000 * 60 +
            m.getUTCSeconds() * 1000 +
            m.getUTCMilliseconds();
    }

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

    const INTERNAL_UNITS = ['years', 'months', 'days', 'milliseconds'];
    const PARSE_RE = /^(-?)(?:(\d+)\.)?(\d+):(\d\d)(?::(\d\d)(?:\.(\d\d\d))?)?/;
    // Parsing and Creation
    function createDuration(input, unit) {
        if (typeof input === 'string') {
            return parseString(input);
        }
        if (typeof input === 'object' && input) { // non-null object
            return parseObject(input);
        }
        if (typeof input === 'number') {
            return parseObject({ [unit || 'milliseconds']: input });
        }
        return null;
    }
    function parseString(s) {
        let m = PARSE_RE.exec(s);
        if (m) {
            let 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 parseObject(obj) {
        let duration = {
            years: obj.years || obj.year || 0,
            months: obj.months || obj.month || 0,
            days: obj.days || obj.day || 0,
            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
        };
        let weeks = obj.weeks || obj.week;
        if (weeks) {
            duration.days += weeks * 7;
            duration.specifiedWeeks = true;
        }
        return duration;
    }
    // Equality
    function durationsEqual(d0, d1) {
        return d0.years === d1.years &&
            d0.months === d1.months &&
            d0.days === d1.days &&
            d0.milliseconds === d1.milliseconds;
    }
    function asCleanDays(dur) {
        if (!dur.years && !dur.months && !dur.milliseconds) {
            return dur.days;
        }
        return 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;