caimei-authentic-website-ross/node_modules/vue/dist/vue.runtime.common.dev.js

/*!
 * Vue.js v2.7.13
 * (c) 2014-2022 Evan You
 * Released under the MIT License.
 */
'use strict';

const emptyObject = Object.freeze({});
const isArray = Array.isArray;
// These helpers produce better VM code in JS engines due to their
// explicitness and function inlining.
function isUndef(v) {
    return v === undefined || v === null;
}
function isDef(v) {
    return v !== undefined && v !== null;
}
function isTrue(v) {
    return v === true;
}
function isFalse(v) {
    return v === false;
}
/**
 * Check if value is primitive.
 */
function isPrimitive(value) {
    return (typeof value === 'string' ||
        typeof value === 'number' ||
        // $flow-disable-line
        typeof value === 'symbol' ||
        typeof value === 'boolean');
}
function isFunction(value) {
    return typeof value === 'function';
}
/**
 * Quick object check - this is primarily used to tell
 * objects from primitive values when we know the value
 * is a JSON-compliant type.
 */
function isObject(obj) {
    return obj !== null && typeof obj === 'object';
}
/**
 * Get the raw type string of a value, e.g., [object Object].
 */
const _toString = Object.prototype.toString;
function toRawType(value) {
    return _toString.call(value).slice(8, -1);
}
/**
 * Strict object type check. Only returns true
 * for plain JavaScript objects.
 */
function isPlainObject(obj) {
    return _toString.call(obj) === '[object Object]';
}
function isRegExp(v) {
    return _toString.call(v) === '[object RegExp]';
}
/**
 * Check if val is a valid array index.
 */
function isValidArrayIndex(val) {
    const n = parseFloat(String(val));
    return n >= 0 && Math.floor(n) === n && isFinite(val);
}
function isPromise(val) {
    return (isDef(val) &&
        typeof val.then === 'function' &&
        typeof val.catch === 'function');
}
/**
 * Convert a value to a string that is actually rendered.
 */
function toString(val) {
    return val == null
        ? ''
        : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
            ? JSON.stringify(val, null, 2)
            : String(val);
}
/**
 * Convert an input value to a number for persistence.
 * If the conversion fails, return original string.
 */
function toNumber(val) {
    const n = parseFloat(val);
    return isNaN(n) ? val : n;
}
/**
 * Make a map and return a function for checking if a key
 * is in that map.
 */
function makeMap(str, expectsLowerCase) {
    const map = Object.create(null);
    const list = str.split(',');
    for (let i = 0; i < list.length; i++) {
        map[list[i]] = true;
    }
    return expectsLowerCase ? val => map[val.toLowerCase()] : val => map[val];
}
/**
 * Check if a tag is a built-in tag.
 */
const isBuiltInTag = makeMap('slot,component', true);
/**
 * Check if an attribute is a reserved attribute.
 */
const isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
/**
 * Remove an item from an array.
 */
function remove$2(arr, item) {
    const len = arr.length;
    if (len) {
        // fast path for the only / last item
        if (item === arr[len - 1]) {
            arr.length = len - 1;
            return;
        }
        const index = arr.indexOf(item);
        if (index > -1) {
            return arr.splice(index, 1);
        }
    }
}
/**
 * Check whether an object has the property.
 */
const hasOwnProperty = Object.prototype.hasOwnProperty;
function hasOwn(obj, key) {
    return hasOwnProperty.call(obj, key);
}
/**
 * Create a cached version of a pure function.
 */
function cached(fn) {
    const cache = Object.create(null);
    return function cachedFn(str) {
        const hit = cache[str];
        return hit || (cache[str] = fn(str));
    };
}
/**
 * Camelize a hyphen-delimited string.
 */
const camelizeRE = /-(\w)/g;
const camelize = cached((str) => {
    return str.replace(camelizeRE, (_, c) => (c ? c.toUpperCase() : ''));
});
/**
 * Capitalize a string.
 */
const capitalize = cached((str) => {
    return str.charAt(0).toUpperCase() + str.slice(1);
});
/**
 * Hyphenate a camelCase string.
 */
const hyphenateRE = /\B([A-Z])/g;
const hyphenate = cached((str) => {
    return str.replace(hyphenateRE, '-$1').toLowerCase();
});
/**
 * Simple bind polyfill for environments that do not support it,
 * e.g., PhantomJS 1.x. Technically, we don't need this anymore
 * since native bind is now performant enough in most browsers.
 * But removing it would mean breaking code that was able to run in
 * PhantomJS 1.x, so this must be kept for backward compatibility.
 */
/* istanbul ignore next */
function polyfillBind(fn, ctx) {
    function boundFn(a) {
        const l = arguments.length;
        return l
            ? l > 1
                ? fn.apply(ctx, arguments)
                : fn.call(ctx, a)
            : fn.call(ctx);
    }
    boundFn._length = fn.length;
    return boundFn;
}
function nativeBind(fn, ctx) {
    return fn.bind(ctx);
}
// @ts-expect-error bind cannot be `undefined`
const bind = Function.prototype.bind ? nativeBind : polyfillBind;
/**
 * Convert an Array-like object to a real Array.
 */
function toArray(list, start) {
    start = start || 0;
    let i = list.length - start;
    const ret = new Array(i);
    while (i--) {
        ret[i] = list[i + start];
    }
    return ret;
}
/**
 * Mix properties into target object.
 */
function extend(to, _from) {
    for (const key in _from) {
        to[key] = _from[key];
    }
    return to;
}
/**
 * Merge an Array of Objects into a single Object.
 */
function toObject(arr) {
    const res = {};
    for (let i = 0; i < arr.length; i++) {
        if (arr[i]) {
            extend(res, arr[i]);
        }
    }
    return res;
}
/* eslint-disable no-unused-vars */
/**
 * Perform no operation.
 * Stubbing args to make Flow happy without leaving useless transpiled code
 * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
 */
function noop(a, b, c) { }
/**
 * Always return false.
 */
const no = (a, b, c) => false;
/* eslint-enable no-unused-vars */
/**
 * Return the same value.
 */
const identity = (_) => _;
/**
 * Check if two values are loosely equal - that is,
 * if they are plain objects, do they have the same shape?
 */
function looseEqual(a, b) {
    if (a === b)
        return true;
    const isObjectA = isObject(a);
    const isObjectB = isObject(b);
    if (isObjectA && isObjectB) {
        try {
            const isArrayA = Array.isArray(a);
            const isArrayB = Array.isArray(b);
            if (isArrayA && isArrayB) {
                return (a.length === b.length &&
                    a.every((e, i) => {
                        return looseEqual(e, b[i]);
                    }));
            }
            else if (a instanceof Date && b instanceof Date) {
                return a.getTime() === b.getTime();
            }
            else if (!isArrayA && !isArrayB) {
                const keysA = Object.keys(a);
                const keysB = Object.keys(b);
                return (keysA.length === keysB.length &&
                    keysA.every(key => {
                        return looseEqual(a[key], b[key]);
                    }));
            }
            else {
                /* istanbul ignore next */
                return false;
            }
        }
        catch (e) {
            /* istanbul ignore next */
            return false;
        }
    }
    else if (!isObjectA && !isObjectB) {
        return String(a) === String(b);
    }
    else {
        return false;
    }
}
/**
 * Return the first index at which a loosely equal value can be
 * found in the array (if value is a plain object, the array must
 * contain an object of the same shape), or -1 if it is not present.
 */
function looseIndexOf(arr, val) {
    for (let i = 0; i < arr.length; i++) {
        if (looseEqual(arr[i], val))
            return i;
    }
    return -1;
}
/**
 * Ensure a function is called only once.
 */
function once(fn) {
    let called = false;
    return function () {
        if (!called) {
            called = true;
            fn.apply(this, arguments);
        }
    };
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is#polyfill
function hasChanged(x, y) {
    if (x === y) {
        return x === 0 && 1 / x !== 1 / y;
    }
    else {
        return x === x || y === y;
    }
}

const SSR_ATTR = 'data-server-rendered';
const ASSET_TYPES = ['component', 'directive', 'filter'];
const LIFECYCLE_HOOKS = [
    'beforeCreate',
    'created',
    'beforeMount',
    'mounted',
    'beforeUpdate',
    'updated',
    'beforeDestroy',
    'destroyed',
    'activated',
    'deactivated',
    'errorCaptured',
    'serverPrefetch',
    'renderTracked',
    'renderTriggered'
];

var config = {
    /**
     * Option merge strategies (used in core/util/options)
     */
    // $flow-disable-line
    optionMergeStrategies: Object.create(null),
    /**
     * Whether to suppress warnings.
     */
    silent: false,
    /**
     * Show production mode tip message on boot?
     */
    productionTip: true,
    /**
     * Whether to enable devtools
     */
    devtools: true,
    /**
     * Whether to record perf
     */
    performance: false,
    /**
     * Error handler for watcher errors
     */
    errorHandler: null,
    /**
     * Warn handler for watcher warns
     */
    warnHandler: null,
    /**
     * Ignore certain custom elements
     */
    ignoredElements: [],
    /**
     * Custom user key aliases for v-on
     */
    // $flow-disable-line
    keyCodes: Object.create(null),
    /**
     * Check if a tag is reserved so that it cannot be registered as a
     * component. This is platform-dependent and may be overwritten.
     */
    isReservedTag: no,
    /**
     * Check if an attribute is reserved so that it cannot be used as a component
     * prop. This is platform-dependent and may be overwritten.
     */
    isReservedAttr: no,
    /**
     * Check if a tag is an unknown element.
     * Platform-dependent.
     */
    isUnknownElement: no,
    /**
     * Get the namespace of an element
     */
    getTagNamespace: noop,
    /**
     * Parse the real tag name for the specific platform.
     */
    parsePlatformTagName: identity,
    /**
     * Check if an attribute must be bound using property, e.g. value
     * Platform-dependent.
     */
    mustUseProp: no,
    /**
     * Perform updates asynchronously. Intended to be used by Vue Test Utils
     * This will significantly reduce performance if set to false.
     */
    async: true,
    /**
     * Exposed for legacy reasons
     */
    _lifecycleHooks: LIFECYCLE_HOOKS
};

/**
 * unicode letters used for parsing html tags, component names and property paths.
 * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
 * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
 */
const unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/;
/**
 * Check if a string starts with $ or _
 */
function isReserved(str) {
    const c = (str + '').charCodeAt(0);
    return c === 0x24 || c === 0x5f;
}
/**
 * Define a property.
 */
function def(obj, key, val, enumerable) {
    Object.defineProperty(obj, key, {
        value: val,
        enumerable: !!enumerable,
        writable: true,
        configurable: true
    });
}
/**
 * Parse simple path.
 */
const bailRE = new RegExp(`[^${unicodeRegExp.source}.$_\\d]`);
function parsePath(path) {
    if (bailRE.test(path)) {
        return;
    }
    const segments = path.split('.');
    return function (obj) {
        for (let i = 0; i < segments.length; i++) {
            if (!obj)
                return;
            obj = obj[segments[i]];
        }
        return obj;
    };
}

// can we use __proto__?
const hasProto = '__proto__' in {};
// Browser environment sniffing
const inBrowser = typeof window !== 'undefined';
const UA = inBrowser && window.navigator.userAgent.toLowerCase();
const isIE = UA && /msie|trident/.test(UA);
const isIE9 = UA && UA.indexOf('msie 9.0') > 0;
const isEdge = UA && UA.indexOf('edge/') > 0;
UA && UA.indexOf('android') > 0;
const isIOS = UA && /iphone|ipad|ipod|ios/.test(UA);
UA && /chrome\/\d+/.test(UA) && !isEdge;
UA && /phantomjs/.test(UA);
const isFF = UA && UA.match(/firefox\/(\d+)/);
// Firefox has a "watch" function on Object.prototype...
// @ts-expect-error firebox support
const nativeWatch = {}.watch;
let supportsPassive = false;
if (inBrowser) {
    try {
        const opts = {};
        Object.defineProperty(opts, 'passive', {
            get() {
                /* istanbul ignore next */
                supportsPassive = true;
            }
        }); // https://github.com/facebook/flow/issues/285
        window.addEventListener('test-passive', null, opts);
    }
    catch (e) { }
}
// this needs to be lazy-evaled because vue may be required before
// vue-server-renderer can set VUE_ENV
let _isServer;
const isServerRendering = () => {
    if (_isServer === undefined) {
        /* istanbul ignore if */
        if (!inBrowser && typeof global !== 'undefined') {
            // detect presence of vue-server-renderer and avoid
            // Webpack shimming the process
            _isServer =
                global['process'] && global['process'].env.VUE_ENV === 'server';
        }
        else {
            _isServer = false;
        }
    }
    return _isServer;
};
// detect devtools
const devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
/* istanbul ignore next */
function isNative(Ctor) {
    return typeof Ctor === 'function' && /native code/.test(Ctor.toString());
}
const hasSymbol = typeof Symbol !== 'undefined' &&
    isNative(Symbol) &&
    typeof Reflect !== 'undefined' &&
    isNative(Reflect.ownKeys);
let _Set; // $flow-disable-line
/* istanbul ignore if */ if (typeof Set !== 'undefined' && isNative(Set)) {
    // use native Set when available.
    _Set = Set;
}
else {
    // a non-standard Set polyfill that only works with primitive keys.
    _Set = class Set {
        constructor() {
            this.set = Object.create(null);
        }
        has(key) {
            return this.set[key] === true;
        }
        add(key) {
            this.set[key] = true;
        }
        clear() {
            this.set = Object.create(null);
        }
    };
}

let currentInstance = null;
/**
 * This is exposed for compatibility with v3 (e.g. some functions in VueUse
 * relies on it). Do not use this internally, just use `currentInstance`.
 *
 * @internal this function needs manual type declaration because it relies
 * on previously manually authored types from Vue 2
 */
function getCurrentInstance() {
    return currentInstance && { proxy: currentInstance };
}
/**
 * @internal
 */
function setCurrentInstance(vm = null) {
    if (!vm)
        currentInstance && currentInstance._scope.off();
    currentInstance = vm;
    vm && vm._scope.on();
}

/**
 * @internal
 */
class VNode {
    constructor(tag, data, children, text, elm, context, componentOptions, asyncFactory) {
        this.tag = tag;
        this.data = data;
        this.children = children;
        this.text = text;
        this.elm = elm;
        this.ns = undefined;
        this.context = context;
        this.fnContext = undefined;
        this.fnOptions = undefined;
        this.fnScopeId = undefined;
        this.key = data && data.key;
        this.componentOptions = componentOptions;
        this.componentInstance = undefined;
        this.parent = undefined;
        this.raw = false;
        this.isStatic = false;
        this.isRootInsert = true;
        this.isComment = false;
        this.isCloned = false;
        this.isOnce = false;
        this.asyncFactory = asyncFactory;
        this.asyncMeta = undefined;
        this.isAsyncPlaceholder = false;
    }
    // DEPRECATED: alias for componentInstance for backwards compat.
    /* istanbul ignore next */
    get child() {
        return this.componentInstance;
    }
}
const createEmptyVNode = (text = '') => {
    const node = new VNode();
    node.text = text;
    node.isComment = true;
    return node;
};
function createTextVNode(val) {
    return new VNode(undefined, undefined, undefined, String(val));
}
// optimized shallow clone
// used for static nodes and slot nodes because they may be reused across
// multiple renders, cloning them avoids errors when DOM manipulations rely
// on their elm reference.
function cloneVNode(vnode) {
    const cloned = new VNode(vnode.tag, vnode.data, 
    // #7975
    // clone children array to avoid mutating original in case of cloning
    // a child.
    vnode.children && vnode.children.slice(), vnode.text, vnode.elm, vnode.context, vnode.componentOptions, vnode.asyncFactory);
    cloned.ns = vnode.ns;
    cloned.isStatic = vnode.isStatic;
    cloned.key = vnode.key;
    cloned.isComment = vnode.isComment;
    cloned.fnContext = vnode.fnContext;
    cloned.fnOptions = vnode.fnOptions;
    cloned.fnScopeId = vnode.fnScopeId;
    cloned.asyncMeta = vnode.asyncMeta;
    cloned.isCloned = true;
    return cloned;
}

let uid$2 = 0;
const pendingCleanupDeps = [];
const cleanupDeps = () => {
    for (let i = 0; i < pendingCleanupDeps.length; i++) {
        const dep = pendingCleanupDeps[i];
        dep.subs = dep.subs.filter(s => s);
        dep._pending = false;
    }
    pendingCleanupDeps.length = 0;
};
/**
 * A dep is an observable that can have multiple
 * directives subscribing to it.
 * @internal
 */
class Dep {
    constructor() {
        // pending subs cleanup
        this._pending = false;
        this.id = uid$2++;
        this.subs = [];
    }
    addSub(sub) {
        this.subs.push(sub);
    }
    removeSub(sub) {
        // #12696 deps with massive amount of subscribers are extremely slow to
        // clean up in Chromium
        // to workaround this, we unset the sub for now, and clear them on
        // next scheduler flush.
        this.subs[this.subs.indexOf(sub)] = null;
        if (!this._pending) {
            this._pending = true;
            pendingCleanupDeps.push(this);
        }
    }
    depend(info) {
        if (Dep.target) {
            Dep.target.addDep(this);
            if (info && Dep.target.onTrack) {
                Dep.target.onTrack(Object.assign({ effect: Dep.target }, info));
            }
        }
    }
    notify(info) {
        // stabilize the subscriber list first
        const subs = this.subs.filter(s => s);
        if (!config.async) {
            // subs aren't sorted in scheduler if not running async
            // we need to sort them now to make sure they fire in correct
            // order
            subs.sort((a, b) => a.id - b.id);
        }
        for (let i = 0, l = subs.length; i < l; i++) {
            const sub = subs[i];
            if (info) {
                sub.onTrigger &&
                    sub.onTrigger(Object.assign({ effect: subs[i] }, info));
            }
            sub.update();
        }
    }
}
// The current target watcher being evaluated.
// This is globally unique because only one watcher
// can be evaluated at a time.
Dep.target = null;
const targetStack = [];
function pushTarget(target) {
    targetStack.push(target);
    Dep.target = target;
}
function popTarget() {
    targetStack.pop();
    Dep.target = targetStack[targetStack.length - 1];
}

/*
 * not type checking this file because flow doesn't play well with
 * dynamically accessing methods on Array prototype
 */
const arrayProto = Array.prototype;
const arrayMethods = Object.create(arrayProto);
const methodsToPatch = [
    'push',
    'pop',
    'shift',
    'unshift',
    'splice',
    'sort',
    'reverse'
];
/**
 * Intercept mutating methods and emit events
 */
methodsToPatch.forEach(function (method) {
    // cache original method
    const original = arrayProto[method];
    def(arrayMethods, method, function mutator(...args) {
        const result = original.apply(this, args);
        const ob = this.__ob__;
        let inserted;
        switch (method) {
            case 'push':
            case 'unshift':
                inserted = args;
                break;
            case 'splice':
                inserted = args.slice(2);
                break;
        }
        if (inserted)
            ob.observeArray(inserted);
        // notify change
        {
            ob.dep.notify({
                type: "array mutation" /* TriggerOpTypes.ARRAY_MUTATION */,
                target: this,
                key: method
            });
        }
        return result;
    });
});

const rawMap = new WeakMap();
function reactive(target) {
    makeReactive(target, false);
    return target;
}
/**
 * Return a shallowly-reactive copy of the original object, where only the root
 * level properties are reactive. It also does not auto-unwrap refs (even at the
 * root level).
 */
function shallowReactive(target) {
    makeReactive(target, true);
    def(target, "__v_isShallow" /* ReactiveFlags.IS_SHALLOW */, true);
    return target;
}
function makeReactive(target, shallow) {
    // if trying to observe a readonly proxy, return the readonly version.
    if (!isReadonly(target)) {
        {
            if (isArray(target)) {
                warn(`Avoid using Array as root value for ${shallow ? `shallowReactive()` : `reactive()`} as it cannot be tracked in watch() or watchEffect(). Use ${shallow ? `shallowRef()` : `ref()`} instead. This is a Vue-2-only limitation.`);
            }
            const existingOb = target && target.__ob__;
            if (existingOb && existingOb.shallow !== shallow) {
                warn(`Target is already a ${existingOb.shallow ? `` : `non-`}shallow reactive object, and cannot be converted to ${shallow ? `` : `non-`}shallow.`);
            }
        }
        const ob = observe(target, shallow, isServerRendering() /* ssr mock reactivity */);
        if (!ob) {
            if (target == null || isPrimitive(target)) {
                warn(`value cannot be made reactive: ${String(target)}`);
            }
            if (isCollectionType(target)) {
                warn(`Vue 2 does not support reactive collection types such as Map or Set.`);
            }
        }
    }
}
function isReactive(value) {
    if (isReadonly(value)) {
        return isReactive(value["__v_raw" /* ReactiveFlags.RAW */]);
    }
    return !!(value && value.__ob__);
}
function isShallow(value) {
    return !!(value && value.__v_isShallow);
}
function isReadonly(value) {
    return !!(value && value.__v_isReadonly);
}
function isProxy(value) {
    return isReactive(value) || isReadonly(value);
}
function toRaw(observed) {
    const raw = observed && observed["__v_raw" /* ReactiveFlags.RAW */];
    return raw ? toRaw(raw) : observed;
}
function markRaw(value) {
    if (isObject(value)) {
        rawMap.set(value, true);
    }
    return value;
}
/**
 * @internal
 */
function isCollectionType(value) {
    const type = toRawType(value);
    return (type === 'Map' || type === 'WeakMap' || type === 'Set' || type === 'WeakSet');
}

const arrayKeys = Object.getOwnPropertyNames(arrayMethods);
const NO_INIITIAL_VALUE = {};
/**
 * In some cases we may want to disable observation inside a component's
 * update computation.
 */
let shouldObserve = true;
function toggleObserving(value) {
    shouldObserve = value;
}
// ssr mock dep
const mockDep = {
    notify: noop,
    depend: noop,
    addSub: noop,
    removeSub: noop
};
/**
 * Observer class that is attached to each observed
 * object. Once attached, the observer converts the target
 * object's property keys into getter/setters that
 * collect dependencies and dispatch updates.
 */
class Observer {
    constructor(value, shallow = false, mock = false) {
        this.value = value;
        this.shallow = shallow;
        this.mock = mock;
        // this.value = value
        this.dep = mock ? mockDep : new Dep();
        this.vmCount = 0;
        def(value, '__ob__', this);
        if (isArray(value)) {
            if (!mock) {
                if (hasProto) {
                    value.__proto__ = arrayMethods;
                    /* eslint-enable no-proto */
                }
                else {
                    for (let i = 0, l = arrayKeys.length; i < l; i++) {
                        const key = arrayKeys[i];
                        def(value, key, arrayMethods[key]);
                    }
                }
            }
            if (!shallow) {
                this.observeArray(value);
            }
        }
        else {
            /**
             * Walk through all properties and convert them into
             * getter/setters. This method should only be called when
             * value type is Object.
             */
            const keys = Object.keys(value);
            for (let i = 0; i < keys.length; i++) {
                const key = keys[i];
                defineReactive(value, key, NO_INIITIAL_VALUE, undefined, shallow, mock);
            }
        }
    }
    /**
     * Observe a list of Array items.
     */
    observeArray(value) {
        for (let i = 0, l = value.length; i < l; i++) {
            observe(value[i], false, this.mock);
        }
    }
}
// helpers
/**
 * Attempt to create an observer instance for a value,
 * returns the new observer if successfully observed,
 * or the existing observer if the value already has one.
 */
function observe(value, shallow, ssrMockReactivity) {
    if (value && hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
        return value.__ob__;
    }
    if (shouldObserve &&
        (ssrMockReactivity || !isServerRendering()) &&
        (isArray(value) || isPlainObject(value)) &&
        Object.isExtensible(value) &&
        !value.__v_skip /* ReactiveFlags.SKIP */ &&
        !rawMap.has(value) &&
        !isRef(value) &&
        !(value instanceof VNode)) {
        return new Observer(value, shallow, ssrMockReactivity);
    }
}
/**
 * Define a reactive property on an Object.
 */
function defineReactive(obj, key, val, customSetter, shallow, mock) {
    const dep = new Dep();
    const property = Object.getOwnPropertyDescriptor(obj, key);
    if (property && property.configurable === false) {
        return;
    }
    // cater for pre-defined getter/setters
    const getter = property && property.get;
    const setter = property && property.set;
    if ((!getter || setter) &&
        (val === NO_INIITIAL_VALUE || arguments.length === 2)) {
        val = obj[key];
    }
    let childOb = !shallow && observe(val, false, mock);
    Object.defineProperty(obj, key, {
        enumerable: true,
        configurable: true,
        get: function reactiveGetter() {
            const value = getter ? getter.call(obj) : val;
            if (Dep.target) {
                {
                    dep.depend({
                        target: obj,
                        type: "get" /* TrackOpTypes.GET */,
                        key
                    });
                }
                if (childOb) {
                    childOb.dep.depend();
                    if (isArray(value)) {
                        dependArray(value);
                    }
                }
            }
            return isRef(value) && !shallow ? value.value : value;
        },
        set: function reactiveSetter(newVal) {
            const value = getter ? getter.call(obj) : val;
            if (!hasChanged(value, newVal)) {
                return;
            }
            if (customSetter) {
                customSetter();
            }
            if (setter) {
                setter.call(obj, newVal);
            }
            else if (getter) {
                // #7981: for accessor properties without setter
                return;
            }
            else if (!shallow && isRef(value) && !isRef(newVal)) {
                value.value = newVal;
                return;
            }
            else {
                val = newVal;
            }
            childOb = !shallow && observe(newVal, false, mock);
            {
                dep.notify({
                    type: "set" /* TriggerOpTypes.SET */,
                    target: obj,
                    key,
                    newValue: newVal,
                    oldValue: value
                });
            }
        }
    });
    return dep;
}
function set(target, key, val) {
    if ((isUndef(target) || isPrimitive(target))) {
        warn(`Cannot set reactive property on undefined, null, or primitive value: ${target}`);
    }
    if (isReadonly(target)) {
        warn(`Set operation on key "${key}" failed: target is readonly.`);
        return;
    }
    const ob = target.__ob__;
    if (isArray(target) && isValidArrayIndex(key)) {
        target.length = Math.max(target.length, key);
        target.splice(key, 1, val);
        // when mocking for SSR, array methods are not hijacked
        if (ob && !ob.shallow && ob.mock) {
            observe(val, false, true);
        }
        return val;
    }
    if (key in target && !(key in Object.prototype)) {
        target[key] = val;
        return val;
    }
    if (target._isVue || (ob && ob.vmCount)) {
        warn('Avoid adding reactive properties to a Vue instance or its root $data ' +
                'at runtime - declare it upfront in the data option.');
        return val;
    }
    if (!ob) {
        target[key] = val;
        return val;
    }
    defineReactive(ob.value, key, val, undefined, ob.shallow, ob.mock);
    {
        ob.dep.notify({
            type: "add" /* TriggerOpTypes.ADD */,
            target: target,
            key,
            newValue: val,
            oldValue: undefined
        });
    }
    return val;
}
function del(target, key) {
    if ((isUndef(target) || isPrimitive(target))) {
        warn(`Cannot delete reactive property on undefined, null, or primitive value: ${target}`);
    }
    if (isArray(target) && isValidArrayIndex(key)) {
        target.splice(key, 1);
        return;
    }
    const ob = target.__ob__;
    if (target._isVue || (ob && ob.vmCount)) {
        warn('Avoid deleting properties on a Vue instance or its root $data ' +
                '- just set it to null.');
        return;
    }
    if (isReadonly(target)) {
        warn(`Delete operation on key "${key}" failed: target is readonly.`);
        return;
    }
    if (!hasOwn(target, key)) {
        return;
    }
    delete target[key];
    if (!ob) {
        return;
    }
    {
        ob.dep.notify({
            type: "delete" /* TriggerOpTypes.DELETE */,
            target: target,
            key
        });
    }
}
/**
 * Collect dependencies on array elements when the array is touched, since
 * we cannot intercept array element access like property getters.
 */
function dependArray(value) {
    for (let e, i = 0, l = value.length; i < l; i++) {
        e = value[i];
        if (e && e.__ob__) {
            e.__ob__.dep.depend();
        }
        if (isArray(e)) {
            dependArray(e);
        }
    }
}

/**
 * @internal
 */
const RefFlag = `__v_isRef`;
function isRef(r) {
    return !!(r && r.__v_isRef === true);
}
function ref$1(value) {
    return createRef(value, false);
}
function shallowRef(value) {
    return createRef(value, true);
}
function createRef(rawValue, shallow) {
    if (isRef(rawValue)) {
        return rawValue;
    }
    const ref = {};
    def(ref, RefFlag, true);
    def(ref, "__v_isShallow" /* ReactiveFlags.IS_SHALLOW */, shallow);
    def(ref, 'dep', defineReactive(ref, 'value', rawValue, null, shallow, isServerRendering()));
    return ref;
}
function triggerRef(ref) {
    if (!ref.dep) {
        warn(`received object is not a triggerable ref.`);
    }
    {
        ref.dep &&
            ref.dep.notify({
                type: "set" /* TriggerOpTypes.SET */,
                target: ref,
                key: 'value'
            });
    }
}
function unref(ref) {
    return isRef(ref) ? ref.value : ref;
}
function proxyRefs(objectWithRefs) {
    if (isReactive(objectWithRefs)) {
        return objectWithRefs;
    }
    const proxy = {};
    const keys = Object.keys(objectWithRefs);
    for (let i = 0; i < keys.length; i++) {
        proxyWithRefUnwrap(proxy, objectWithRefs, keys[i]);
    }
    return proxy;
}
function proxyWithRefUnwrap(target, source, key) {
    Object.defineProperty(target, key, {
        enumerable: true,
        configurable: true,
        get: () => {
            const val = source[key];
            if (isRef(val)) {
                return val.value;
            }
            else {
                const ob = val && val.__ob__;
                if (ob)
                    ob.dep.depend();
                return val;
            }
        },
        set: value => {
            const oldValue = source[key];
            if (isRef(oldValue) && !isRef(value)) {
                oldValue.value = value;
            }
            else {
                source[key] = value;
            }
        }
    });
}
function customRef(factory) {
    const dep = new Dep();
    const { get, set } = factory(() => {
        {
            dep.depend({
                target: ref,
                type: "get" /* TrackOpTypes.GET */,
                key: 'value'
            });
        }
    }, () => {
        {
            dep.notify({
                target: ref,
                type: "set" /* TriggerOpTypes.SET */,
                key: 'value'
            });
        }
    });
    const ref = {
        get value() {
            return get();
        },
        set value(newVal) {
            set(newVal);
        }
    };
    def(ref, RefFlag, true);
    return ref;
}
function toRefs(object) {
    if (!isReactive(object)) {
        warn(`toRefs() expects a reactive object but received a plain one.`);
    }
    const ret = isArray(object) ? new Array(object.length) : {};
    for (const key in object) {
        ret[key] = toRef(object, key);
    }
    return ret;
}
function toRef(object, key, defaultValue) {
    const val = object[key];
    if (isRef(val)) {
        return val;
    }
    const ref = {
        get value() {
            const val = object[key];
            return val === undefined ? defaultValue : val;
        },
        set value(newVal) {
            object[key] = newVal;
        }
    };
    def(ref, RefFlag, true);
    return ref;
}

const rawToReadonlyMap = new WeakMap();
const rawToShallowReadonlyMap = new WeakMap();
function readonly(target) {
    return createReadonly(target, false);
}
function createReadonly(target, shallow) {
    if (!isPlainObject(target)) {
        {
            if (isArray(target)) {
                warn(`Vue 2 does not support readonly arrays.`);
            }
            else if (isCollectionType(target)) {
                warn(`Vue 2 does not support readonly collection types such as Map or Set.`);
            }
            else {
                warn(`value cannot be made readonly: ${typeof target}`);
            }
        }
        return target;
    }
    // already a readonly object
    if (isReadonly(target)) {
        return target;
    }
    // already has a readonly proxy
    const map = shallow ? rawToShallowReadonlyMap : rawToReadonlyMap;
    const existingProxy = map.get(target);
    if (existingProxy) {
        return existingProxy;
    }
    const proxy = Object.create(Object.getPrototypeOf(target));
    map.set(target, proxy);
    def(proxy, "__v_isReadonly" /* ReactiveFlags.IS_READONLY */, true);
    def(proxy, "__v_raw" /* ReactiveFlags.RAW */, target);
    if (isRef(target)) {
        def(proxy, RefFlag, true);
    }
    if (shallow || isShallow(target)) {
        def(proxy, "__v_isShallow" /* ReactiveFlags.IS_SHALLOW */, true);
    }
    const keys = Object.keys(target);
    for (let i = 0; i < keys.length; i++) {
        defineReadonlyProperty(proxy, target, keys[i], shallow);
    }
    return proxy;
}
function defineReadonlyProperty(proxy, target, key, shallow) {
    Object.defineProperty(proxy, key, {
        enumerable: true,
        configurable: true,
        get() {
            const val = target[key];
            return shallow || !isPlainObject(val) ? val : readonly(val);
        },
        set() {
            warn(`Set operation on key "${key}" failed: target is readonly.`);
        }
    });
}
/**
 * Returns a reactive-copy of the original object, where only the root level
 * properties are readonly, and does NOT unwrap refs nor recursively convert
 * returned properties.
 * This is used for creating the props proxy object for stateful components.
 */
function shallowReadonly(target) {
    return createReadonly(target, true);
}

function computed(getterOrOptions, debugOptions) {
    let getter;
    let setter;
    const onlyGetter = isFunction(getterOrOptions);
    if (onlyGetter) {
        getter = getterOrOptions;
        setter = () => {
                warn('Write operation failed: computed value is readonly');
            }
            ;
    }
    else {
        getter = getterOrOptions.get;
        setter = getterOrOptions.set;
    }
    const watcher = isServerRendering()
        ? null
        : new Watcher(currentInstance, getter, noop, { lazy: true });
    if (watcher && debugOptions) {
        watcher.onTrack = debugOptions.onTrack;
        watcher.onTrigger = debugOptions.onTrigger;
    }
    const ref = {
        // some libs rely on the presence effect for checking computed refs
        // from normal refs, but the implementation doesn't matter
        effect: watcher,
        get value() {
            if (watcher) {
                if (watcher.dirty) {
                    watcher.evaluate();
                }
                if (Dep.target) {
                    if (Dep.target.onTrack) {
                        Dep.target.onTrack({
                            effect: Dep.target,
                            target: ref,
                            type: "get" /* TrackOpTypes.GET */,
                            key: 'value'
                        });
                    }
                    watcher.depend();
                }
                return watcher.value;
            }
            else {
                return getter();
            }
        },
        set value(newVal) {
            setter(newVal);
        }
    };
    def(ref, RefFlag, true);
    def(ref, "__v_isReadonly" /* ReactiveFlags.IS_READONLY */, onlyGetter);
    return ref;
}

const WATCHER = `watcher`;
const WATCHER_CB = `${WATCHER} callback`;
const WATCHER_GETTER = `${WATCHER} getter`;
const WATCHER_CLEANUP = `${WATCHER} cleanup`;
// Simple effect.
function watchEffect(effect, options) {
    return doWatch(effect, null, options);
}
function watchPostEffect(effect, options) {
    return doWatch(effect, null, (Object.assign(Object.assign({}, options), { flush: 'post' }) ));
}
function watchSyncEffect(effect, options) {
    return doWatch(effect, null, (Object.assign(Object.assign({}, options), { flush: 'sync' }) ));
}
// initial value for watchers to trigger on undefined initial values
const INITIAL_WATCHER_VALUE = {};
// implementation
function watch(source, cb, options) {
    if (typeof cb !== 'function') {
        warn(`\`watch(fn, options?)\` signature has been moved to a separate API. ` +
            `Use \`watchEffect(fn, options?)\` instead. \`watch\` now only ` +
            `supports \`watch(source, cb, options?) signature.`);
    }
    return doWatch(source, cb, options);
}
function doWatch(source, cb, { immediate, deep, flush = 'pre', onTrack, onTrigger } = emptyObject) {
    if (!cb) {
        if (immediate !== undefined) {
            warn(`watch() "immediate" option is only respected when using the ` +
                `watch(source, callback, options?) signature.`);
        }
        if (deep !== undefined) {
            warn(`watch() "deep" option is only respected when using the ` +
                `watch(source, callback, options?) signature.`);
        }
    }
    const warnInvalidSource = (s) => {
        warn(`Invalid watch source: ${s}. A watch source can only be a getter/effect ` +
            `function, a ref, a reactive object, or an array of these types.`);
    };
    const instance = currentInstance;
    const call = (fn, type, args = null) => invokeWithErrorHandling(fn, null, args, instance, type);
    let getter;
    let forceTrigger = false;
    let isMultiSource = false;
    if (isRef(source)) {
        getter = () => source.value;
        forceTrigger = isShallow(source);
    }
    else if (isReactive(source)) {
        getter = () => {
            source.__ob__.dep.depend();
            return source;
        };
        deep = true;
    }
    else if (isArray(source)) {
        isMultiSource = true;
        forceTrigger = source.some(s => isReactive(s) || isShallow(s));
        getter = () => source.map(s => {
            if (isRef(s)) {
                return s.value;
            }
            else if (isReactive(s)) {
                return traverse(s);
            }
            else if (isFunction(s)) {
                return call(s, WATCHER_GETTER);
            }
            else {
                warnInvalidSource(s);
            }
        });
    }
    else if (isFunction(source)) {
        if (cb) {
            // getter with cb
            getter = () => call(source, WATCHER_GETTER);
        }
        else {
            // no cb -> simple effect
            getter = () => {
                if (instance && instance._isDestroyed) {
                    return;
                }
                if (cleanup) {
                    cleanup();
                }
                return call(source, WATCHER, [onCleanup]);
            };
        }
    }
    else {
        getter = noop;
        warnInvalidSource(source);
    }
    if (cb && deep) {
        const baseGetter = getter;
        getter = () => traverse(baseGetter());
    }
    let cleanup;
    let onCleanup = (fn) => {
        cleanup = watcher.onStop = () => {
            call(fn, WATCHER_CLEANUP);
        };
    };
    // in SSR there is no need to setup an actual effect, and it should be noop
    // unless it's eager
    if (isServerRendering()) {
        // we will also not call the invalidate callback (+ runner is not set up)
        onCleanup = noop;
        if (!cb) {
            getter();
        }
        else if (immediate) {
            call(cb, WATCHER_CB, [
                getter(),
                isMultiSource ? [] : undefined,
                onCleanup
            ]);
        }
        return noop;
    }
    const watcher = new Watcher(currentInstance, getter, noop, {
        lazy: true
    });
    watcher.noRecurse = !cb;
    let oldValue = isMultiSource ? [] : INITIAL_WATCHER_VALUE;
    // overwrite default run
    watcher.run = () => {
        if (!watcher.active) {
            return;
        }
        if (cb) {
            // watch(source, cb)
            const newValue = watcher.get();
            if (deep ||
                forceTrigger ||
                (isMultiSource
                    ? newValue.some((v, i) => hasChanged(v, oldValue[i]))
                    : hasChanged(newValue, oldValue))) {
                // cleanup before running cb again
                if (cleanup) {
                    cleanup();
                }
                call(cb, WATCHER_CB, [
                    newValue,
                    // pass undefined as the old value when it's changed for the first time
                    oldValue === INITIAL_WATCHER_VALUE ? undefined : oldValue,
                    onCleanup
                ]);
                oldValue = newValue;
            }
        }
        else {
            // watchEffect
            watcher.get();
        }
    };
    if (flush === 'sync') {
        watcher.update = watcher.run;
    }
    else if (flush === 'post') {
        watcher.post = true;
        watcher.update = () => queueWatcher(watcher);
    }
    else {
        // pre
        watcher.update = () => {
            if (instance && instance === currentInstance && !instance._isMounted) {
                // pre-watcher triggered before
                const buffer = instance._preWatchers || (instance._preWatchers = []);
                if (buffer.indexOf(watcher) < 0)
                    buffer.push(watcher);
            }
            else {
                queueWatcher(watcher);
            }
        };
    }
    {
        watcher.onTrack = onTrack;
        watcher.onTrigger = onTrigger;
    }
    // initial run
    if (cb) {
        if (immediate) {
            watcher.run();
        }
        else {
            oldValue = watcher.get();
        }
    }
    else if (flush === 'post' && instance) {
        instance.$once('hook:mounted', () => watcher.get());
    }
    else {
        watcher.get();
    }
    return () => {
        watcher.teardown();
    };
}

let activeEffectScope;
class EffectScope {
    constructor(detached = false) {
        this.detached = detached;
        /**
         * @internal
         */
        this.active = true;
        /**
         * @internal
         */
        this.effects = [];
        /**
         * @internal
         */
        this.cleanups = [];
        this.parent = activeEffectScope;
        if (!detached && activeEffectScope) {
            this.index =
                (activeEffectScope.scopes || (activeEffectScope.scopes = [])).push(this) - 1;
        }
    }
    run(fn) {
        if (this.active) {
            const currentEffectScope = activeEffectScope;
            try {
                activeEffectScope = this;
                return fn();
            }
            finally {
                activeEffectScope = currentEffectScope;
            }
        }
        else {
            warn(`cannot run an inactive effect scope.`);
        }
    }
    /**
     * This should only be called on non-detached scopes
     * @internal
     */
    on() {
        activeEffectScope = this;
    }
    /**
     * This should only be called on non-detached scopes
     * @internal
     */
    off() {
        activeEffectScope = this.parent;
    }
    stop(fromParent) {
        if (this.active) {
            let i, l;
            for (i = 0, l = this.effects.length; i < l; i++) {
                this.effects[i].teardown();
            }
            for (i = 0, l = this.cleanups.length; i < l; i++) {
                this.cleanups[i]();
            }
            if (this.scopes) {
                for (i = 0, l = this.scopes.length; i < l; i++) {
                    this.scopes[i].stop(true);
                }
            }
            // nested scope, dereference from parent to avoid memory leaks
            if (!this.detached && this.parent && !fromParent) {
                // optimized O(1) removal
                const last = this.parent.scopes.pop();
                if (last && last !== this) {
                    this.parent.scopes[this.index] = last;
                    last.index = this.index;
                }
            }
            this.parent = undefined;
            this.active = false;
        }
    }
}
function effectScope(detached) {
    return new EffectScope(detached);
}
/**
 * @internal
 */
function recordEffectScope(effect, scope = activeEffectScope) {
    if (scope && scope.active) {
        scope.effects.push(effect);
    }
}
function getCurrentScope() {
    return activeEffectScope;
}
function onScopeDispose(fn) {
    if (activeEffectScope) {
        activeEffectScope.cleanups.push(fn);
    }
    else {
        warn(`onScopeDispose() is called when there is no active effect scope` +
            ` to be associated with.`);
    }
}

function provide(key, value) {
    if (!currentInstance) {
        {
            warn(`provide() can only be used inside setup().`);
        }
    }
    else {
        // TS doesn't allow symbol as index type
        resolveProvided(currentInstance)[key] = value;
    }
}
function resolveProvided(vm) {
    // by default an instance inherits its parent's provides object
    // but when it needs to provide values of its own, it creates its
    // own provides object using parent provides object as prototype.
    // this way in `inject` we can simply look up injections from direct
    // parent and let the prototype chain do the work.
    const existing = vm._provided;
    const parentProvides = vm.$parent && vm.$parent._provided;
    if (parentProvides === existing) {
        return (vm._provided = Object.create(parentProvides));
    }
    else {
        return existing;
    }
}
function inject(key, defaultValue, treatDefaultAsFactory = false) {
    // fallback to `currentRenderingInstance` so that this can be called in
    // a functional component
    const instance = currentInstance;
    if (instance) {
        // #2400
        // to support `app.use` plugins,
        // fallback to appContext's `provides` if the instance is at root
        const provides = instance.$parent && instance.$parent._provided;
        if (provides && key in provides) {
            // TS doesn't allow symbol as index type
            return provides[key];
        }
        else if (arguments.length > 1) {
            return treatDefaultAsFactory && isFunction(defaultValue)
                ? defaultValue.call(instance)
                : defaultValue;
        }
        else {
            warn(`injection "${String(key)}" not found.`);
        }
    }
    else {
        warn(`inject() can only be used inside setup() or functional components.`);
    }
}

const normalizeEvent = cached((name) => {
    const passive = name.charAt(0) === '&';
    name = passive ? name.slice(1) : name;
    const once = name.charAt(0) === '~'; // Prefixed last, checked first
    name = once ? name.slice(1) : name;
    const capture = name.charAt(0) === '!';
    name = capture ? name.slice(1) : name;
    return {
        name,
        once,
        capture,
        passive
    };
});
function createFnInvoker(fns, vm) {
    function invoker() {
        const fns = invoker.fns;
        if (isArray(fns)) {
            const cloned = fns.slice();
            for (let i = 0; i < cloned.length; i++) {
                invokeWithErrorHandling(cloned[i], null, arguments, vm, `v-on handler`);
            }
        }
        else {
            // return handler return value for single handlers
            return invokeWithErrorHandling(fns, null, arguments, vm, `v-on handler`);
        }
    }
    invoker.fns = fns;
    return invoker;
}
function updateListeners(on, oldOn, add, remove, createOnceHandler, vm) {
    let name, cur, old, event;
    for (name in on) {
        cur = on[name];
        old = oldOn[name];
        event = normalizeEvent(name);
        if (isUndef(cur)) {
            warn(`Invalid handler for event "${event.name}": got ` + String(cur), vm);
        }
        else if (isUndef(old)) {
            if (isUndef(cur.fns)) {
                cur = on[name] = createFnInvoker(cur, vm);
            }
            if (isTrue(event.once)) {
                cur = on[name] = createOnceHandler(event.name, cur, event.capture);
            }
            add(event.name, cur, event.capture, event.passive, event.params);
        }
        else if (cur !== old) {
            old.fns = cur;
            on[name] = old;
        }
    }
    for (name in oldOn) {
        if (isUndef(on[name])) {
            event = normalizeEvent(name);
            remove(event.name, oldOn[name], event.capture);
        }
    }
}

function mergeVNodeHook(def, hookKey, hook) {
    if (def instanceof VNode) {
        def = def.data.hook || (def.data.hook = {});
    }
    let invoker;
    const oldHook = def[hookKey];
    function wrappedHook() {
        hook.apply(this, arguments);
        // important: remove merged hook to ensure it's called only once
        // and prevent memory leak
        remove$2(invoker.fns, wrappedHook);
    }
    if (isUndef(oldHook)) {
        // no existing hook
        invoker = createFnInvoker([wrappedHook]);
    }
    else {
        /* istanbul ignore if */
        if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
            // already a merged invoker
            invoker = oldHook;
            invoker.fns.push(wrappedHook);
        }
        else {
            // existing plain hook
            invoker = createFnInvoker([oldHook, wrappedHook]);
        }
    }
    invoker.merged = true;
    def[hookKey] = invoker;
}

function extractPropsFromVNodeData(data, Ctor, tag) {
    // we are only extracting raw values here.
    // validation and default values are handled in the child
    // component itself.
    const propOptions = Ctor.options.props;
    if (isUndef(propOptions)) {
        return;
    }
    const res = {};
    const { attrs, props } = data;
    if (isDef(attrs) || isDef(props)) {
        for (const key in propOptions) {
            const altKey = hyphenate(key);
            {
                const keyInLowerCase = key.toLowerCase();
                if (key !== keyInLowerCase && attrs && hasOwn(attrs, keyInLowerCase)) {
                    tip(`Prop "${keyInLowerCase}" is passed to component ` +
                        `${formatComponentName(
                        // @ts-expect-error tag is string
                        tag || Ctor)}, but the declared prop name is` +
                        ` "${key}". ` +
                        `Note that HTML attributes are case-insensitive and camelCased ` +
                        `props need to use their kebab-case equivalents when using in-DOM ` +
                        `templates. You should probably use "${altKey}" instead of "${key}".`);
                }
            }
            checkProp(res, props, key, altKey, true) ||
                checkProp(res, attrs, key, altKey, false);
        }
    }
    return res;
}
function checkProp(res, hash, key, altKey, preserve) {
    if (isDef(hash)) {
        if (hasOwn(hash, key)) {
            res[key] = hash[key];
            if (!preserve) {
                delete hash[key];
            }
            return true;
        }
        else if (hasOwn(hash, altKey)) {
            res[key] = hash[altKey];
            if (!preserve) {
                delete hash[altKey];
            }
            return true;
        }
    }
    return false;
}

// The template compiler attempts to minimize the need for normalization by
// statically analyzing the template at compile time.
//
// For plain HTML markup, normalization can be completely skipped because the
// generated render function is guaranteed to return Array<VNode>. There are
// two cases where extra normalization is needed:
// 1. When the children contains components - because a functional component
// may return an Array instead of a single root. In this case, just a simple
// normalization is needed - if any child is an Array, we flatten the whole
// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
// because functional components already normalize their own children.
function simpleNormalizeChildren(children) {
    for (let i = 0; i < children.length; i++) {
        if (isArray(children[i])) {
            return Array.prototype.concat.apply([], children);
        }
    }
    return children;
}
// 2. When the children contains constructs that always generated nested Arrays,
// e.g. <template>, <slot>, v-for, or when the children is provided by user
// with hand-written render functions / JSX. In such cases a full normalization
// is needed to cater to all possible types of children values.
function normalizeChildren(children) {
    return isPrimitive(children)
        ? [createTextVNode(children)]
        : isArray(children)
            ? normalizeArrayChildren(children)
            : undefined;
}
function isTextNode(node) {
    return isDef(node) && isDef(node.text) && isFalse(node.isComment);
}
function normalizeArrayChildren(children, nestedIndex) {
    const res = [];
    let i, c, lastIndex, last;
    for (i = 0; i < children.length; i++) {
        c = children[i];
        if (isUndef(c) || typeof c === 'boolean')
            continue;
        lastIndex = res.length - 1;
        last = res[lastIndex];
        //  nested
        if (isArray(c)) {
            if (c.length > 0) {
                c = normalizeArrayChildren(c, `${nestedIndex || ''}_${i}`);
                // merge adjacent text nodes
                if (isTextNode(c[0]) && isTextNode(last)) {
                    res[lastIndex] = createTextVNode(last.text + c[0].text);
                    c.shift();
                }
                res.push.apply(res, c);
            }
        }
        else if (isPrimitive(c)) {
            if (isTextNode(last)) {
                // merge adjacent text nodes
                // this is necessary for SSR hydration because text nodes are
                // essentially merged when rendered to HTML strings
                res[lastIndex] = createTextVNode(last.text + c);
            }
            else if (c !== '') {
                // convert primitive to vnode
                res.push(createTextVNode(c));
            }
        }
        else {
            if (isTextNode(c) && isTextNode(last)) {
                // merge adjacent text nodes
                res[lastIndex] = createTextVNode(last.text + c.text);
            }
            else {
                // default key for nested array children (likely generated by v-for)
                if (isTrue(children._isVList) &&
                    isDef(c.tag) &&
                    isUndef(c.key) &&
                    isDef(nestedIndex)) {
                    c.key = `__vlist${nestedIndex}_${i}__`;
                }
                res.push(c);
            }
        }
    }
    return res;
}

/**
 * Runtime helper for rendering v-for lists.
 */
function renderList(val, render) {
    let ret = null, i, l, keys, key;
    if (isArray(val) || typeof val === 'string') {
        ret = new Array(val.length);
        for (i = 0, l = val.length; i < l; i++) {
            ret[i] = render(val[i], i);
        }
    }
    else if (typeof val === 'number') {
        ret = new Array(val);
        for (i = 0; i < val; i++) {
            ret[i] = render(i + 1, i);
        }
    }
    else if (isObject(val)) {
        if (hasSymbol && val[Symbol.iterator]) {
            ret = [];
            const iterator = val[Symbol.iterator]();
            let result = iterator.next();
            while (!result.done) {
                ret.push(render(result.value, ret.length));
                result = iterator.next();
            }
        }
        else {
            keys = Object.keys(val);
            ret = new Array(keys.length);
            for (i = 0, l = keys.length; i < l; i++) {
                key = keys[i];
                ret[i] = render(val[key], key, i);
            }
        }
    }
    if (!isDef(ret)) {
        ret = [];
    }
    ret._isVList = true;
    return ret;
}

/**
 * Runtime helper for rendering <slot>
 */
function renderSlot(name, fallbackRender, props, bindObject) {
    const scopedSlotFn = this.$scopedSlots[name];
    let nodes;
    if (scopedSlotFn) {
        // scoped slot
        props = props || {};
        if (bindObject) {
            if (!isObject(bindObject)) {
                warn('slot v-bind without argument expects an Object', this);
            }
            props = extend(extend({}, bindObject), props);
        }
        nodes =
            scopedSlotFn(props) ||
                (isFunction(fallbackRender) ? fallbackRender() : fallbackRender);
    }
    else {
        nodes =
            this.$slots[name] ||
                (isFunction(fallbackRender) ? fallbackRender() : fallbackRender);
    }
    const target = props && props.slot;
    if (target) {
        return this.$createElement('template', { slot: target }, nodes);
    }
    else {
        return nodes;
    }
}

/**
 * Runtime helper for resolving filters
 */
function resolveFilter(id) {
    return resolveAsset(this.$options, 'filters', id, true) || identity;
}

function isKeyNotMatch(expect, actual) {
    if (isArray(expect)) {
        return expect.indexOf(actual) === -1;
    }
    else {
        return expect !== actual;
    }
}
/**
 * Runtime helper for checking keyCodes from config.
 * exposed as Vue.prototype._k
 * passing in eventKeyName as last argument separately for backwards compat
 */
function checkKeyCodes(eventKeyCode, key, builtInKeyCode, eventKeyName, builtInKeyName) {
    const mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
    if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
        return isKeyNotMatch(builtInKeyName, eventKeyName);
    }
    else if (mappedKeyCode) {
        return isKeyNotMatch(mappedKeyCode, eventKeyCode);
    }
    else if (eventKeyName) {
        return hyphenate(eventKeyName) !== key;
    }
    return eventKeyCode === undefined;
}

/**
 * Runtime helper for merging v-bind="object" into a VNode's data.
 */
function bindObjectProps(data, tag, value, asProp, isSync) {
    if (value) {
        if (!isObject(value)) {
            warn('v-bind without argument expects an Object or Array value', this);
        }
        else {
            if (isArray(value)) {
                value = toObject(value);
            }
            let hash;
            for (const key in value) {
                if (key === 'class' || key === 'style' || isReservedAttribute(key)) {
                    hash = data;
                }
                else {
                    const type = data.attrs && data.attrs.type;
                    hash =
                        asProp || config.mustUseProp(tag, type, key)
                            ? data.domProps || (data.domProps = {})
                            : data.attrs || (data.attrs = {});
                }
                const camelizedKey = camelize(key);
                const hyphenatedKey = hyphenate(key);
                if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
                    hash[key] = value[key];
                    if (isSync) {
                        const on = data.on || (data.on = {});
                        on[`update:${key}`] = function ($event) {
                            value[key] = $event;
                        };
                    }
                }
            }
        }
    }
    return data;
}

/**
 * Runtime helper for rendering static trees.
 */
function renderStatic(index, isInFor) {
    const cached = this._staticTrees || (this._staticTrees = []);
    let tree = cached[index];
    // if has already-rendered static tree and not inside v-for,
    // we can reuse the same tree.
    if (tree && !isInFor) {
        return tree;
    }
    // otherwise, render a fresh tree.
    tree = cached[index] = this.$options.staticRenderFns[index].call(this._renderProxy, this._c, this // for render fns generated for functional component templates
    );
    markStatic(tree, `__static__${index}`, false);
    return tree;
}
/**
 * Runtime helper for v-once.
 * Effectively it means marking the node as static with a unique key.
 */
function markOnce(tree, index, key) {
    markStatic(tree, `__once__${index}${key ? `_${key}` : ``}`, true);
    return tree;
}
function markStatic(tree, key, isOnce) {
    if (isArray(tree)) {
        for (let i = 0; i < tree.length; i++) {
            if (tree[i] && typeof tree[i] !== 'string') {
                markStaticNode(tree[i], `${key}_${i}`, isOnce);
            }
        }
    }
    else {
        markStaticNode(tree, key, isOnce);
    }
}
function markStaticNode(node, key, isOnce) {
    node.isStatic = true;
    node.key = key;
    node.isOnce = isOnce;
}

function bindObjectListeners(data, value) {
    if (value) {
        if (!isPlainObject(value)) {
            warn('v-on without argument expects an Object value', this);
        }
        else {
            const on = (data.on = data.on ? extend({}, data.on) : {});
            for (const key in value) {
                const existing = on[key];
                const ours = value[key];
                on[key] = existing ? [].concat(existing, ours) : ours;
            }
        }
    }
    return data;
}

function resolveScopedSlots(fns, res, 
// the following are added in 2.6
hasDynamicKeys, contentHashKey) {
    res = res || { $stable: !hasDynamicKeys };
    for (let i = 0; i < fns.length; i++) {
        const slot = fns[i];
        if (isArray(slot)) {
            resolveScopedSlots(slot, res, hasDynamicKeys);
        }
        else if (slot) {
            // marker for reverse proxying v-slot without scope on this.$slots
            // @ts-expect-error
            if (slot.proxy) {
                // @ts-expect-error
                slot.fn.proxy = true;
            }
            res[slot.key] = slot.fn;
        }
    }
    if (contentHashKey) {
        res.$key = contentHashKey;
    }
    return res;
}

// helper to process dynamic keys for dynamic arguments in v-bind and v-on.
function bindDynamicKeys(baseObj, values) {
    for (let i = 0; i < values.length; i += 2) {
        const key = values[i];
        if (typeof key === 'string' && key) {
            baseObj[values[i]] = values[i + 1];
        }
        else if (key !== '' && key !== null) {
            // null is a special value for explicitly removing a binding
            warn(`Invalid value for dynamic directive argument (expected string or null): ${key}`, this);
        }
    }
    return baseObj;
}
// helper to dynamically append modifier runtime markers to event names.
// ensure only append when value is already string, otherwise it will be cast
// to string and cause the type check to miss.
function prependModifier(value, symbol) {
    return typeof value === 'string' ? symbol + value : value;
}

function installRenderHelpers(target) {
    target._o = markOnce;
    target._n = toNumber;
    target._s = toString;
    target._l = renderList;
    target._t = renderSlot;
    target._q = looseEqual;
    target._i = looseIndexOf;
    target._m = renderStatic;
    target._f = resolveFilter;
    target._k = checkKeyCodes;
    target._b = bindObjectProps;
    target._v = createTextVNode;
    target._e = createEmptyVNode;
    target._u = resolveScopedSlots;
    target._g = bindObjectListeners;
    target._d = bindDynamicKeys;
    target._p = prependModifier;
}

/**
 * Runtime helper for resolving raw children VNodes into a slot object.
 */
function resolveSlots(children, context) {
    if (!children || !children.length) {
        return {};
    }
    const slots = {};
    for (let i = 0, l = children.length; i < l; i++) {
        const child = children[i];
        const data = child.data;
        // remove slot attribute if the node is resolved as a Vue slot node
        if (data && data.attrs && data.attrs.slot) {
            delete data.attrs.slot;
        }
        // named slots should only be respected if the vnode was rendered in the
        // same context.
        if ((child.context === context || child.fnContext === context) &&
            data &&
            data.slot != null) {
            const name = data.slot;
            const slot = slots[name] || (slots[name] = []);
            if (child.tag === 'template') {
                slot.push.apply(slot, child.children || []);
            }
            else {
                slot.push(child);
            }
        }
        else {
            (slots.default || (slots.default = [])).push(child);
        }
    }
    // ignore slots that contains only whitespace
    for (const name in slots) {
        if (slots[name].every(isWhitespace)) {
            delete slots[name];
        }
    }
    return slots;
}
function isWhitespace(node) {
    return (node.isComment && !node.asyncFactory) || node.text === ' ';
}

function isAsyncPlaceholder(node) {
    // @ts-expect-error not really boolean type
    return node.isComment && node.asyncFactory;
}

function normalizeScopedSlots(ownerVm, scopedSlots, normalSlots, prevScopedSlots) {
    let res;
    const hasNormalSlots = Object.keys(normalSlots).length > 0;
    const isStable = scopedSlots ? !!scopedSlots.$stable : !hasNormalSlots;
    const key = scopedSlots && scopedSlots.$key;
    if (!scopedSlots) {
        res = {};
    }
    else if (scopedSlots._normalized) {
        // fast path 1: child component re-render only, parent did not change
        return scopedSlots._normalized;
    }
    else if (isStable &&
        prevScopedSlots &&
        prevScopedSlots !== emptyObject &&
        key === prevScopedSlots.$key &&
        !hasNormalSlots &&
        !prevScopedSlots.$hasNormal) {
        // fast path 2: stable scoped slots w/ no normal slots to proxy,
        // only need to normalize once
        return prevScopedSlots;
    }
    else {
        res = {};
        for (const key in scopedSlots) {
            if (scopedSlots[key] && key[0] !== '$') {
                res[key] = normalizeScopedSlot(ownerVm, normalSlots, key, scopedSlots[key]);
            }
        }
    }
    // expose normal slots on scopedSlots
    for (const key in normalSlots) {
        if (!(key in res)) {
            res[key] = proxyNormalSlot(normalSlots, key);
        }
    }
    // avoriaz seems to mock a non-extensible $scopedSlots object
    // and when that is passed down this would cause an error
    if (scopedSlots && Object.isExtensible(scopedSlots)) {
        scopedSlots._normalized = res;
    }
    def(res, '$stable', isStable);
    def(res, '$key', key);
    def(res, '$hasNormal', hasNormalSlots);
    return res;
}
function normalizeScopedSlot(vm, normalSlots, key, fn) {
    const normalized = function () {
        const cur = currentInstance;
        setCurrentInstance(vm);
        let res = arguments.length ? fn.apply(null, arguments) : fn({});
        res =
            res && typeof res === 'object' && !isArray(res)
                ? [res] // single vnode
                : normalizeChildren(res);
        const vnode = res && res[0];
        setCurrentInstance(cur);
        return res &&
            (!vnode ||
                (res.length === 1 && vnode.isComment && !isAsyncPlaceholder(vnode))) // #9658, #10391
            ? undefined
            : res;
    };
    // this is a slot using the new v-slot syntax without scope. although it is
    // compiled as a scoped slot, render fn users would expect it to be present
    // on this.$slots because the usage is semantically a normal slot.
    if (fn.proxy) {
        Object.defineProperty(normalSlots, key, {
            get: normalized,
            enumerable: true,
            configurable: true
        });
    }
    return normalized;
}
function proxyNormalSlot(slots, key) {
    return () => slots[key];
}

function initSetup(vm) {
    const options = vm.$options;
    const setup = options.setup;
    if (setup) {
        const ctx = (vm._setupContext = createSetupContext(vm));
        setCurrentInstance(vm);
        pushTarget();
        const setupResult = invokeWithErrorHandling(setup, null, [vm._props || shallowReactive({}), ctx], vm, `setup`);
        popTarget();
        setCurrentInstance();
        if (isFunction(setupResult)) {
            // render function
            // @ts-ignore
            options.render = setupResult;
        }
        else if (isObject(setupResult)) {
            // bindings
            if (setupResult instanceof VNode) {
                warn(`setup() should not return VNodes directly - ` +
                    `return a render function instead.`);
            }
            vm._setupState = setupResult;
            // __sfc indicates compiled bindings from <script setup>
            if (!setupResult.__sfc) {
                for (const key in setupResult) {
                    if (!isReserved(key)) {
                        proxyWithRefUnwrap(vm, setupResult, key);
                    }
                    else {
                        warn(`Avoid using variables that start with _ or $ in setup().`);
                    }
                }
            }
            else {
                // exposed for compiled render fn
                const proxy = (vm._setupProxy = {});
                for (const key in setupResult) {
                    if (key !== '__sfc') {
                        proxyWithRefUnwrap(proxy, setupResult, key);
                    }
                }
            }
        }
        else if (setupResult !== undefined) {
            warn(`setup() should return an object. Received: ${setupResult === null ? 'null' : typeof setupResult}`);
        }
    }
}
function createSetupContext(vm) {
    let exposeCalled = false;
    return {
        get attrs() {
            if (!vm._attrsProxy) {
                const proxy = (vm._attrsProxy = {});
                def(proxy, '_v_attr_proxy', true);
                syncSetupProxy(proxy, vm.$attrs, emptyObject, vm, '$attrs');
            }
            return vm._attrsProxy;
        },
        get listeners() {
            if (!vm._listenersProxy) {
                const proxy = (vm._listenersProxy = {});
                syncSetupProxy(proxy, vm.$listeners, emptyObject, vm, '$listeners');
            }
            return vm._listenersProxy;
        },
        get slots() {
            return initSlotsProxy(vm);
        },
        emit: bind(vm.$emit, vm),
        expose(exposed) {
            {
                if (exposeCalled) {
                    warn(`expose() should be called only once per setup().`, vm);
                }
                exposeCalled = true;
            }
            if (exposed) {
                Object.keys(exposed).forEach(key => proxyWithRefUnwrap(vm, exposed, key));
            }
        }
    };
}
function syncSetupProxy(to, from, prev, instance, type) {
    let changed = false;
    for (const key in from) {
        if (!(key in to)) {
            changed = true;
            defineProxyAttr(to, key, instance, type);
        }
        else if (from[key] !== prev[key]) {
            changed = true;
        }
    }
    for (const key in to) {
        if (!(key in from)) {
            changed = true;
            delete to[key];
        }
    }
    return changed;
}
function defineProxyAttr(proxy, key, instance, type) {
    Object.defineProperty(proxy, key, {
        enumerable: true,
        configurable: true,
        get() {
            return instance[type][key];
        }
    });
}
function initSlotsProxy(vm) {
    if (!vm._slotsProxy) {
        syncSetupSlots((vm._slotsProxy = {}), vm.$scopedSlots);
    }
    return vm._slotsProxy;
}
function syncSetupSlots(to, from) {
    for (const key in from) {
        to[key] = from[key];
    }
    for (const key in to) {
        if (!(key in from)) {
            delete to[key];
        }
    }
}
/**
 * @internal use manual type def because public setup context type relies on
 * legacy VNode types
 */
function useSlots() {
    return getContext().slots;
}
/**
 * @internal use manual type def because public setup context type relies on
 * legacy VNode types
 */
function useAttrs() {
    return getContext().attrs;
}
/**
 * Vue 2 only
 * @internal use manual type def because public setup context type relies on
 * legacy VNode types
 */
function useListeners() {
    return getContext().listeners;
}
function getContext() {
    if (!currentInstance) {
        warn(`useContext() called without active instance.`);
    }
    const vm = currentInstance;
    return vm._setupContext || (vm._setupContext = createSetupContext(vm));
}
/**
 * Runtime helper for merging default declarations. Imported by compiled code
 * only.
 * @internal
 */
function mergeDefaults(raw, defaults) {
    const props = isArray(raw)
        ? raw.reduce((normalized, p) => ((normalized[p] = {}), normalized), {})
        : raw;
    for (const key in defaults) {
        const opt = props[key];
        if (opt) {
            if (isArray(opt) || isFunction(opt)) {
                props[key] = { type: opt, default: defaults[key] };
            }
            else {
                opt.default = defaults[key];
            }
        }
        else if (opt === null) {
            props[key] = { default: defaults[key] };
        }
        else {
            warn(`props default key "${key}" has no corresponding declaration.`);
        }
    }
    return props;
}

function initRender(vm) {
    vm._vnode = null; // the root of the child tree
    vm._staticTrees = null; // v-once cached trees
    const options = vm.$options;
    const parentVnode = (vm.$vnode = options._parentVnode); // the placeholder node in parent tree
    const renderContext = parentVnode && parentVnode.context;
    vm.$slots = resolveSlots(options._renderChildren, renderContext);
    vm.$scopedSlots = parentVnode
        ? normalizeScopedSlots(vm.$parent, parentVnode.data.scopedSlots, vm.$slots)
        : emptyObject;
    // bind the createElement fn to this instance
    // so that we get proper render context inside it.
    // args order: tag, data, children, normalizationType, alwaysNormalize
    // internal version is used by render functions compiled from templates
    // @ts-expect-error
    vm._c = (a, b, c, d) => createElement$1(vm, a, b, c, d, false);
    // normalization is always applied for the public version, used in
    // user-written render functions.
    // @ts-expect-error
    vm.$createElement = (a, b, c, d) => createElement$1(vm, a, b, c, d, true);
    // $attrs & $listeners are exposed for easier HOC creation.
    // they need to be reactive so that HOCs using them are always updated
    const parentData = parentVnode && parentVnode.data;
    /* istanbul ignore else */
    {
        defineReactive(vm, '$attrs', (parentData && parentData.attrs) || emptyObject, () => {
            !isUpdatingChildComponent && warn(`$attrs is readonly.`, vm);
        }, true);
        defineReactive(vm, '$listeners', options._parentListeners || emptyObject, () => {
            !isUpdatingChildComponent && warn(`$listeners is readonly.`, vm);
        }, true);
    }
}
let currentRenderingInstance = null;
function renderMixin(Vue) {
    // install runtime convenience helpers
    installRenderHelpers(Vue.prototype);
    Vue.prototype.$nextTick = function (fn) {
        return nextTick(fn, this);
    };
    Vue.prototype._render = function () {
        const vm = this;
        const { render, _parentVnode } = vm.$options;
        if (_parentVnode && vm._isMounted) {
            vm.$scopedSlots = normalizeScopedSlots(vm.$parent, _parentVnode.data.scopedSlots, vm.$slots, vm.$scopedSlots);
            if (vm._slotsProxy) {
                syncSetupSlots(vm._slotsProxy, vm.$scopedSlots);
            }
        }
        // set parent vnode. this allows render functions to have access
        // to the data on the placeholder node.
        vm.$vnode = _parentVnode;
        // render self
        let vnode;
        try {
            // There's no need to maintain a stack because all render fns are called
            // separately from one another. Nested component's render fns are called
            // when parent component is patched.
            setCurrentInstance(vm);
            currentRenderingInstance = vm;
            vnode = render.call(vm._renderProxy, vm.$createElement);
        }
        catch (e) {
            handleError(e, vm, `render`);
            // return error render result,
            // or previous vnode to prevent render error causing blank component
            /* istanbul ignore else */
            if (vm.$options.renderError) {
                try {
                    vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
                }
                catch (e) {
                    handleError(e, vm, `renderError`);
                    vnode = vm._vnode;
                }
            }
            else {
                vnode = vm._vnode;
            }
        }
        finally {
            currentRenderingInstance = null;
            setCurrentInstance();
        }
        // if the returned array contains only a single node, allow it
        if (isArray(vnode) && vnode.length === 1) {
            vnode = vnode[0];
        }
        // return empty vnode in case the render function errored out
        if (!(vnode instanceof VNode)) {
            if (isArray(vnode)) {
                warn('Multiple root nodes returned from render function. Render function ' +
                    'should return a single root node.', vm);
            }
            vnode = createEmptyVNode();
        }
        // set parent
        vnode.parent = _parentVnode;
        return vnode;
    };
}

function ensureCtor(comp, base) {
    if (comp.__esModule || (hasSymbol && comp[Symbol.toStringTag] === 'Module')) {
        comp = comp.default;
    }
    return isObject(comp) ? base.extend(comp) : comp;
}
function createAsyncPlaceholder(factory, data, context, children, tag) {
    const node = createEmptyVNode();
    node.asyncFactory = factory;
    node.asyncMeta = { data, context, children, tag };
    return node;
}
function resolveAsyncComponent(factory, baseCtor) {
    if (isTrue(factory.error) && isDef(factory.errorComp)) {
        return factory.errorComp;
    }
    if (isDef(factory.resolved)) {
        return factory.resolved;
    }
    const owner = currentRenderingInstance;
    if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {
        // already pending
        factory.owners.push(owner);
    }
    if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
        return factory.loadingComp;
    }
    if (owner && !isDef(factory.owners)) {
        const owners = (factory.owners = [owner]);
        let sync = true;
        let timerLoading = null;
        let timerTimeout = null;
        owner.$on('hook:destroyed', () => remove$2(owners, owner));
        const forceRender = (renderCompleted) => {
            for (let i = 0, l = owners.length; i < l; i++) {
                owners[i].$forceUpdate();
            }
            if (renderCompleted) {
                owners.length = 0;
                if (timerLoading !== null) {
                    clearTimeout(timerLoading);
                    timerLoading = null;
                }
                if (timerTimeout !== null) {
                    clearTimeout(timerTimeout);
                    timerTimeout = null;
                }
            }
        };
        const resolve = once((res) => {
            // cache resolved
            factory.resolved = ensureCtor(res, baseCtor);
            // invoke callbacks only if this is not a synchronous resolve
            // (async resolves are shimmed as synchronous during SSR)
            if (!sync) {
                forceRender(true);
            }
            else {
                owners.length = 0;
            }
        });
        const reject = once(reason => {
            warn(`Failed to resolve async component: ${String(factory)}` +
                    (reason ? `\nReason: ${reason}` : ''));
            if (isDef(factory.errorComp)) {
                factory.error = true;
                forceRender(true);
            }
        });
        const res = factory(resolve, reject);
        if (isObject(res)) {
            if (isPromise(res)) {
                // () => Promise
                if (isUndef(factory.resolved)) {
                    res.then(resolve, reject);
                }
            }
            else if (isPromise(res.component)) {
                res.component.then(resolve, reject);
                if (isDef(res.error)) {
                    factory.errorComp = ensureCtor(res.error, baseCtor);
                }
                if (isDef(res.loading)) {
                    factory.loadingComp = ensureCtor(res.loading, baseCtor);
                    if (res.delay === 0) {
                        factory.loading = true;
                    }
                    else {
                        // @ts-expect-error NodeJS timeout type
                        timerLoading = setTimeout(() => {
                            timerLoading = null;
                            if (isUndef(factory.resolved) && isUndef(factory.error)) {
                                factory.loading = true;
                                forceRender(false);
                            }
                        }, res.delay || 200);
                    }
                }
                if (isDef(res.timeout)) {
                    // @ts-expect-error NodeJS timeout type
                    timerTimeout = setTimeout(() => {
                        timerTimeout = null;
                        if (isUndef(factory.resolved)) {
                            reject(`timeout (${res.timeout}ms)` );
                        }
                    }, res.timeout);
                }
            }
        }
        sync = false;
        // return in case resolved synchronously
        return factory.loading ? factory.loadingComp : factory.resolved;
    }
}

function getFirstComponentChild(children) {
    if (isArray(children)) {
        for (let i = 0; i < children.length; i++) {
            const c = children[i];
            if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
                return c;
            }
        }
    }
}

const SIMPLE_NORMALIZE = 1;
const ALWAYS_NORMALIZE = 2;
// wrapper function for providing a more flexible interface
// without getting yelled at by flow
function createElement$1(context, tag, data, children, normalizationType, alwaysNormalize) {
    if (isArray(data) || isPrimitive(data)) {
        normalizationType = children;
        children = data;
        data = undefined;
    }
    if (isTrue(alwaysNormalize)) {
        normalizationType = ALWAYS_NORMALIZE;
    }
    return _createElement(context, tag, data, children, normalizationType);
}
function _createElement(context, tag, data, children, normalizationType) {
    if (isDef(data) && isDef(data.__ob__)) {
        warn(`Avoid using observed data object as vnode data: ${JSON.stringify(data)}\n` + 'Always create fresh vnode data objects in each render!', context);
        return createEmptyVNode();
    }
    // object syntax in v-bind
    if (isDef(data) && isDef(data.is)) {
        tag = data.is;
    }
    if (!tag) {
        // in case of component :is set to falsy value
        return createEmptyVNode();
    }
    // warn against non-primitive key
    if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)) {
        warn('Avoid using non-primitive value as key, ' +
            'use string/number value instead.', context);
    }
    // support single function children as default scoped slot
    if (isArray(children) && isFunction(children[0])) {
        data = data || {};
        data.scopedSlots = { default: children[0] };
        children.length = 0;
    }
    if (normalizationType === ALWAYS_NORMALIZE) {
        children = normalizeChildren(children);
    }
    else if (normalizationType === SIMPLE_NORMALIZE) {
        children = simpleNormalizeChildren(children);
    }
    let vnode, ns;
    if (typeof tag === 'string') {
        let Ctor;
        ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
        if (config.isReservedTag(tag)) {
            // platform built-in elements
            if (isDef(data) &&
                isDef(data.nativeOn) &&
                data.tag !== 'component') {
                warn(`The .native modifier for v-on is only valid on components but it was used on <${tag}>.`, context);
            }
            vnode = new VNode(config.parsePlatformTagName(tag), data, children, undefined, undefined, context);
        }
        else if ((!data || !data.pre) &&
            isDef((Ctor = resolveAsset(context.$options, 'components', tag)))) {
            // component
            vnode = createComponent(Ctor, data, context, children, tag);
        }
        else {
            // unknown or unlisted namespaced elements
            // check at runtime because it may get assigned a namespace when its
            // parent normalizes children
            vnode = new VNode(tag, data, children, undefined, undefined, context);
        }
    }
    else {
        // direct component options / constructor
        vnode = createComponent(tag, data, context, children);
    }
    if (isArray(vnode)) {
        return vnode;
    }
    else if (isDef(vnode)) {
        if (isDef(ns))
            applyNS(vnode, ns);
        if (isDef(data))
            registerDeepBindings(data);
        return vnode;
    }
    else {
        return createEmptyVNode();
    }
}
function applyNS(vnode, ns, force) {
    vnode.ns = ns;
    if (vnode.tag === 'foreignObject') {
        // use default namespace inside foreignObject
        ns = undefined;
        force = true;
    }
    if (isDef(vnode.children)) {
        for (let i = 0, l = vnode.children.length; i < l; i++) {
            const child = vnode.children[i];
            if (isDef(child.tag) &&
                (isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
                applyNS(child, ns, force);
            }
        }
    }
}
// ref #5318
// necessary to ensure parent re-render when deep bindings like :style and
// :class are used on slot nodes
function registerDeepBindings(data) {
    if (isObject(data.style)) {
        traverse(data.style);
    }
    if (isObject(data.class)) {
        traverse(data.class);
    }
}

/**
 * @internal this function needs manual public type declaration because it relies
 * on previously manually authored types from Vue 2
 */
function h(type, props, children) {
    if (!currentInstance) {
        warn(`globally imported h() can only be invoked when there is an active ` +
                `component instance, e.g. synchronously in a component's render or setup function.`);
    }
    return createElement$1(currentInstance, type, props, children, 2, true);
}

function handleError(err, vm, info) {
    // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
    // See: https://github.com/vuejs/vuex/issues/1505
    pushTarget();
    try {
        if (vm) {
            let cur = vm;
            while ((cur = cur.$parent)) {
                const hooks = cur.$options.errorCaptured;
                if (hooks) {
                    for (let i = 0; i < hooks.length; i++) {
                        try {
                            const capture = hooks[i].call(cur, err, vm, info) === false;
                            if (capture)
                                return;
                        }
                        catch (e) {
                            globalHandleError(e, cur, 'errorCaptured hook');
                        }
                    }
                }
            }
        }
        globalHandleError(err, vm, info);
    }
    finally {
        popTarget();
    }
}
function invokeWithErrorHandling(handler, context, args, vm, info) {
    let res;
    try {
        res = args ? handler.apply(context, args) : handler.call(context);
        if (res && !res._isVue && isPromise(res) && !res._handled) {
            res.catch(e => handleError(e, vm, info + ` (Promise/async)`));
            res._handled = true;
        }
    }
    catch (e) {
        handleError(e, vm, info);
    }
    return res;
}
function globalHandleError(err, vm, info) {
    if (config.errorHandler) {
        try {
            return config.errorHandler.call(null, err, vm, info);
        }
        catch (e) {
            // if the user intentionally throws the original error in the handler,
            // do not log it twice
            if (e !== err) {
                logError(e, null, 'config.errorHandler');
            }
        }
    }
    logError(err, vm, info);
}
function logError(err, vm, info) {
    {
        warn(`Error in ${info}: "${err.toString()}"`, vm);
    }
    /* istanbul ignore else */
    if (inBrowser && typeof console !== 'undefined') {
        console.error(err);
    }
    else {
        throw err;
    }
}

/* globals MutationObserver */
let isUsingMicroTask = false;
const callbacks = [];
let pending = false;
function flushCallbacks() {
    pending = false;
    const copies = callbacks.slice(0);
    callbacks.length = 0;
    for (let i = 0; i < copies.length; i++) {
        copies[i]();
    }
}
// Here we have async deferring wrappers using microtasks.
// In 2.5 we used (macro) tasks (in combination with microtasks).
// However, it has subtle problems when state is changed right before repaint
// (e.g. #6813, out-in transitions).
// Also, using (macro) tasks in event handler would cause some weird behaviors
// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
// So we now use microtasks everywhere, again.
// A major drawback of this tradeoff is that there are some scenarios
// where microtasks have too high a priority and fire in between supposedly
// sequential events (e.g. #4521, #6690, which have workarounds)
// or even between bubbling of the same event (#6566).
let timerFunc;
// The nextTick behavior leverages the microtask queue, which can be accessed
// via either native Promise.then or MutationObserver.
// MutationObserver has wider support, however it is seriously bugged in
// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
// completely stops working after triggering a few times... so, if native
// Promise is available, we will use it:
/* istanbul ignore next, $flow-disable-line */
if (typeof Promise !== 'undefined' && isNative(Promise)) {
    const p = Promise.resolve();
    timerFunc = () => {
        p.then(flushCallbacks);
        // In problematic UIWebViews, Promise.then doesn't completely break, but
        // it can get stuck in a weird state where callbacks are pushed into the
        // microtask queue but the queue isn't being flushed, until the browser
        // needs to do some other work, e.g. handle a timer. Therefore we can
        // "force" the microtask queue to be flushed by adding an empty timer.
        if (isIOS)
            setTimeout(noop);
    };
    isUsingMicroTask = true;
}
else if (!isIE &&
    typeof MutationObserver !== 'undefined' &&
    (isNative(MutationObserver) ||
        // PhantomJS and iOS 7.x
        MutationObserver.toString() === '[object MutationObserverConstructor]')) {
    // Use MutationObserver where native Promise is not available,
    // e.g. PhantomJS, iOS7, Android 4.4
    // (#6466 MutationObserver is unreliable in IE11)
    let counter = 1;
    const observer = new MutationObserver(flushCallbacks);
    const textNode = document.createTextNode(String(counter));
    observer.observe(textNode, {
        characterData: true
    });
    timerFunc = () => {
        counter = (counter + 1) % 2;
        textNode.data = String(counter);
    };
    isUsingMicroTask = true;
}
else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
    // Fallback to setImmediate.
    // Technically it leverages the (macro) task queue,
    // but it is still a better choice than setTimeout.
    timerFunc = () => {
        setImmediate(flushCallbacks);
    };
}
else {
    // Fallback to setTimeout.
    timerFunc = () => {
        setTimeout(flushCallbacks, 0);
    };
}
/**
 * @internal
 */
function nextTick(cb, ctx) {
    let _resolve;
    callbacks.push(() => {
        if (cb) {
            try {
                cb.call(ctx);
            }
            catch (e) {
                handleError(e, ctx, 'nextTick');
            }
        }
        else if (_resolve) {
            _resolve(ctx);
        }
    });
    if (!pending) {
        pending = true;
        timerFunc();
    }
    // $flow-disable-line
    if (!cb && typeof Promise !== 'undefined') {
        return new Promise(resolve => {
            _resolve = resolve;
        });
    }
}

function useCssModule(name = '$style') {
    /* istanbul ignore else */
    {
        if (!currentInstance) {
            warn(`useCssModule must be called inside setup()`);
            return emptyObject;
        }
        const mod = currentInstance[name];
        if (!mod) {
            warn(`Current instance does not have CSS module named "${name}".`);
            return emptyObject;
        }
        return mod;
    }
}

/**
 * Runtime helper for SFC's CSS variable injection feature.
 * @private
 */
function useCssVars(getter) {
    if (!inBrowser && !false)
        return;
    const instance = currentInstance;
    if (!instance) {
        warn(`useCssVars is called without current active component instance.`);
        return;
    }
    watchPostEffect(() => {
        const el = instance.$el;
        const vars = getter(instance, instance._setupProxy);
        if (el && el.nodeType === 1) {
            const style = el.style;
            for (const key in vars) {
                style.setProperty(`--${key}`, vars[key]);
            }
        }
    });
}

/**
 * v3-compatible async component API.
 * @internal the type is manually declared in <root>/types/v3-define-async-component.d.ts
 * because it relies on existing manual types
 */
function defineAsyncComponent(source) {
    if (isFunction(source)) {
        source = { loader: source };
    }
    const { loader, loadingComponent, errorComponent, delay = 200, timeout, // undefined = never times out
    suspensible = false, // in Vue 3 default is true
    onError: userOnError } = source;
    if (suspensible) {
        warn(`The suspensiblbe option for async components is not supported in Vue2. It is ignored.`);
    }
    let pendingRequest = null;
    let retries = 0;
    const retry = () => {
        retries++;
        pendingRequest = null;
        return load();
    };
    const load = () => {
        let thisRequest;
        return (pendingRequest ||
            (thisRequest = pendingRequest =
                loader()
                    .catch(err => {
                    err = err instanceof Error ? err : new Error(String(err));
                    if (userOnError) {
                        return new Promise((resolve, reject) => {
                            const userRetry = () => resolve(retry());
                            const userFail = () => reject(err);
                            userOnError(err, userRetry, userFail, retries + 1);
                        });
                    }
                    else {
                        throw err;
                    }
                })
                    .then((comp) => {
                    if (thisRequest !== pendingRequest && pendingRequest) {
                        return pendingRequest;
                    }
                    if (!comp) {
                        warn(`Async component loader resolved to undefined. ` +
                            `If you are using retry(), make sure to return its return value.`);
                    }
                    // interop module default
                    if (comp &&
                        (comp.__esModule || comp[Symbol.toStringTag] === 'Module')) {
                        comp = comp.default;
                    }
                    if (comp && !isObject(comp) && !isFunction(comp)) {
                        throw new Error(`Invalid async component load result: ${comp}`);
                    }
                    return comp;
                })));
    };
    return () => {
        const component = load();
        return {
            component,
            delay,
            timeout,
            error: errorComponent,
            loading: loadingComponent
        };
    };
}

function createLifeCycle(hookName) {
    return (fn, target = currentInstance) => {
        if (!target) {
            warn(`${formatName(hookName)} is called when there is no active component instance to be ` +
                    `associated with. ` +
                    `Lifecycle injection APIs can only be used during execution of setup().`);
            return;
        }
        return injectHook(target, hookName, fn);
    };
}
function formatName(name) {
    if (name === 'beforeDestroy') {
        name = 'beforeUnmount';
    }
    else if (name === 'destroyed') {
        name = 'unmounted';
    }
    return `on${name[0].toUpperCase() + name.slice(1)}`;
}
function injectHook(instance, hookName, fn) {
    const options = instance.$options;
    options[hookName] = mergeLifecycleHook(options[hookName], fn);
}
const onBeforeMount = createLifeCycle('beforeMount');
const onMounted = createLifeCycle('mounted');
const onBeforeUpdate = createLifeCycle('beforeUpdate');
const onUpdated = createLifeCycle('updated');
const onBeforeUnmount = createLifeCycle('beforeDestroy');
const onUnmounted = createLifeCycle('destroyed');
const onActivated = createLifeCycle('activated');
const onDeactivated = createLifeCycle('deactivated');
const onServerPrefetch = createLifeCycle('serverPrefetch');
const onRenderTracked = createLifeCycle('renderTracked');
const onRenderTriggered = createLifeCycle('renderTriggered');
const injectErrorCapturedHook = createLifeCycle('errorCaptured');
function onErrorCaptured(hook, target = currentInstance) {
    injectErrorCapturedHook(hook, target);
}

/**
 * Note: also update dist/vue.runtime.mjs when adding new exports to this file.
 */
const version = '2.7.13';
/**
 * @internal type is manually declared in <root>/types/v3-define-component.d.ts
 */
function defineComponent(options) {
    return options;
}

var vca = /*#__PURE__*/Object.freeze({
  __proto__: null,
  version: version,
  defineComponent: defineComponent,
  ref: ref$1,
  shallowRef: shallowRef,
  isRef: isRef,
  toRef: toRef,
  toRefs: toRefs,
  unref: unref,
  proxyRefs: proxyRefs,
  customRef: customRef,
  triggerRef: triggerRef,
  reactive: reactive,
  isReactive: isReactive,
  isReadonly: isReadonly,
  isShallow: isShallow,
  isProxy: isProxy,
  shallowReactive: shallowReactive,
  markRaw: markRaw,
  toRaw: toRaw,
  readonly: readonly,
  shallowReadonly: shallowReadonly,
  computed: computed,
  watch: watch,
  watchEffect: watchEffect,
  watchPostEffect: watchPostEffect,
  watchSyncEffect: watchSyncEffect,
  EffectScope: EffectScope,
  effectScope: effectScope,
  onScopeDispose: onScopeDispose,
  getCurrentScope: getCurrentScope,
  provide: provide,
  inject: inject,
  h: h,
  getCurrentInstance: getCurrentInstance,
  useSlots: useSlots,
  useAttrs: useAttrs,
  useListeners: useListeners,
  mergeDefaults: mergeDefaults,
  nextTick: nextTick,
  set: set,
  del: del,
  useCssModule: useCssModule,
  useCssVars: useCssVars,
  defineAsyncComponent: defineAsyncComponent,
  onBeforeMount: onBeforeMount,
  onMounted: onMounted,
  onBeforeUpdate: onBeforeUpdate,
  onUpdated: onUpdated,
  onBeforeUnmount: onBeforeUnmount,
  onUnmounted: onUnmounted,
  onActivated: onActivated,
  onDeactivated: onDeactivated,
  onServerPrefetch: onServerPrefetch,
  onRenderTracked: onRenderTracked,
  onRenderTriggered: onRenderTriggered,
  onErrorCaptured: onErrorCaptured
});

const seenObjects = new _Set();
/**
 * Recursively traverse an object to evoke all converted
 * getters, so that every nested property inside the object
 * is collected as a "deep" dependency.
 */
function traverse(val) {
    _traverse(val, seenObjects);
    seenObjects.clear();
    return val;
}
function _traverse(val, seen) {
    let i, keys;
    const isA = isArray(val);
    if ((!isA && !isObject(val)) ||
        val.__v_skip /* ReactiveFlags.SKIP */ ||
        Object.isFrozen(val) ||
        val instanceof VNode) {
        return;
    }
    if (val.__ob__) {
        const depId = val.__ob__.dep.id;
        if (seen.has(depId)) {
            return;
        }
        seen.add(depId);
    }
    if (isA) {
        i = val.length;
        while (i--)
            _traverse(val[i], seen);
    }
    else if (isRef(val)) {
        _traverse(val.value, seen);
    }
    else {
        keys = Object.keys(val);
        i = keys.length;
        while (i--)
            _traverse(val[keys[i]], seen);
    }
}

let uid$1 = 0;
/**
 * A watcher parses an expression, collects dependencies,
 * and fires callback when the expression value changes.
 * This is used for both the $watch() api and directives.
 * @internal
 */
class Watcher {
    constructor(vm, expOrFn, cb, options, isRenderWatcher) {
        recordEffectScope(this, 
        // if the active effect scope is manually created (not a component scope),
        // prioritize it
        activeEffectScope && !activeEffectScope._vm
            ? activeEffectScope
            : vm
                ? vm._scope
                : undefined);
        if ((this.vm = vm) && isRenderWatcher) {
            vm._watcher = this;
        }
        // options
        if (options) {
            this.deep = !!options.deep;
            this.user = !!options.user;
            this.lazy = !!options.lazy;
            this.sync = !!options.sync;
            this.before = options.before;
            {
                this.onTrack = options.onTrack;
                this.onTrigger = options.onTrigger;
            }
        }
        else {
            this.deep = this.user = this.lazy = this.sync = false;
        }
        this.cb = cb;
        this.id = ++uid$1; // uid for batching
        this.active = true;
        this.post = false;
        this.dirty = this.lazy; // for lazy watchers
        this.deps = [];
        this.newDeps = [];
        this.depIds = new _Set();
        this.newDepIds = new _Set();
        this.expression = expOrFn.toString() ;
        // parse expression for getter
        if (isFunction(expOrFn)) {
            this.getter = expOrFn;
        }
        else {
            this.getter = parsePath(expOrFn);
            if (!this.getter) {
                this.getter = noop;
                warn(`Failed watching path: "${expOrFn}" ` +
                        'Watcher only accepts simple dot-delimited paths. ' +
                        'For full control, use a function instead.', vm);
            }
        }
        this.value = this.lazy ? undefined : this.get();
    }
    /**
     * Evaluate the getter, and re-collect dependencies.
     */
    get() {
        pushTarget(this);
        let value;
        const vm = this.vm;
        try {
            value = this.getter.call(vm, vm);
        }
        catch (e) {
            if (this.user) {
                handleError(e, vm, `getter for watcher "${this.expression}"`);
            }
            else {
                throw e;
            }
        }
        finally {
            // "touch" every property so they are all tracked as
            // dependencies for deep watching
            if (this.deep) {
                traverse(value);
            }
            popTarget();
            this.cleanupDeps();
        }
        return value;
    }
    /**
     * Add a dependency to this directive.
     */
    addDep(dep) {
        const id = dep.id;
        if (!this.newDepIds.has(id)) {
            this.newDepIds.add(id);
            this.newDeps.push(dep);
            if (!this.depIds.has(id)) {
                dep.addSub(this);
            }
        }
    }
    /**
     * Clean up for dependency collection.
     */
    cleanupDeps() {
        let i = this.deps.length;
        while (i--) {
            const dep = this.deps[i];
            if (!this.newDepIds.has(dep.id)) {
                dep.removeSub(this);
            }
        }
        let tmp = this.depIds;
        this.depIds = this.newDepIds;
        this.newDepIds = tmp;
        this.newDepIds.clear();
        tmp = this.deps;
        this.deps = this.newDeps;
        this.newDeps = tmp;
        this.newDeps.length = 0;
    }
    /**
     * Subscriber interface.
     * Will be called when a dependency changes.
     */
    update() {
        /* istanbul ignore else */
        if (this.lazy) {
            this.dirty = true;
        }
        else if (this.sync) {
            this.run();
        }
        else {
            queueWatcher(this);
        }
    }
    /**
     * Scheduler job interface.
     * Will be called by the scheduler.
     */
    run() {
        if (this.active) {
            const value = this.get();
            if (value !== this.value ||
                // Deep watchers and watchers on Object/Arrays should fire even
                // when the value is the same, because the value may
                // have mutated.
                isObject(value) ||
                this.deep) {
                // set new value
                const oldValue = this.value;
                this.value = value;
                if (this.user) {
                    const info = `callback for watcher "${this.expression}"`;
                    invokeWithErrorHandling(this.cb, this.vm, [value, oldValue], this.vm, info);
                }
                else {
                    this.cb.call(this.vm, value, oldValue);
                }
            }
        }
    }
    /**
     * Evaluate the value of the watcher.
     * This only gets called for lazy watchers.
     */
    evaluate() {
        this.value = this.get();
        this.dirty = false;
    }
    /**
     * Depend on all deps collected by this watcher.
     */
    depend() {
        let i = this.deps.length;
        while (i--) {
            this.deps[i].depend();
        }
    }
    /**
     * Remove self from all dependencies' subscriber list.
     */
    teardown() {
        if (this.vm && !this.vm._isBeingDestroyed) {
            remove$2(this.vm._scope.effects, this);
        }
        if (this.active) {
            let i = this.deps.length;
            while (i--) {
                this.deps[i].removeSub(this);
            }
            this.active = false;
            if (this.onStop) {
                this.onStop();
            }
        }
    }
}

let mark;
let measure;
{
    const perf = inBrowser && window.performance;
    /* istanbul ignore if */
    if (perf &&
        // @ts-ignore
        perf.mark &&
        // @ts-ignore
        perf.measure &&
        // @ts-ignore
        perf.clearMarks &&
        // @ts-ignore
        perf.clearMeasures) {
        mark = tag => perf.mark(tag);
        measure = (name, startTag, endTag) => {
            perf.measure(name, startTag, endTag);
            perf.clearMarks(startTag);
            perf.clearMarks(endTag);
            // perf.clearMeasures(name)
        };
    }
}

function initEvents(vm) {
    vm._events = Object.create(null);
    vm._hasHookEvent = false;
    // init parent attached events
    const listeners = vm.$options._parentListeners;
    if (listeners) {
        updateComponentListeners(vm, listeners);
    }
}
let target$1;
function add$1(event, fn) {
    target$1.$on(event, fn);
}
function remove$1(event, fn) {
    target$1.$off(event, fn);
}
function createOnceHandler$1(event, fn) {
    const _target = target$1;
    return function onceHandler() {
        const res = fn.apply(null, arguments);
        if (res !== null) {
            _target.$off(event, onceHandler);
        }
    };
}
function updateComponentListeners(vm, listeners, oldListeners) {
    target$1 = vm;
    updateListeners(listeners, oldListeners || {}, add$1, remove$1, createOnceHandler$1, vm);
    target$1 = undefined;
}
function eventsMixin(Vue) {
    const hookRE = /^hook:/;
    Vue.prototype.$on = function (event, fn) {
        const vm = this;
        if (isArray(event)) {
            for (let i = 0, l = event.length; i < l; i++) {
                vm.$on(event[i], fn);
            }
        }
        else {
            (vm._events[event] || (vm._events[event] = [])).push(fn);
            // optimize hook:event cost by using a boolean flag marked at registration
            // instead of a hash lookup
            if (hookRE.test(event)) {
                vm._hasHookEvent = true;
            }
        }
        return vm;
    };
    Vue.prototype.$once = function (event, fn) {
        const vm = this;
        function on() {
            vm.$off(event, on);
            fn.apply(vm, arguments);
        }
        on.fn = fn;
        vm.$on(event, on);
        return vm;
    };
    Vue.prototype.$off = function (event, fn) {
        const vm = this;
        // all
        if (!arguments.length) {
            vm._events = Object.create(null);
            return vm;
        }
        // array of events
        if (isArray(event)) {
            for (let i = 0, l = event.length; i < l; i++) {
                vm.$off(event[i], fn);
            }
            return vm;
        }
        // specific event
        const cbs = vm._events[event];
        if (!cbs) {
            return vm;
        }
        if (!fn) {
            vm._events[event] = null;
            return vm;
        }
        // specific handler
        let cb;
        let i = cbs.length;
        while (i--) {
            cb = cbs[i];
            if (cb === fn || cb.fn === fn) {
                cbs.splice(i, 1);
                break;
            }
        }
        return vm;
    };
    Vue.prototype.$emit = function (event) {
        const vm = this;
        {
            const lowerCaseEvent = event.toLowerCase();
            if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
                tip(`Event "${lowerCaseEvent}" is emitted in component ` +
                    `${formatComponentName(vm)} but the handler is registered for "${event}". ` +
                    `Note that HTML attributes are case-insensitive and you cannot use ` +
                    `v-on to listen to camelCase events when using in-DOM templates. ` +
                    `You should probably use "${hyphenate(event)}" instead of "${event}".`);
            }
        }
        let cbs = vm._events[event];
        if (cbs) {
            cbs = cbs.length > 1 ? toArray(cbs) : cbs;
            const args = toArray(arguments, 1);
            const info = `event handler for "${event}"`;
            for (let i = 0, l = cbs.length; i < l; i++) {
                invokeWithErrorHandling(cbs[i], vm, args, vm, info);
            }
        }
        return vm;
    };
}

let activeInstance = null;
let isUpdatingChildComponent = false;
function setActiveInstance(vm) {
    const prevActiveInstance = activeInstance;
    activeInstance = vm;
    return () => {
        activeInstance = prevActiveInstance;
    };
}
function initLifecycle(vm) {
    const options = vm.$options;
    // locate first non-abstract parent
    let parent = options.parent;
    if (parent && !options.abstract) {
        while (parent.$options.abstract && parent.$parent) {
            parent = parent.$parent;
        }
        parent.$children.push(vm);
    }
    vm.$parent = parent;
    vm.$root = parent ? parent.$root : vm;
    vm.$children = [];
    vm.$refs = {};
    vm._provided = parent ? parent._provided : Object.create(null);
    vm._watcher = null;
    vm._inactive = null;
    vm._directInactive = false;
    vm._isMounted = false;
    vm._isDestroyed = false;
    vm._isBeingDestroyed = false;
}
function lifecycleMixin(Vue) {
    Vue.prototype._update = function (vnode, hydrating) {
        const vm = this;
        const prevEl = vm.$el;
        const prevVnode = vm._vnode;
        const restoreActiveInstance = setActiveInstance(vm);
        vm._vnode = vnode;
        // Vue.prototype.__patch__ is injected in entry points
        // based on the rendering backend used.
        if (!prevVnode) {
            // initial render
            vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
        }
        else {
            // updates
            vm.$el = vm.__patch__(prevVnode, vnode);
        }
        restoreActiveInstance();
        // update __vue__ reference
        if (prevEl) {
            prevEl.__vue__ = null;
        }
        if (vm.$el) {
            vm.$el.__vue__ = vm;
        }
        // if parent is an HOC, update its $el as well
        let wrapper = vm;
        while (wrapper &&
            wrapper.$vnode &&
            wrapper.$parent &&
            wrapper.$vnode === wrapper.$parent._vnode) {
            wrapper.$parent.$el = wrapper.$el;
            wrapper = wrapper.$parent;
        }
        // updated hook is called by the scheduler to ensure that children are
        // updated in a parent's updated hook.
    };
    Vue.prototype.$forceUpdate = function () {
        const vm = this;
        if (vm._watcher) {
            vm._watcher.update();
        }
    };
    Vue.prototype.$destroy = function () {
        const vm = this;
        if (vm._isBeingDestroyed) {
            return;
        }
        callHook$1(vm, 'beforeDestroy');
        vm._isBeingDestroyed = true;
        // remove self from parent
        const parent = vm.$parent;
        if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
            remove$2(parent.$children, vm);
        }
        // teardown scope. this includes both the render watcher and other
        // watchers created
        vm._scope.stop();
        // remove reference from data ob
        // frozen object may not have observer.
        if (vm._data.__ob__) {
            vm._data.__ob__.vmCount--;
        }
        // call the last hook...
        vm._isDestroyed = true;
        // invoke destroy hooks on current rendered tree
        vm.__patch__(vm._vnode, null);
        // fire destroyed hook
        callHook$1(vm, 'destroyed');
        // turn off all instance listeners.
        vm.$off();
        // remove __vue__ reference
        if (vm.$el) {
            vm.$el.__vue__ = null;
        }
        // release circular reference (#6759)
        if (vm.$vnode) {
            vm.$vnode.parent = null;
        }
    };
}
function mountComponent(vm, el, hydrating) {
    vm.$el = el;
    if (!vm.$options.render) {
        // @ts-expect-error invalid type
        vm.$options.render = createEmptyVNode;
        {
            /* istanbul ignore if */
            if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
                vm.$options.el ||
                el) {
                warn('You are using the runtime-only build of Vue where the template ' +
                    'compiler is not available. Either pre-compile the templates into ' +
                    'render functions, or use the compiler-included build.', vm);
            }
            else {
                warn('Failed to mount component: template or render function not defined.', vm);
            }
        }
    }
    callHook$1(vm, 'beforeMount');
    let updateComponent;
    /* istanbul ignore if */
    if (config.performance && mark) {
        updateComponent = () => {
            const name = vm._name;
            const id = vm._uid;
            const startTag = `vue-perf-start:${id}`;
            const endTag = `vue-perf-end:${id}`;
            mark(startTag);
            const vnode = vm._render();
            mark(endTag);
            measure(`vue ${name} render`, startTag, endTag);
            mark(startTag);
            vm._update(vnode, hydrating);
            mark(endTag);
            measure(`vue ${name} patch`, startTag, endTag);
        };
    }
    else {
        updateComponent = () => {
            vm._update(vm._render(), hydrating);
        };
    }
    const watcherOptions = {
        before() {
            if (vm._isMounted && !vm._isDestroyed) {
                callHook$1(vm, 'beforeUpdate');
            }
        }
    };
    {
        watcherOptions.onTrack = e => callHook$1(vm, 'renderTracked', [e]);
        watcherOptions.onTrigger = e => callHook$1(vm, 'renderTriggered', [e]);
    }
    // we set this to vm._watcher inside the watcher's constructor
    // since the watcher's initial patch may call $forceUpdate (e.g. inside child
    // component's mounted hook), which relies on vm._watcher being already defined
    new Watcher(vm, updateComponent, noop, watcherOptions, true /* isRenderWatcher */);
    hydrating = false;
    // flush buffer for flush: "pre" watchers queued in setup()
    const preWatchers = vm._preWatchers;
    if (preWatchers) {
        for (let i = 0; i < preWatchers.length; i++) {
            preWatchers[i].run();
        }
    }
    // manually mounted instance, call mounted on self
    // mounted is called for render-created child components in its inserted hook
    if (vm.$vnode == null) {
        vm._isMounted = true;
        callHook$1(vm, 'mounted');
    }
    return vm;
}
function updateChildComponent(vm, propsData, listeners, parentVnode, renderChildren) {
    {
        isUpdatingChildComponent = true;
    }
    // determine whether component has slot children
    // we need to do this before overwriting $options._renderChildren.
    // check if there are dynamic scopedSlots (hand-written or compiled but with
    // dynamic slot names). Static scoped slots compiled from template has the
    // "$stable" marker.
    const newScopedSlots = parentVnode.data.scopedSlots;
    const oldScopedSlots = vm.$scopedSlots;
    const hasDynamicScopedSlot = !!((newScopedSlots && !newScopedSlots.$stable) ||
        (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
        (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key) ||
        (!newScopedSlots && vm.$scopedSlots.$key));
    // Any static slot children from the parent may have changed during parent's
    // update. Dynamic scoped slots may also have changed. In such cases, a forced
    // update is necessary to ensure correctness.
    let needsForceUpdate = !!(renderChildren || // has new static slots
        vm.$options._renderChildren || // has old static slots
        hasDynamicScopedSlot);
    const prevVNode = vm.$vnode;
    vm.$options._parentVnode = parentVnode;
    vm.$vnode = parentVnode; // update vm's placeholder node without re-render
    if (vm._vnode) {
        // update child tree's parent
        vm._vnode.parent = parentVnode;
    }
    vm.$options._renderChildren = renderChildren;
    // update $attrs and $listeners hash
    // these are also reactive so they may trigger child update if the child
    // used them during render
    const attrs = parentVnode.data.attrs || emptyObject;
    if (vm._attrsProxy) {
        // force update if attrs are accessed and has changed since it may be
        // passed to a child component.
        if (syncSetupProxy(vm._attrsProxy, attrs, (prevVNode.data && prevVNode.data.attrs) || emptyObject, vm, '$attrs')) {
            needsForceUpdate = true;
        }
    }
    vm.$attrs = attrs;
    // update listeners
    listeners = listeners || emptyObject;
    const prevListeners = vm.$options._parentListeners;
    if (vm._listenersProxy) {
        syncSetupProxy(vm._listenersProxy, listeners, prevListeners || emptyObject, vm, '$listeners');
    }
    vm.$listeners = vm.$options._parentListeners = listeners;
    updateComponentListeners(vm, listeners, prevListeners);
    // update props
    if (propsData && vm.$options.props) {
        toggleObserving(false);
        const props = vm._props;
        const propKeys = vm.$options._propKeys || [];
        for (let i = 0; i < propKeys.length; i++) {
            const key = propKeys[i];
            const propOptions = vm.$options.props; // wtf flow?
            props[key] = validateProp(key, propOptions, propsData, vm);
        }
        toggleObserving(true);
        // keep a copy of raw propsData
        vm.$options.propsData = propsData;
    }
    // resolve slots + force update if has children
    if (needsForceUpdate) {
        vm.$slots = resolveSlots(renderChildren, parentVnode.context);
        vm.$forceUpdate();
    }
    {
        isUpdatingChildComponent = false;
    }
}
function isInInactiveTree(vm) {
    while (vm && (vm = vm.$parent)) {
        if (vm._inactive)
            return true;
    }
    return false;
}
function activateChildComponent(vm, direct) {
    if (direct) {
        vm._directInactive = false;
        if (isInInactiveTree(vm)) {
            return;
        }
    }
    else if (vm._directInactive) {
        return;
    }
    if (vm._inactive || vm._inactive === null) {
        vm._inactive = false;
        for (let i = 0; i < vm.$children.length; i++) {
            activateChildComponent(vm.$children[i]);
        }
        callHook$1(vm, 'activated');
    }
}
function deactivateChildComponent(vm, direct) {
    if (direct) {
        vm._directInactive = true;
        if (isInInactiveTree(vm)) {
            return;
        }
    }
    if (!vm._inactive) {
        vm._inactive = true;
        for (let i = 0; i < vm.$children.length; i++) {
            deactivateChildComponent(vm.$children[i]);
        }
        callHook$1(vm, 'deactivated');
    }
}
function callHook$1(vm, hook, args, setContext = true) {
    // #7573 disable dep collection when invoking lifecycle hooks
    pushTarget();
    const prev = currentInstance;
    setContext && setCurrentInstance(vm);
    const handlers = vm.$options[hook];
    const info = `${hook} hook`;
    if (handlers) {
        for (let i = 0, j = handlers.length; i < j; i++) {
            invokeWithErrorHandling(handlers[i], vm, args || null, vm, info);
        }
    }
    if (vm._hasHookEvent) {
        vm.$emit('hook:' + hook);
    }
    setContext && setCurrentInstance(prev);
    popTarget();
}

const MAX_UPDATE_COUNT = 100;
const queue = [];
const activatedChildren = [];
let has = {};
let circular = {};
let waiting = false;
let flushing = false;
let index = 0;
/**
 * Reset the scheduler's state.
 */
function resetSchedulerState() {
    index = queue.length = activatedChildren.length = 0;
    has = {};
    {
        circular = {};
    }
    waiting = flushing = false;
}
// Async edge case #6566 requires saving the timestamp when event listeners are
// attached. However, calling performance.now() has a perf overhead especially
// if the page has thousands of event listeners. Instead, we take a timestamp
// every time the scheduler flushes and use that for all event listeners
// attached during that flush.
let currentFlushTimestamp = 0;
// Async edge case fix requires storing an event listener's attach timestamp.
let getNow = Date.now;
// Determine what event timestamp the browser is using. Annoyingly, the
// timestamp can either be hi-res (relative to page load) or low-res
// (relative to UNIX epoch), so in order to compare time we have to use the
// same timestamp type when saving the flush timestamp.
// All IE versions use low-res event timestamps, and have problematic clock
// implementations (#9632)
if (inBrowser && !isIE) {
    const performance = window.performance;
    if (performance &&
        typeof performance.now === 'function' &&
        getNow() > document.createEvent('Event').timeStamp) {
        // if the event timestamp, although evaluated AFTER the Date.now(), is
        // smaller than it, it means the event is using a hi-res timestamp,
        // and we need to use the hi-res version for event listener timestamps as
        // well.
        getNow = () => performance.now();
    }
}
const sortCompareFn = (a, b) => {
    if (a.post) {
        if (!b.post)
            return 1;
    }
    else if (b.post) {
        return -1;
    }
    return a.id - b.id;
};
/**
 * Flush both queues and run the watchers.
 */
function flushSchedulerQueue() {
    currentFlushTimestamp = getNow();
    flushing = true;
    let watcher, id;
    // Sort queue before flush.
    // This ensures that:
    // 1. Components are updated from parent to child. (because parent is always
    //    created before the child)
    // 2. A component's user watchers are run before its render watcher (because
    //    user watchers are created before the render watcher)
    // 3. If a component is destroyed during a parent component's watcher run,
    //    its watchers can be skipped.
    queue.sort(sortCompareFn);
    // do not cache length because more watchers might be pushed
    // as we run existing watchers
    for (index = 0; index < queue.length; index++) {
        watcher = queue[index];
        if (watcher.before) {
            watcher.before();
        }
        id = watcher.id;
        has[id] = null;
        watcher.run();
        // in dev build, check and stop circular updates.
        if (has[id] != null) {
            circular[id] = (circular[id] || 0) + 1;
            if (circular[id] > MAX_UPDATE_COUNT) {
                warn('You may have an infinite update loop ' +
                    (watcher.user
                        ? `in watcher with expression "${watcher.expression}"`
                        : `in a component render function.`), watcher.vm);
                break;
            }
        }
    }
    // keep copies of post queues before resetting state
    const activatedQueue = activatedChildren.slice();
    const updatedQueue = queue.slice();
    resetSchedulerState();
    // call component updated and activated hooks
    callActivatedHooks(activatedQueue);
    callUpdatedHooks(updatedQueue);
    cleanupDeps();
    // devtool hook
    /* istanbul ignore if */
    if (devtools && config.devtools) {
        devtools.emit('flush');
    }
}
function callUpdatedHooks(queue) {
    let i = queue.length;
    while (i--) {
        const watcher = queue[i];
        const vm = watcher.vm;
        if (vm && vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
            callHook$1(vm, 'updated');
        }
    }
}
/**
 * Queue a kept-alive component that was activated during patch.
 * The queue will be processed after the entire tree has been patched.
 */
function queueActivatedComponent(vm) {
    // setting _inactive to false here so that a render function can
    // rely on checking whether it's in an inactive tree (e.g. router-view)
    vm._inactive = false;
    activatedChildren.push(vm);
}
function callActivatedHooks(queue) {
    for (let i = 0; i < queue.length; i++) {
        queue[i]._inactive = true;
        activateChildComponent(queue[i], true /* true */);
    }
}
/**
 * Push a watcher into the watcher queue.
 * Jobs with duplicate IDs will be skipped unless it's
 * pushed when the queue is being flushed.
 */
function queueWatcher(watcher) {
    const id = watcher.id;
    if (has[id] != null) {
        return;
    }
    if (watcher === Dep.target && watcher.noRecurse) {
        return;
    }
    has[id] = true;
    if (!flushing) {
        queue.push(watcher);
    }
    else {
        // if already flushing, splice the watcher based on its id
        // if already past its id, it will be run next immediately.
        let i = queue.length - 1;
        while (i > index && queue[i].id > watcher.id) {
            i--;
        }
        queue.splice(i + 1, 0, watcher);
    }
    // queue the flush
    if (!waiting) {
        waiting = true;
        if (!config.async) {
            flushSchedulerQueue();
            return;
        }
        nextTick(flushSchedulerQueue);
    }
}

function initProvide(vm) {
    const provideOption = vm.$options.provide;
    if (provideOption) {
        const provided = isFunction(provideOption)
            ? provideOption.call(vm)
            : provideOption;
        if (!isObject(provided)) {
            return;
        }
        const source = resolveProvided(vm);
        // IE9 doesn't support Object.getOwnPropertyDescriptors so we have to
        // iterate the keys ourselves.
        const keys = hasSymbol ? Reflect.ownKeys(provided) : Object.keys(provided);
        for (let i = 0; i < keys.length; i++) {
            const key = keys[i];
            Object.defineProperty(source, key, Object.getOwnPropertyDescriptor(provided, key));
        }
    }
}
function initInjections(vm) {
    const result = resolveInject(vm.$options.inject, vm);
    if (result) {
        toggleObserving(false);
        Object.keys(result).forEach(key => {
            /* istanbul ignore else */
            {
                defineReactive(vm, key, result[key], () => {
                    warn(`Avoid mutating an injected value directly since the changes will be ` +
                        `overwritten whenever the provided component re-renders. ` +
                        `injection being mutated: "${key}"`, vm);
                });
            }
        });
        toggleObserving(true);
    }
}
function resolveInject(inject, vm) {
    if (inject) {
        // inject is :any because flow is not smart enough to figure out cached
        const result = Object.create(null);
        const keys = hasSymbol ? Reflect.ownKeys(inject) : Object.keys(inject);
        for (let i = 0; i < keys.length; i++) {
            const key = keys[i];
            // #6574 in case the inject object is observed...
            if (key === '__ob__')
                continue;
            const provideKey = inject[key].from;
            if (provideKey in vm._provided) {
                result[key] = vm._provided[provideKey];
            }
            else if ('default' in inject[key]) {
                const provideDefault = inject[key].default;
                result[key] = isFunction(provideDefault)
                    ? provideDefault.call(vm)
                    : provideDefault;
            }
            else {
                warn(`Injection "${key}" not found`, vm);
            }
        }
        return result;
    }
}

function FunctionalRenderContext(data, props, children, parent, Ctor) {
    const options = Ctor.options;
    // ensure the createElement function in functional components
    // gets a unique context - this is necessary for correct named slot check
    let contextVm;
    if (hasOwn(parent, '_uid')) {
        contextVm = Object.create(parent);
        contextVm._original = parent;
    }
    else {
        // the context vm passed in is a functional context as well.
        // in this case we want to make sure we are able to get a hold to the
        // real context instance.
        contextVm = parent;
        // @ts-ignore
        parent = parent._original;
    }
    const isCompiled = isTrue(options._compiled);
    const needNormalization = !isCompiled;
    this.data = data;
    this.props = props;
    this.children = children;
    this.parent = parent;
    this.listeners = data.on || emptyObject;
    this.injections = resolveInject(options.inject, parent);
    this.slots = () => {
        if (!this.$slots) {
            normalizeScopedSlots(parent, data.scopedSlots, (this.$slots = resolveSlots(children, parent)));
        }
        return this.$slots;
    };
    Object.defineProperty(this, 'scopedSlots', {
        enumerable: true,
        get() {
            return normalizeScopedSlots(parent, data.scopedSlots, this.slots());
        }
    });
    // support for compiled functional template
    if (isCompiled) {
        // exposing $options for renderStatic()
        this.$options = options;
        // pre-resolve slots for renderSlot()
        this.$slots = this.slots();
        this.$scopedSlots = normalizeScopedSlots(parent, data.scopedSlots, this.$slots);
    }
    if (options._scopeId) {
        this._c = (a, b, c, d) => {
            const vnode = createElement$1(contextVm, a, b, c, d, needNormalization);
            if (vnode && !isArray(vnode)) {
                vnode.fnScopeId = options._scopeId;
                vnode.fnContext = parent;
            }
            return vnode;
        };
    }
    else {
        this._c = (a, b, c, d) => createElement$1(contextVm, a, b, c, d, needNormalization);
    }
}
installRenderHelpers(FunctionalRenderContext.prototype);
function createFunctionalComponent(Ctor, propsData, data, contextVm, children) {
    const options = Ctor.options;
    const props = {};
    const propOptions = options.props;
    if (isDef(propOptions)) {
        for (const key in propOptions) {
            props[key] = validateProp(key, propOptions, propsData || emptyObject);
        }
    }
    else {
        if (isDef(data.attrs))
            mergeProps(props, data.attrs);
        if (isDef(data.props))
            mergeProps(props, data.props);
    }
    const renderContext = new FunctionalRenderContext(data, props, children, contextVm, Ctor);
    const vnode = options.render.call(null, renderContext._c, renderContext);
    if (vnode instanceof VNode) {
        return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext);
    }
    else if (isArray(vnode)) {
        const vnodes = normalizeChildren(vnode) || [];
        const res = new Array(vnodes.length);
        for (let i = 0; i < vnodes.length; i++) {
            res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
        }
        return res;
    }
}
function cloneAndMarkFunctionalResult(vnode, data, contextVm, options, renderContext) {
    // #7817 clone node before setting fnContext, otherwise if the node is reused
    // (e.g. it was from a cached normal slot) the fnContext causes named slots
    // that should not be matched to match.
    const clone = cloneVNode(vnode);
    clone.fnContext = contextVm;
    clone.fnOptions = options;
    {
        (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext =
            renderContext;
    }
    if (data.slot) {
        (clone.data || (clone.data = {})).slot = data.slot;
    }
    return clone;
}
function mergeProps(to, from) {
    for (const key in from) {
        to[camelize(key)] = from[key];
    }
}

function getComponentName(options) {
    return options.name || options.__name || options._componentTag;
}
// inline hooks to be invoked on component VNodes during patch
const componentVNodeHooks = {
    init(vnode, hydrating) {
        if (vnode.componentInstance &&
            !vnode.componentInstance._isDestroyed &&
            vnode.data.keepAlive) {
            // kept-alive components, treat as a patch
            const mountedNode = vnode; // work around flow
            componentVNodeHooks.prepatch(mountedNode, mountedNode);
        }
        else {
            const child = (vnode.componentInstance = createComponentInstanceForVnode(vnode, activeInstance));
            child.$mount(hydrating ? vnode.elm : undefined, hydrating);
        }
    },
    prepatch(oldVnode, vnode) {
        const options = vnode.componentOptions;
        const child = (vnode.componentInstance = oldVnode.componentInstance);
        updateChildComponent(child, options.propsData, // updated props
        options.listeners, // updated listeners
        vnode, // new parent vnode
        options.children // new children
        );
    },
    insert(vnode) {
        const { context, componentInstance } = vnode;
        if (!componentInstance._isMounted) {
            componentInstance._isMounted = true;
            callHook$1(componentInstance, 'mounted');
        }
        if (vnode.data.keepAlive) {
            if (context._isMounted) {
                // vue-router#1212
                // During updates, a kept-alive component's child components may
                // change, so directly walking the tree here may call activated hooks
                // on incorrect children. Instead we push them into a queue which will
                // be processed after the whole patch process ended.
                queueActivatedComponent(componentInstance);
            }
            else {
                activateChildComponent(componentInstance, true /* direct */);
            }
        }
    },
    destroy(vnode) {
        const { componentInstance } = vnode;
        if (!componentInstance._isDestroyed) {
            if (!vnode.data.keepAlive) {
                componentInstance.$destroy();
            }
            else {
                deactivateChildComponent(componentInstance, true /* direct */);
            }
        }
    }
};
const hooksToMerge = Object.keys(componentVNodeHooks);
function createComponent(Ctor, data, context, children, tag) {
    if (isUndef(Ctor)) {
        return;
    }
    const baseCtor = context.$options._base;
    // plain options object: turn it into a constructor
    if (isObject(Ctor)) {
        Ctor = baseCtor.extend(Ctor);
    }
    // if at this stage it's not a constructor or an async component factory,
    // reject.
    if (typeof Ctor !== 'function') {
        {
            warn(`Invalid Component definition: ${String(Ctor)}`, context);
        }
        return;
    }
    // async component
    let asyncFactory;
    // @ts-expect-error
    if (isUndef(Ctor.cid)) {
        asyncFactory = Ctor;
        Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
        if (Ctor === undefined) {
            // return a placeholder node for async component, which is rendered
            // as a comment node but preserves all the raw information for the node.
            // the information will be used for async server-rendering and hydration.
            return createAsyncPlaceholder(asyncFactory, data, context, children, tag);
        }
    }
    data = data || {};
    // resolve constructor options in case global mixins are applied after
    // component constructor creation
    resolveConstructorOptions(Ctor);
    // transform component v-model data into props & events
    if (isDef(data.model)) {
        // @ts-expect-error
        transformModel(Ctor.options, data);
    }
    // extract props
    // @ts-expect-error
    const propsData = extractPropsFromVNodeData(data, Ctor, tag);
    // functional component
    // @ts-expect-error
    if (isTrue(Ctor.options.functional)) {
        return createFunctionalComponent(Ctor, propsData, data, context, children);
    }
    // extract listeners, since these needs to be treated as
    // child component listeners instead of DOM listeners
    const listeners = data.on;
    // replace with listeners with .native modifier
    // so it gets processed during parent component patch.
    data.on = data.nativeOn;
    // @ts-expect-error
    if (isTrue(Ctor.options.abstract)) {
        // abstract components do not keep anything
        // other than props & listeners & slot
        // work around flow
        const slot = data.slot;
        data = {};
        if (slot) {
            data.slot = slot;
        }
    }
    // install component management hooks onto the placeholder node
    installComponentHooks(data);
    // return a placeholder vnode
    // @ts-expect-error
    const name = getComponentName(Ctor.options) || tag;
    const vnode = new VNode(
    // @ts-expect-error
    `vue-component-${Ctor.cid}${name ? `-${name}` : ''}`, data, undefined, undefined, undefined, context, 
    // @ts-expect-error
    { Ctor, propsData, listeners, tag, children }, asyncFactory);
    return vnode;
}
function createComponentInstanceForVnode(
// we know it's MountedComponentVNode but flow doesn't
vnode, 
// activeInstance in lifecycle state
parent) {
    const options = {
        _isComponent: true,
        _parentVnode: vnode,
        parent
    };
    // check inline-template render functions
    const inlineTemplate = vnode.data.inlineTemplate;
    if (isDef(inlineTemplate)) {
        options.render = inlineTemplate.render;
        options.staticRenderFns = inlineTemplate.staticRenderFns;
    }
    return new vnode.componentOptions.Ctor(options);
}
function installComponentHooks(data) {
    const hooks = data.hook || (data.hook = {});
    for (let i = 0; i < hooksToMerge.length; i++) {
        const key = hooksToMerge[i];
        const existing = hooks[key];
        const toMerge = componentVNodeHooks[key];
        // @ts-expect-error
        if (existing !== toMerge && !(existing && existing._merged)) {
            hooks[key] = existing ? mergeHook(toMerge, existing) : toMerge;
        }
    }
}
function mergeHook(f1, f2) {
    const merged = (a, b) => {
        // flow complains about extra args which is why we use any
        f1(a, b);
        f2(a, b);
    };
    merged._merged = true;
    return merged;
}
// transform component v-model info (value and callback) into
// prop and event handler respectively.
function transformModel(options, data) {
    const prop = (options.model && options.model.prop) || 'value';
    const event = (options.model && options.model.event) || 'input';
    (data.attrs || (data.attrs = {}))[prop] = data.model.value;
    const on = data.on || (data.on = {});
    const existing = on[event];
    const callback = data.model.callback;
    if (isDef(existing)) {
        if (isArray(existing)
            ? existing.indexOf(callback) === -1
            : existing !== callback) {
            on[event] = [callback].concat(existing);
        }
    }
    else {
        on[event] = callback;
    }
}

let warn = noop;
let tip = noop;
let generateComponentTrace; // work around flow check
let formatComponentName;
{
    const hasConsole = typeof console !== 'undefined';
    const classifyRE = /(?:^|[-_])(\w)/g;
    const classify = str => str.replace(classifyRE, c => c.toUpperCase()).replace(/[-_]/g, '');
    warn = (msg, vm = currentInstance) => {
        const trace = vm ? generateComponentTrace(vm) : '';
        if (config.warnHandler) {
            config.warnHandler.call(null, msg, vm, trace);
        }
        else if (hasConsole && !config.silent) {
            console.error(`[Vue warn]: ${msg}${trace}`);
        }
    };
    tip = (msg, vm) => {
        if (hasConsole && !config.silent) {
            console.warn(`[Vue tip]: ${msg}` + (vm ? generateComponentTrace(vm) : ''));
        }
    };
    formatComponentName = (vm, includeFile) => {
        if (vm.$root === vm) {
            return '<Root>';
        }
        const options = isFunction(vm) && vm.cid != null
            ? vm.options
            : vm._isVue
                ? vm.$options || vm.constructor.options
                : vm;
        let name = getComponentName(options);
        const file = options.__file;
        if (!name && file) {
            const match = file.match(/([^/\\]+)\.vue$/);
            name = match && match[1];
        }
        return ((name ? `<${classify(name)}>` : `<Anonymous>`) +
            (file && includeFile !== false ? ` at ${file}` : ''));
    };
    const repeat = (str, n) => {
        let res = '';
        while (n) {
            if (n % 2 === 1)
                res += str;
            if (n > 1)
                str += str;
            n >>= 1;
        }
        return res;
    };
    generateComponentTrace = (vm) => {
        if (vm._isVue && vm.$parent) {
            const tree = [];
            let currentRecursiveSequence = 0;
            while (vm) {
                if (tree.length > 0) {
                    const last = tree[tree.length - 1];
                    if (last.constructor === vm.constructor) {
                        currentRecursiveSequence++;
                        vm = vm.$parent;
                        continue;
                    }
                    else if (currentRecursiveSequence > 0) {
                        tree[tree.length - 1] = [last, currentRecursiveSequence];
                        currentRecursiveSequence = 0;
                    }
                }
                tree.push(vm);
                vm = vm.$parent;
            }
            return ('\n\nfound in\n\n' +
                tree
                    .map((vm, i) => `${i === 0 ? '---> ' : repeat(' ', 5 + i * 2)}${isArray(vm)
                    ? `${formatComponentName(vm[0])}... (${vm[1]} recursive calls)`
                    : formatComponentName(vm)}`)
                    .join('\n'));
        }
        else {
            return `\n\n(found in ${formatComponentName(vm)})`;
        }
    };
}

/**
 * Option overwriting strategies are functions that handle
 * how to merge a parent option value and a child option
 * value into the final value.
 */
const strats = config.optionMergeStrategies;
/**
 * Options with restrictions
 */
{
    strats.el = strats.propsData = function (parent, child, vm, key) {
        if (!vm) {
            warn(`option "${key}" can only be used during instance ` +
                'creation with the `new` keyword.');
        }
        return defaultStrat(parent, child);
    };
}
/**
 * Helper that recursively merges two data objects together.
 */
function mergeData(to, from) {
    if (!from)
        return to;
    let key, toVal, fromVal;
    const keys = hasSymbol
        ? Reflect.ownKeys(from)
        : Object.keys(from);
    for (let i = 0; i < keys.length; i++) {
        key = keys[i];
        // in case the object is already observed...
        if (key === '__ob__')
            continue;
        toVal = to[key];
        fromVal = from[key];
        if (!hasOwn(to, key)) {
            set(to, key, fromVal);
        }
        else if (toVal !== fromVal &&
            isPlainObject(toVal) &&
            isPlainObject(fromVal)) {
            mergeData(toVal, fromVal);
        }
    }
    return to;
}
/**
 * Data
 */
function mergeDataOrFn(parentVal, childVal, vm) {
    if (!vm) {
        // in a Vue.extend merge, both should be functions
        if (!childVal) {
            return parentVal;
        }
        if (!parentVal) {
            return childVal;
        }
        // when parentVal & childVal are both present,
        // we need to return a function that returns the
        // merged result of both functions... no need to
        // check if parentVal is a function here because
        // it has to be a function to pass previous merges.
        return function mergedDataFn() {
            return mergeData(isFunction(childVal) ? childVal.call(this, this) : childVal, isFunction(parentVal) ? parentVal.call(this, this) : parentVal);
        };
    }
    else {
        return function mergedInstanceDataFn() {
            // instance merge
            const instanceData = isFunction(childVal)
                ? childVal.call(vm, vm)
                : childVal;
            const defaultData = isFunction(parentVal)
                ? parentVal.call(vm, vm)
                : parentVal;
            if (instanceData) {
                return mergeData(instanceData, defaultData);
            }
            else {
                return defaultData;
            }
        };
    }
}
strats.data = function (parentVal, childVal, vm) {
    if (!vm) {
        if (childVal && typeof childVal !== 'function') {
            warn('The "data" option should be a function ' +
                    'that returns a per-instance value in component ' +
                    'definitions.', vm);
            return parentVal;
        }
        return mergeDataOrFn(parentVal, childVal);
    }
    return mergeDataOrFn(parentVal, childVal, vm);
};
/**
 * Hooks and props are merged as arrays.
 */
function mergeLifecycleHook(parentVal, childVal) {
    const res = childVal
        ? parentVal
            ? parentVal.concat(childVal)
            : isArray(childVal)
                ? childVal
                : [childVal]
        : parentVal;
    return res ? dedupeHooks(res) : res;
}
function dedupeHooks(hooks) {
    const res = [];
    for (let i = 0; i < hooks.length; i++) {
        if (res.indexOf(hooks[i]) === -1) {
            res.push(hooks[i]);
        }
    }
    return res;
}
LIFECYCLE_HOOKS.forEach(hook => {
    strats[hook] = mergeLifecycleHook;
});
/**
 * Assets
 *
 * When a vm is present (instance creation), we need to do
 * a three-way merge between constructor options, instance
 * options and parent options.
 */
function mergeAssets(parentVal, childVal, vm, key) {
    const res = Object.create(parentVal || null);
    if (childVal) {
        assertObjectType(key, childVal, vm);
        return extend(res, childVal);
    }
    else {
        return res;
    }
}
ASSET_TYPES.forEach(function (type) {
    strats[type + 's'] = mergeAssets;
});
/**
 * Watchers.
 *
 * Watchers hashes should not overwrite one
 * another, so we merge them as arrays.
 */
strats.watch = function (parentVal, childVal, vm, key) {
    // work around Firefox's Object.prototype.watch...
    //@ts-expect-error work around
    if (parentVal === nativeWatch)
        parentVal = undefined;
    //@ts-expect-error work around
    if (childVal === nativeWatch)
        childVal = undefined;
    /* istanbul ignore if */
    if (!childVal)
        return Object.create(parentVal || null);
    {
        assertObjectType(key, childVal, vm);
    }
    if (!parentVal)
        return childVal;
    const ret = {};
    extend(ret, parentVal);
    for (const key in childVal) {
        let parent = ret[key];
        const child = childVal[key];
        if (parent && !isArray(parent)) {
            parent = [parent];
        }
        ret[key] = parent ? parent.concat(child) : isArray(child) ? child : [child];
    }
    return ret;
};
/**
 * Other object hashes.
 */
strats.props =
    strats.methods =
        strats.inject =
            strats.computed =
                function (parentVal, childVal, vm, key) {
                    if (childVal && true) {
                        assertObjectType(key, childVal, vm);
                    }
                    if (!parentVal)
                        return childVal;
                    const ret = Object.create(null);
                    extend(ret, parentVal);
                    if (childVal)
                        extend(ret, childVal);
                    return ret;
                };
strats.provide = mergeDataOrFn;
/**
 * Default strategy.
 */
const defaultStrat = function (parentVal, childVal) {
    return childVal === undefined ? parentVal : childVal;
};
/**
 * Validate component names
 */
function checkComponents(options) {
    for (const key in options.components) {
        validateComponentName(key);
    }
}
function validateComponentName(name) {
    if (!new RegExp(`^[a-zA-Z][\\-\\.0-9_${unicodeRegExp.source}]*$`).test(name)) {
        warn('Invalid component name: "' +
            name +
            '". Component names ' +
            'should conform to valid custom element name in html5 specification.');
    }
    if (isBuiltInTag(name) || config.isReservedTag(name)) {
        warn('Do not use built-in or reserved HTML elements as component ' +
            'id: ' +
            name);
    }
}
/**
 * Ensure all props option syntax are normalized into the
 * Object-based format.
 */
function normalizeProps(options, vm) {
    const props = options.props;
    if (!props)
        return;
    const res = {};
    let i, val, name;
    if (isArray(props)) {
        i = props.length;
        while (i--) {
            val = props[i];
            if (typeof val === 'string') {
                name = camelize(val);
                res[name] = { type: null };
            }
            else {
                warn('props must be strings when using array syntax.');
            }
        }
    }
    else if (isPlainObject(props)) {
        for (const key in props) {
            val = props[key];
            name = camelize(key);
            res[name] = isPlainObject(val) ? val : { type: val };
        }
    }
    else {
        warn(`Invalid value for option "props": expected an Array or an Object, ` +
            `but got ${toRawType(props)}.`, vm);
    }
    options.props = res;
}
/**
 * Normalize all injections into Object-based format
 */
function normalizeInject(options, vm) {
    const inject = options.inject;
    if (!inject)
        return;
    const normalized = (options.inject = {});
    if (isArray(inject)) {
        for (let i = 0; i < inject.length; i++) {
            normalized[inject[i]] = { from: inject[i] };
        }
    }
    else if (isPlainObject(inject)) {
        for (const key in inject) {
            const val = inject[key];
            normalized[key] = isPlainObject(val)
                ? extend({ from: key }, val)
                : { from: val };
        }
    }
    else {
        warn(`Invalid value for option "inject": expected an Array or an Object, ` +
            `but got ${toRawType(inject)}.`, vm);
    }
}
/**
 * Normalize raw function directives into object format.
 */
function normalizeDirectives$1(options) {
    const dirs = options.directives;
    if (dirs) {
        for (const key in dirs) {
            const def = dirs[key];
            if (isFunction(def)) {
                dirs[key] = { bind: def, update: def };
            }
        }
    }
}
function assertObjectType(name, value, vm) {
    if (!isPlainObject(value)) {
        warn(`Invalid value for option "${name}": expected an Object, ` +
            `but got ${toRawType(value)}.`, vm);
    }
}
/**
 * Merge two option objects into a new one.
 * Core utility used in both instantiation and inheritance.
 */
function mergeOptions(parent, child, vm) {
    {
        checkComponents(child);
    }
    if (isFunction(child)) {
        // @ts-expect-error
        child = child.options;
    }
    normalizeProps(child, vm);
    normalizeInject(child, vm);
    normalizeDirectives$1(child);
    // Apply extends and mixins on the child options,
    // but only if it is a raw options object that isn't
    // the result of another mergeOptions call.
    // Only merged options has the _base property.
    if (!child._base) {
        if (child.extends) {
            parent = mergeOptions(parent, child.extends, vm);
        }
        if (child.mixins) {
            for (let i = 0, l = child.mixins.length; i < l; i++) {
                parent = mergeOptions(parent, child.mixins[i], vm);
            }
        }
    }
    const options = {};
    let key;
    for (key in parent) {
        mergeField(key);
    }
    for (key in child) {
        if (!hasOwn(parent, key)) {
            mergeField(key);
        }
    }
    function mergeField(key) {
        const strat = strats[key] || defaultStrat;
        options[key] = strat(parent[key], child[key], vm, key);
    }
    return options;
}
/**
 * Resolve an asset.
 * This function is used because child instances need access
 * to assets defined in its ancestor chain.
 */
function resolveAsset(options, type, id, warnMissing) {
    /* istanbul ignore if */
    if (typeof id !== 'string') {
        return;
    }
    const assets = options[type];
    // check local registration variations first
    if (hasOwn(assets, id))
        return assets[id];
    const camelizedId = camelize(id);
    if (hasOwn(assets, camelizedId))
        return assets[camelizedId];
    const PascalCaseId = capitalize(camelizedId);
    if (hasOwn(assets, PascalCaseId))
        return assets[PascalCaseId];
    // fallback to prototype chain
    const res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
    if (warnMissing && !res) {
        warn('Failed to resolve ' + type.slice(0, -1) + ': ' + id);
    }
    return res;
}

function validateProp(key, propOptions, propsData, vm) {
    const prop = propOptions[key];
    const absent = !hasOwn(propsData, key);
    let value = propsData[key];
    // boolean casting
    const booleanIndex = getTypeIndex(Boolean, prop.type);
    if (booleanIndex > -1) {
        if (absent && !hasOwn(prop, 'default')) {
            value = false;
        }
        else if (value === '' || value === hyphenate(key)) {
            // only cast empty string / same name to boolean if
            // boolean has higher priority
            const stringIndex = getTypeIndex(String, prop.type);
            if (stringIndex < 0 || booleanIndex < stringIndex) {
                value = true;
            }
        }
    }
    // check default value
    if (value === undefined) {
        value = getPropDefaultValue(vm, prop, key);
        // since the default value is a fresh copy,
        // make sure to observe it.
        const prevShouldObserve = shouldObserve;
        toggleObserving(true);
        observe(value);
        toggleObserving(prevShouldObserve);
    }
    {
        assertProp(prop, key, value, vm, absent);
    }
    return value;
}
/**
 * Get the default value of a prop.
 */
function getPropDefaultValue(vm, prop, key) {
    // no default, return undefined
    if (!hasOwn(prop, 'default')) {
        return undefined;
    }
    const def = prop.default;
    // warn against non-factory defaults for Object & Array
    if (isObject(def)) {
        warn('Invalid default value for prop "' +
            key +
            '": ' +
            'Props with type Object/Array must use a factory function ' +
            'to return the default value.', vm);
    }
    // the raw prop value was also undefined from previous render,
    // return previous default value to avoid unnecessary watcher trigger
    if (vm &&
        vm.$options.propsData &&
        vm.$options.propsData[key] === undefined &&
        vm._props[key] !== undefined) {
        return vm._props[key];
    }
    // call factory function for non-Function types
    // a value is Function if its prototype is function even across different execution context
    return isFunction(def) && getType(prop.type) !== 'Function'
        ? def.call(vm)
        : def;
}
/**
 * Assert whether a prop is valid.
 */
function assertProp(prop, name, value, vm, absent) {
    if (prop.required && absent) {
        warn('Missing required prop: "' + name + '"', vm);
        return;
    }
    if (value == null && !prop.required) {
        return;
    }
    let type = prop.type;
    let valid = !type || type === true;
    const expectedTypes = [];
    if (type) {
        if (!isArray(type)) {
            type = [type];
        }
        for (let i = 0; i < type.length && !valid; i++) {
            const assertedType = assertType(value, type[i], vm);
            expectedTypes.push(assertedType.expectedType || '');
            valid = assertedType.valid;
        }
    }
    const haveExpectedTypes = expectedTypes.some(t => t);
    if (!valid && haveExpectedTypes) {
        warn(getInvalidTypeMessage(name, value, expectedTypes), vm);
        return;
    }
    const validator = prop.validator;
    if (validator) {
        if (!validator(value)) {
            warn('Invalid prop: custom validator check failed for prop "' + name + '".', vm);
        }
    }
}
const simpleCheckRE = /^(String|Number|Boolean|Function|Symbol|BigInt)$/;
function assertType(value, type, vm) {
    let valid;
    const expectedType = getType(type);
    if (simpleCheckRE.test(expectedType)) {
        const t = typeof value;
        valid = t === expectedType.toLowerCase();
        // for primitive wrapper objects
        if (!valid && t === 'object') {
            valid = value instanceof type;
        }
    }
    else if (expectedType === 'Object') {
        valid = isPlainObject(value);
    }
    else if (expectedType === 'Array') {
        valid = isArray(value);
    }
    else {
        try {
            valid = value instanceof type;
        }
        catch (e) {
            warn('Invalid prop type: "' + String(type) + '" is not a constructor', vm);
            valid = false;
        }
    }
    return {
        valid,
        expectedType
    };
}
const functionTypeCheckRE = /^\s*function (\w+)/;
/**
 * Use function string name to check built-in types,
 * because a simple equality check will fail when running
 * across different vms / iframes.
 */
function getType(fn) {
    const match = fn && fn.toString().match(functionTypeCheckRE);
    return match ? match[1] : '';
}
function isSameType(a, b) {
    return getType(a) === getType(b);
}
function getTypeIndex(type, expectedTypes) {
    if (!isArray(expectedTypes)) {
        return isSameType(expectedTypes, type) ? 0 : -1;
    }
    for (let i = 0, len = expectedTypes.length; i < len; i++) {
        if (isSameType(expectedTypes[i], type)) {
            return i;
        }
    }
    return -1;
}
function getInvalidTypeMessage(name, value, expectedTypes) {
    let message = `Invalid prop: type check failed for prop "${name}".` +
        ` Expected ${expectedTypes.map(capitalize).join(', ')}`;
    const expectedType = expectedTypes[0];
    const receivedType = toRawType(value);
    // check if we need to specify expected value
    if (expectedTypes.length === 1 &&
        isExplicable(expectedType) &&
        isExplicable(typeof value) &&
        !isBoolean(expectedType, receivedType)) {
        message += ` with value ${styleValue(value, expectedType)}`;
    }
    message += `, got ${receivedType} `;
    // check if we need to specify received value
    if (isExplicable(receivedType)) {
        message += `with value ${styleValue(value, receivedType)}.`;
    }
    return message;
}
function styleValue(value, type) {
    if (type === 'String') {
        return `"${value}"`;
    }
    else if (type === 'Number') {
        return `${Number(value)}`;
    }
    else {
        return `${value}`;
    }
}
const EXPLICABLE_TYPES = ['string', 'number', 'boolean'];
function isExplicable(value) {
    return EXPLICABLE_TYPES.some(elem => value.toLowerCase() === elem);
}
function isBoolean(...args) {
    return args.some(elem => elem.toLowerCase() === 'boolean');
}

/* not type checking this file because flow doesn't play well with Proxy */
let initProxy;
{
    const allowedGlobals = makeMap('Infinity,undefined,NaN,isFinite,isNaN,' +
        'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
        'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,BigInt,' +
        'require' // for Webpack/Browserify
    );
    const warnNonPresent = (target, key) => {
        warn(`Property or method "${key}" is not defined on the instance but ` +
            'referenced during render. Make sure that this property is reactive, ' +
            'either in the data option, or for class-based components, by ' +
            'initializing the property. ' +
            'See: https://v2.vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.', target);
    };
    const warnReservedPrefix = (target, key) => {
        warn(`Property "${key}" must be accessed with "$data.${key}" because ` +
            'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
            'prevent conflicts with Vue internals. ' +
            'See: https://v2.vuejs.org/v2/api/#data', target);
    };
    const hasProxy = typeof Proxy !== 'undefined' && isNative(Proxy);
    if (hasProxy) {
        const isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
        config.keyCodes = new Proxy(config.keyCodes, {
            set(target, key, value) {
                if (isBuiltInModifier(key)) {
                    warn(`Avoid overwriting built-in modifier in config.keyCodes: .${key}`);
                    return false;
                }
                else {
                    target[key] = value;
                    return true;
                }
            }
        });
    }
    const hasHandler = {
        has(target, key) {
            const has = key in target;
            const isAllowed = allowedGlobals(key) ||
                (typeof key === 'string' &&
                    key.charAt(0) === '_' &&
                    !(key in target.$data));
            if (!has && !isAllowed) {
                if (key in target.$data)
                    warnReservedPrefix(target, key);
                else
                    warnNonPresent(target, key);
            }
            return has || !isAllowed;
        }
    };
    const getHandler = {
        get(target, key) {
            if (typeof key === 'string' && !(key in target)) {
                if (key in target.$data)
                    warnReservedPrefix(target, key);
                else
                    warnNonPresent(target, key);
            }
            return target[key];
        }
    };
    initProxy = function initProxy(vm) {
        if (hasProxy) {
            // determine which proxy handler to use
            const options = vm.$options;
            const handlers = options.render && options.render._withStripped ? getHandler : hasHandler;
            vm._renderProxy = new Proxy(vm, handlers);
        }
        else {
            vm._renderProxy = vm;
        }
    };
}

const sharedPropertyDefinition = {
    enumerable: true,
    configurable: true,
    get: noop,
    set: noop
};
function proxy(target, sourceKey, key) {
    sharedPropertyDefinition.get = function proxyGetter() {
        return this[sourceKey][key];
    };
    sharedPropertyDefinition.set = function proxySetter(val) {
        this[sourceKey][key] = val;
    };
    Object.defineProperty(target, key, sharedPropertyDefinition);
}
function initState(vm) {
    const opts = vm.$options;
    if (opts.props)
        initProps$1(vm, opts.props);
    // Composition API
    initSetup(vm);
    if (opts.methods)
        initMethods(vm, opts.methods);
    if (opts.data) {
        initData(vm);
    }
    else {
        const ob = observe((vm._data = {}));
        ob && ob.vmCount++;
    }
    if (opts.computed)
        initComputed$1(vm, opts.computed);
    if (opts.watch && opts.watch !== nativeWatch) {
        initWatch(vm, opts.watch);
    }
}
function initProps$1(vm, propsOptions) {
    const propsData = vm.$options.propsData || {};
    const props = (vm._props = shallowReactive({}));
    // cache prop keys so that future props updates can iterate using Array
    // instead of dynamic object key enumeration.
    const keys = (vm.$options._propKeys = []);
    const isRoot = !vm.$parent;
    // root instance props should be converted
    if (!isRoot) {
        toggleObserving(false);
    }
    for (const key in propsOptions) {
        keys.push(key);
        const value = validateProp(key, propsOptions, propsData, vm);
        /* istanbul ignore else */
        {
            const hyphenatedKey = hyphenate(key);
            if (isReservedAttribute(hyphenatedKey) ||
                config.isReservedAttr(hyphenatedKey)) {
                warn(`"${hyphenatedKey}" is a reserved attribute and cannot be used as component prop.`, vm);
            }
            defineReactive(props, key, value, () => {
                if (!isRoot && !isUpdatingChildComponent) {
                    warn(`Avoid mutating a prop directly since the value will be ` +
                        `overwritten whenever the parent component re-renders. ` +
                        `Instead, use a data or computed property based on the prop's ` +
                        `value. Prop being mutated: "${key}"`, vm);
                }
            });
        }
        // static props are already proxied on the component's prototype
        // during Vue.extend(). We only need to proxy props defined at
        // instantiation here.
        if (!(key in vm)) {
            proxy(vm, `_props`, key);
        }
    }
    toggleObserving(true);
}
function initData(vm) {
    let data = vm.$options.data;
    data = vm._data = isFunction(data) ? getData(data, vm) : data || {};
    if (!isPlainObject(data)) {
        data = {};
        warn('data functions should return an object:\n' +
                'https://v2.vuejs.org/v2/guide/components.html#data-Must-Be-a-Function', vm);
    }
    // proxy data on instance
    const keys = Object.keys(data);
    const props = vm.$options.props;
    const methods = vm.$options.methods;
    let i = keys.length;
    while (i--) {
        const key = keys[i];
        {
            if (methods && hasOwn(methods, key)) {
                warn(`Method "${key}" has already been defined as a data property.`, vm);
            }
        }
        if (props && hasOwn(props, key)) {
            warn(`The data property "${key}" is already declared as a prop. ` +
                    `Use prop default value instead.`, vm);
        }
        else if (!isReserved(key)) {
            proxy(vm, `_data`, key);
        }
    }
    // observe data
    const ob = observe(data);
    ob && ob.vmCount++;
}
function getData(data, vm) {
    // #7573 disable dep collection when invoking data getters
    pushTarget();
    try {
        return data.call(vm, vm);
    }
    catch (e) {
        handleError(e, vm, `data()`);
        return {};
    }
    finally {
        popTarget();
    }
}
const computedWatcherOptions = { lazy: true };
function initComputed$1(vm, computed) {
    // $flow-disable-line
    const watchers = (vm._computedWatchers = Object.create(null));
    // computed properties are just getters during SSR
    const isSSR = isServerRendering();
    for (const key in computed) {
        const userDef = computed[key];
        const getter = isFunction(userDef) ? userDef : userDef.get;
        if (getter == null) {
            warn(`Getter is missing for computed property "${key}".`, vm);
        }
        if (!isSSR) {
            // create internal watcher for the computed property.
            watchers[key] = new Watcher(vm, getter || noop, noop, computedWatcherOptions);
        }
        // component-defined computed properties are already defined on the
        // component prototype. We only need to define computed properties defined
        // at instantiation here.
        if (!(key in vm)) {
            defineComputed(vm, key, userDef);
        }
        else {
            if (key in vm.$data) {
                warn(`The computed property "${key}" is already defined in data.`, vm);
            }
            else if (vm.$options.props && key in vm.$options.props) {
                warn(`The computed property "${key}" is already defined as a prop.`, vm);
            }
            else if (vm.$options.methods && key in vm.$options.methods) {
                warn(`The computed property "${key}" is already defined as a method.`, vm);
            }
        }
    }
}
function defineComputed(target, key, userDef) {
    const shouldCache = !isServerRendering();
    if (isFunction(userDef)) {
        sharedPropertyDefinition.get = shouldCache
            ? createComputedGetter(key)
            : createGetterInvoker(userDef);
        sharedPropertyDefinition.set = noop;
    }
    else {
        sharedPropertyDefinition.get = userDef.get
            ? shouldCache && userDef.cache !== false
                ? createComputedGetter(key)
                : createGetterInvoker(userDef.get)
            : noop;
        sharedPropertyDefinition.set = userDef.set || noop;
    }
    if (sharedPropertyDefinition.set === noop) {
        sharedPropertyDefinition.set = function () {
            warn(`Computed property "${key}" was assigned to but it has no setter.`, this);
        };
    }
    Object.defineProperty(target, key, sharedPropertyDefinition);
}
function createComputedGetter(key) {
    return function computedGetter() {
        const watcher = this._computedWatchers && this._computedWatchers[key];
        if (watcher) {
            if (watcher.dirty) {
                watcher.evaluate();
            }
            if (Dep.target) {
                if (Dep.target.onTrack) {
                    Dep.target.onTrack({
                        effect: Dep.target,
                        target: this,
                        type: "get" /* TrackOpTypes.GET */,
                        key
                    });
                }
                watcher.depend();
            }
            return watcher.value;
        }
    };
}
function createGetterInvoker(fn) {
    return function computedGetter() {
        return fn.call(this, this);
    };
}
function initMethods(vm, methods) {
    const props = vm.$options.props;
    for (const key in methods) {
        {
            if (typeof methods[key] !== 'function') {
                warn(`Method "${key}" has type "${typeof methods[key]}" in the component definition. ` +
                    `Did you reference the function correctly?`, vm);
            }
            if (props && hasOwn(props, key)) {
                warn(`Method "${key}" has already been defined as a prop.`, vm);
            }
            if (key in vm && isReserved(key)) {
                warn(`Method "${key}" conflicts with an existing Vue instance method. ` +
                    `Avoid defining component methods that start with _ or $.`);
            }
        }
        vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
    }
}
function initWatch(vm, watch) {
    for (const key in watch) {
        const handler = watch[key];
        if (isArray(handler)) {
            for (let i = 0; i < handler.length; i++) {
                createWatcher(vm, key, handler[i]);
            }
        }
        else {
            createWatcher(vm, key, handler);
        }
    }
}
function createWatcher(vm, expOrFn, handler, options) {
    if (isPlainObject(handler)) {
        options = handler;
        handler = handler.handler;
    }
    if (typeof handler === 'string') {
        handler = vm[handler];
    }
    return vm.$watch(expOrFn, handler, options);
}
function stateMixin(Vue) {
    // flow somehow has problems with directly declared definition object
    // when using Object.defineProperty, so we have to procedurally build up
    // the object here.
    const dataDef = {};
    dataDef.get = function () {
        return this._data;
    };
    const propsDef = {};
    propsDef.get = function () {
        return this._props;
    };
    {
        dataDef.set = function () {
            warn('Avoid replacing instance root $data. ' +
                'Use nested data properties instead.', this);
        };
        propsDef.set = function () {
            warn(`$props is readonly.`, this);
        };
    }
    Object.defineProperty(Vue.prototype, '$data', dataDef);
    Object.defineProperty(Vue.prototype, '$props', propsDef);
    Vue.prototype.$set = set;
    Vue.prototype.$delete = del;
    Vue.prototype.$watch = function (expOrFn, cb, options) {
        const vm = this;
        if (isPlainObject(cb)) {
            return createWatcher(vm, expOrFn, cb, options);
        }
        options = options || {};
        options.user = true;
        const watcher = new Watcher(vm, expOrFn, cb, options);
        if (options.immediate) {
            const info = `callback for immediate watcher "${watcher.expression}"`;
            pushTarget();
            invokeWithErrorHandling(cb, vm, [watcher.value], vm, info);
            popTarget();
        }
        return function unwatchFn() {
            watcher.teardown();
        };
    };
}

let uid = 0;
function initMixin$1(Vue) {
    Vue.prototype._init = function (options) {
        const vm = this;
        // a uid
        vm._uid = uid++;
        let startTag, endTag;
        /* istanbul ignore if */
        if (config.performance && mark) {
            startTag = `vue-perf-start:${vm._uid}`;
            endTag = `vue-perf-end:${vm._uid}`;
            mark(startTag);
        }
        // a flag to mark this as a Vue instance without having to do instanceof
        // check
        vm._isVue = true;
        // avoid instances from being observed
        vm.__v_skip = true;
        // effect scope
        vm._scope = new EffectScope(true /* detached */);
        vm._scope._vm = true;
        // merge options
        if (options && options._isComponent) {
            // optimize internal component instantiation
            // since dynamic options merging is pretty slow, and none of the
            // internal component options needs special treatment.
            initInternalComponent(vm, options);
        }
        else {
            vm.$options = mergeOptions(resolveConstructorOptions(vm.constructor), options || {}, vm);
        }
        /* istanbul ignore else */
        {
            initProxy(vm);
        }
        // expose real self
        vm._self = vm;
        initLifecycle(vm);
        initEvents(vm);
        initRender(vm);
        callHook$1(vm, 'beforeCreate', undefined, false /* setContext */);
        initInjections(vm); // resolve injections before data/props
        initState(vm);
        initProvide(vm); // resolve provide after data/props
        callHook$1(vm, 'created');
        /* istanbul ignore if */
        if (config.performance && mark) {
            vm._name = formatComponentName(vm, false);
            mark(endTag);
            measure(`vue ${vm._name} init`, startTag, endTag);
        }
        if (vm.$options.el) {
            vm.$mount(vm.$options.el);
        }
    };
}
function initInternalComponent(vm, options) {
    const opts = (vm.$options = Object.create(vm.constructor.options));
    // doing this because it's faster than dynamic enumeration.
    const parentVnode = options._parentVnode;
    opts.parent = options.parent;
    opts._parentVnode = parentVnode;
    const vnodeComponentOptions = parentVnode.componentOptions;
    opts.propsData = vnodeComponentOptions.propsData;
    opts._parentListeners = vnodeComponentOptions.listeners;
    opts._renderChildren = vnodeComponentOptions.children;
    opts._componentTag = vnodeComponentOptions.tag;
    if (options.render) {
        opts.render = options.render;
        opts.staticRenderFns = options.staticRenderFns;
    }
}
function resolveConstructorOptions(Ctor) {
    let options = Ctor.options;
    if (Ctor.super) {
        const superOptions = resolveConstructorOptions(Ctor.super);
        const cachedSuperOptions = Ctor.superOptions;
        if (superOptions !== cachedSuperOptions) {
            // super option changed,
            // need to resolve new options.
            Ctor.superOptions = superOptions;
            // check if there are any late-modified/attached options (#4976)
            const modifiedOptions = resolveModifiedOptions(Ctor);
            // update base extend options
            if (modifiedOptions) {
                extend(Ctor.extendOptions, modifiedOptions);
            }
            options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
            if (options.name) {
                options.components[options.name] = Ctor;
            }
        }
    }
    return options;
}
function resolveModifiedOptions(Ctor) {
    let modified;
    const latest = Ctor.options;
    const sealed = Ctor.sealedOptions;
    for (const key in latest) {
        if (latest[key] !== sealed[key]) {
            if (!modified)
                modified = {};
            modified[key] = latest[key];
        }
    }
    return modified;
}

function Vue(options) {
    if (!(this instanceof Vue)) {
        warn('Vue is a constructor and should be called with the `new` keyword');
    }
    this._init(options);
}
//@ts-expect-error Vue has function type
initMixin$1(Vue);
//@ts-expect-error Vue has function type
stateMixin(Vue);
//@ts-expect-error Vue has function type
eventsMixin(Vue);
//@ts-expect-error Vue has function type
lifecycleMixin(Vue);
//@ts-expect-error Vue has function type
renderMixin(Vue);

function initUse(Vue) {
    Vue.use = function (plugin) {
        const installedPlugins = this._installedPlugins || (this._installedPlugins = []);
        if (installedPlugins.indexOf(plugin) > -1) {
            return this;
        }
        // additional parameters
        const args = toArray(arguments, 1);
        args.unshift(this);
        if (isFunction(plugin.install)) {
            plugin.install.apply(plugin, args);
        }
        else if (isFunction(plugin)) {
            plugin.apply(null, args);
        }
        installedPlugins.push(plugin);
        return this;
    };
}

function initMixin(Vue) {
    Vue.mixin = function (mixin) {
        this.options = mergeOptions(this.options, mixin);
        return this;
    };
}

function initExtend(Vue) {
    /**
     * Each instance constructor, including Vue, has a unique
     * cid. This enables us to create wrapped "child
     * constructors" for prototypal inheritance and cache them.
     */
    Vue.cid = 0;
    let cid = 1;
    /**
     * Class inheritance
     */
    Vue.extend = function (extendOptions) {
        extendOptions = extendOptions || {};
        const Super = this;
        const SuperId = Super.cid;
        const cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
        if (cachedCtors[SuperId]) {
            return cachedCtors[SuperId];
        }
        const name = getComponentName(extendOptions) || getComponentName(Super.options);
        if (name) {
            validateComponentName(name);
        }
        const Sub = function VueComponent(options) {
            this._init(options);
        };
        Sub.prototype = Object.create(Super.prototype);
        Sub.prototype.constructor = Sub;
        Sub.cid = cid++;
        Sub.options = mergeOptions(Super.options, extendOptions);
        Sub['super'] = Super;
        // For props and computed properties, we define the proxy getters on
        // the Vue instances at extension time, on the extended prototype. This
        // avoids Object.defineProperty calls for each instance created.
        if (Sub.options.props) {
            initProps(Sub);
        }
        if (Sub.options.computed) {
            initComputed(Sub);
        }
        // allow further extension/mixin/plugin usage
        Sub.extend = Super.extend;
        Sub.mixin = Super.mixin;
        Sub.use = Super.use;
        // create asset registers, so extended classes
        // can have their private assets too.
        ASSET_TYPES.forEach(function (type) {
            Sub[type] = Super[type];
        });
        // enable recursive self-lookup
        if (name) {
            Sub.options.components[name] = Sub;
        }
        // keep a reference to the super options at extension time.
        // later at instantiation we can check if Super's options have
        // been updated.
        Sub.superOptions = Super.options;
        Sub.extendOptions = extendOptions;
        Sub.sealedOptions = extend({}, Sub.options);
        // cache constructor
        cachedCtors[SuperId] = Sub;
        return Sub;
    };
}
function initProps(Comp) {
    const props = Comp.options.props;
    for (const key in props) {
        proxy(Comp.prototype, `_props`, key);
    }
}
function initComputed(Comp) {
    const computed = Comp.options.computed;
    for (const key in computed) {
        defineComputed(Comp.prototype, key, computed[key]);
    }
}

function initAssetRegisters(Vue) {
    /**
     * Create asset registration methods.
     */
    ASSET_TYPES.forEach(type => {
        // @ts-expect-error function is not exact same type
        Vue[type] = function (id, definition) {
            if (!definition) {
                return this.options[type + 's'][id];
            }
            else {
                /* istanbul ignore if */
                if (type === 'component') {
                    validateComponentName(id);
                }
                if (type === 'component' && isPlainObject(definition)) {
                    // @ts-expect-error
                    definition.name = definition.name || id;
                    definition = this.options._base.extend(definition);
                }
                if (type === 'directive' && isFunction(definition)) {
                    definition = { bind: definition, update: definition };
                }
                this.options[type + 's'][id] = definition;
                return definition;
            }
        };
    });
}

function _getComponentName(opts) {
    return opts && (getComponentName(opts.Ctor.options) || opts.tag);
}
function matches(pattern, name) {
    if (isArray(pattern)) {
        return pattern.indexOf(name) > -1;
    }
    else if (typeof pattern === 'string') {
        return pattern.split(',').indexOf(name) > -1;
    }
    else if (isRegExp(pattern)) {
        return pattern.test(name);
    }
    /* istanbul ignore next */
    return false;
}
function pruneCache(keepAliveInstance, filter) {
    const { cache, keys, _vnode } = keepAliveInstance;
    for (const key in cache) {
        const entry = cache[key];
        if (entry) {
            const name = entry.name;
            if (name && !filter(name)) {
                pruneCacheEntry(cache, key, keys, _vnode);
            }
        }
    }
}
function pruneCacheEntry(cache, key, keys, current) {
    const entry = cache[key];
    if (entry && (!current || entry.tag !== current.tag)) {
        // @ts-expect-error can be undefined
        entry.componentInstance.$destroy();
    }
    cache[key] = null;
    remove$2(keys, key);
}
const patternTypes = [String, RegExp, Array];
// TODO defineComponent
var KeepAlive = {
    name: 'keep-alive',
    abstract: true,
    props: {
        include: patternTypes,
        exclude: patternTypes,
        max: [String, Number]
    },
    methods: {
        cacheVNode() {
            const { cache, keys, vnodeToCache, keyToCache } = this;
            if (vnodeToCache) {
                const { tag, componentInstance, componentOptions } = vnodeToCache;
                cache[keyToCache] = {
                    name: _getComponentName(componentOptions),
                    tag,
                    componentInstance
                };
                keys.push(keyToCache);
                // prune oldest entry
                if (this.max && keys.length > parseInt(this.max)) {
                    pruneCacheEntry(cache, keys[0], keys, this._vnode);
                }
                this.vnodeToCache = null;
            }
        }
    },
    created() {
        this.cache = Object.create(null);
        this.keys = [];
    },
    destroyed() {
        for (const key in this.cache) {
            pruneCacheEntry(this.cache, key, this.keys);
        }
    },
    mounted() {
        this.cacheVNode();
        this.$watch('include', val => {
            pruneCache(this, name => matches(val, name));
        });
        this.$watch('exclude', val => {
            pruneCache(this, name => !matches(val, name));
        });
    },
    updated() {
        this.cacheVNode();
    },
    render() {
        const slot = this.$slots.default;
        const vnode = getFirstComponentChild(slot);
        const componentOptions = vnode && vnode.componentOptions;
        if (componentOptions) {
            // check pattern
            const name = _getComponentName(componentOptions);
            const { include, exclude } = this;
            if (
            // not included
            (include && (!name || !matches(include, name))) ||
                // excluded
                (exclude && name && matches(exclude, name))) {
                return vnode;
            }
            const { cache, keys } = this;
            const key = vnode.key == null
                ? // same constructor may get registered as different local components
                    // so cid alone is not enough (#3269)
                    componentOptions.Ctor.cid +
                        (componentOptions.tag ? `::${componentOptions.tag}` : '')
                : vnode.key;
            if (cache[key]) {
                vnode.componentInstance = cache[key].componentInstance;
                // make current key freshest
                remove$2(keys, key);
                keys.push(key);
            }
            else {
                // delay setting the cache until update
                this.vnodeToCache = vnode;
                this.keyToCache = key;
            }
            // @ts-expect-error can vnode.data can be undefined
            vnode.data.keepAlive = true;
        }
        return vnode || (slot && slot[0]);
    }
};

var builtInComponents = {
    KeepAlive
};

function initGlobalAPI(Vue) {
    // config
    const configDef = {};
    configDef.get = () => config;
    {
        configDef.set = () => {
            warn('Do not replace the Vue.config object, set individual fields instead.');
        };
    }
    Object.defineProperty(Vue, 'config', configDef);
    // exposed util methods.
    // NOTE: these are not considered part of the public API - avoid relying on
    // them unless you are aware of the risk.
    Vue.util = {
        warn,
        extend,
        mergeOptions,
        defineReactive
    };
    Vue.set = set;
    Vue.delete = del;
    Vue.nextTick = nextTick;
    // 2.6 explicit observable API
    Vue.observable = (obj) => {
        observe(obj);
        return obj;
    };
    Vue.options = Object.create(null);
    ASSET_TYPES.forEach(type => {
        Vue.options[type + 's'] = Object.create(null);
    });
    // this is used to identify the "base" constructor to extend all plain-object
    // components with in Weex's multi-instance scenarios.
    Vue.options._base = Vue;
    extend(Vue.options.components, builtInComponents);
    initUse(Vue);
    initMixin(Vue);
    initExtend(Vue);
    initAssetRegisters(Vue);
}

initGlobalAPI(Vue);
Object.defineProperty(Vue.prototype, '$isServer', {
    get: isServerRendering
});
Object.defineProperty(Vue.prototype, '$ssrContext', {
    get() {
        /* istanbul ignore next */
        return this.$vnode && this.$vnode.ssrContext;
    }
});
// expose FunctionalRenderContext for ssr runtime helper installation
Object.defineProperty(Vue, 'FunctionalRenderContext', {
    value: FunctionalRenderContext
});
Vue.version = version;

// these are reserved for web because they are directly compiled away
// during template compilation
const isReservedAttr = makeMap('style,class');
// attributes that should be using props for binding
const acceptValue = makeMap('input,textarea,option,select,progress');
const mustUseProp = (tag, type, attr) => {
    return ((attr === 'value' && acceptValue(tag) && type !== 'button') ||
        (attr === 'selected' && tag === 'option') ||
        (attr === 'checked' && tag === 'input') ||
        (attr === 'muted' && tag === 'video'));
};
const isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
const isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');
const convertEnumeratedValue = (key, value) => {
    return isFalsyAttrValue(value) || value === 'false'
        ? 'false'
        : // allow arbitrary string value for contenteditable
            key === 'contenteditable' && isValidContentEditableValue(value)
                ? value
                : 'true';
};
const isBooleanAttr = makeMap('allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
    'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
    'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
    'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
    'required,reversed,scoped,seamless,selected,sortable,' +
    'truespeed,typemustmatch,visible');
const xlinkNS = 'http://www.w3.org/1999/xlink';
const isXlink = (name) => {
    return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink';
};
const getXlinkProp = (name) => {
    return isXlink(name) ? name.slice(6, name.length) : '';
};
const isFalsyAttrValue = (val) => {
    return val == null || val === false;
};

function genClassForVnode(vnode) {
    let data = vnode.data;
    let parentNode = vnode;
    let childNode = vnode;
    while (isDef(childNode.componentInstance)) {
        childNode = childNode.componentInstance._vnode;
        if (childNode && childNode.data) {
            data = mergeClassData(childNode.data, data);
        }
    }
    // @ts-expect-error parentNode.parent not VNodeWithData
    while (isDef((parentNode = parentNode.parent))) {
        if (parentNode && parentNode.data) {
            data = mergeClassData(data, parentNode.data);
        }
    }
    return renderClass(data.staticClass, data.class);
}
function mergeClassData(child, parent) {
    return {
        staticClass: concat(child.staticClass, parent.staticClass),
        class: isDef(child.class) ? [child.class, parent.class] : parent.class
    };
}
function renderClass(staticClass, dynamicClass) {
    if (isDef(staticClass) || isDef(dynamicClass)) {
        return concat(staticClass, stringifyClass(dynamicClass));
    }
    /* istanbul ignore next */
    return '';
}
function concat(a, b) {
    return a ? (b ? a + ' ' + b : a) : b || '';
}
function stringifyClass(value) {
    if (Array.isArray(value)) {
        return stringifyArray(value);
    }
    if (isObject(value)) {
        return stringifyObject(value);
    }
    if (typeof value === 'string') {
        return value;
    }
    /* istanbul ignore next */
    return '';
}
function stringifyArray(value) {
    let res = '';
    let stringified;
    for (let i = 0, l = value.length; i < l; i++) {
        if (isDef((stringified = stringifyClass(value[i]))) && stringified !== '') {
            if (res)
                res += ' ';
            res += stringified;
        }
    }
    return res;
}
function stringifyObject(value) {
    let res = '';
    for (const key in value) {
        if (value[key]) {
            if (res)
                res += ' ';
            res += key;
        }
    }
    return res;
}

const namespaceMap = {
    svg: 'http://www.w3.org/2000/svg',
    math: 'http://www.w3.org/1998/Math/MathML'
};
const isHTMLTag = makeMap('html,body,base,head,link,meta,style,title,' +
    'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
    'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
    'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
    's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
    'embed,object,param,source,canvas,script,noscript,del,ins,' +
    'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
    'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
    'output,progress,select,textarea,' +
    'details,dialog,menu,menuitem,summary,' +
    'content,element,shadow,template,blockquote,iframe,tfoot');
// this map is intentionally selective, only covering SVG elements that may
// contain child elements.
const isSVG = makeMap('svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
    'foreignobject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
    'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view', true);
const isReservedTag = (tag) => {
    return isHTMLTag(tag) || isSVG(tag);
};
function getTagNamespace(tag) {
    if (isSVG(tag)) {
        return 'svg';
    }
    // basic support for MathML
    // note it doesn't support other MathML elements being component roots
    if (tag === 'math') {
        return 'math';
    }
}
const unknownElementCache = Object.create(null);
function isUnknownElement(tag) {
    /* istanbul ignore if */
    if (!inBrowser) {
        return true;
    }
    if (isReservedTag(tag)) {
        return false;
    }
    tag = tag.toLowerCase();
    /* istanbul ignore if */
    if (unknownElementCache[tag] != null) {
        return unknownElementCache[tag];
    }
    const el = document.createElement(tag);
    if (tag.indexOf('-') > -1) {
        // http://stackoverflow.com/a/28210364/1070244
        return (unknownElementCache[tag] =
            el.constructor === window.HTMLUnknownElement ||
                el.constructor === window.HTMLElement);
    }
    else {
        return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()));
    }
}
const isTextInputType = makeMap('text,number,password,search,email,tel,url');

/**
 * Query an element selector if it's not an element already.
 */
function query(el) {
    if (typeof el === 'string') {
        const selected = document.querySelector(el);
        if (!selected) {
            warn('Cannot find element: ' + el);
            return document.createElement('div');
        }
        return selected;
    }
    else {
        return el;
    }
}

function createElement(tagName, vnode) {
    const elm = document.createElement(tagName);
    if (tagName !== 'select') {
        return elm;
    }
    // false or null will remove the attribute but undefined will not
    if (vnode.data &&
        vnode.data.attrs &&
        vnode.data.attrs.multiple !== undefined) {
        elm.setAttribute('multiple', 'multiple');
    }
    return elm;
}
function createElementNS(namespace, tagName) {
    return document.createElementNS(namespaceMap[namespace], tagName);
}
function createTextNode(text) {
    return document.createTextNode(text);
}
function createComment(text) {
    return document.createComment(text);
}
function insertBefore(parentNode, newNode, referenceNode) {
    parentNode.insertBefore(newNode, referenceNode);
}
function removeChild(node, child) {
    node.removeChild(child);
}
function appendChild(node, child) {
    node.appendChild(child);
}
function parentNode(node) {
    return node.parentNode;
}
function nextSibling(node) {
    return node.nextSibling;
}
function tagName(node) {
    return node.tagName;
}
function setTextContent(node, text) {
    node.textContent = text;
}
function setStyleScope(node, scopeId) {
    node.setAttribute(scopeId, '');
}

var nodeOps = /*#__PURE__*/Object.freeze({
  __proto__: null,
  createElement: createElement,
  createElementNS: createElementNS,
  createTextNode: createTextNode,
  createComment: createComment,
  insertBefore: insertBefore,
  removeChild: removeChild,
  appendChild: appendChild,
  parentNode: parentNode,
  nextSibling: nextSibling,
  tagName: tagName,
  setTextContent: setTextContent,
  setStyleScope: setStyleScope
});

var ref = {
    create(_, vnode) {
        registerRef(vnode);
    },
    update(oldVnode, vnode) {
        if (oldVnode.data.ref !== vnode.data.ref) {
            registerRef(oldVnode, true);
            registerRef(vnode);
        }
    },
    destroy(vnode) {
        registerRef(vnode, true);
    }
};
function registerRef(vnode, isRemoval) {
    const ref = vnode.data.ref;
    if (!isDef(ref))
        return;
    const vm = vnode.context;
    const refValue = vnode.componentInstance || vnode.elm;
    const value = isRemoval ? null : refValue;
    const $refsValue = isRemoval ? undefined : refValue;
    if (isFunction(ref)) {
        invokeWithErrorHandling(ref, vm, [value], vm, `template ref function`);
        return;
    }
    const isFor = vnode.data.refInFor;
    const _isString = typeof ref === 'string' || typeof ref === 'number';
    const _isRef = isRef(ref);
    const refs = vm.$refs;
    if (_isString || _isRef) {
        if (isFor) {
            const existing = _isString ? refs[ref] : ref.value;
            if (isRemoval) {
                isArray(existing) && remove$2(existing, refValue);
            }
            else {
                if (!isArray(existing)) {
                    if (_isString) {
                        refs[ref] = [refValue];
                        setSetupRef(vm, ref, refs[ref]);
                    }
                    else {
                        ref.value = [refValue];
                    }
                }
                else if (!existing.includes(refValue)) {
                    existing.push(refValue);
                }
            }
        }
        else if (_isString) {
            if (isRemoval && refs[ref] !== refValue) {
                return;
            }
            refs[ref] = $refsValue;
            setSetupRef(vm, ref, value);
        }
        else if (_isRef) {
            if (isRemoval && ref.value !== refValue) {
                return;
            }
            ref.value = value;
        }
        else {
            warn(`Invalid template ref type: ${typeof ref}`);
        }
    }
}
function setSetupRef({ _setupState }, key, val) {
    if (_setupState && hasOwn(_setupState, key)) {
        if (isRef(_setupState[key])) {
            _setupState[key].value = val;
        }
        else {
            _setupState[key] = val;
        }
    }
}

/**
 * Virtual DOM patching algorithm based on Snabbdom by
 * Simon Friis Vindum (@paldepind)
 * Licensed under the MIT License
 * https://github.com/paldepind/snabbdom/blob/master/LICENSE
 *
 * modified by Evan You (@yyx990803)
 *
 * Not type-checking this because this file is perf-critical and the cost
 * of making flow understand it is not worth it.
 */
const emptyNode = new VNode('', {}, []);
const hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
function sameVnode(a, b) {
    return (a.key === b.key &&
        a.asyncFactory === b.asyncFactory &&
        ((a.tag === b.tag &&
            a.isComment === b.isComment &&
            isDef(a.data) === isDef(b.data) &&
            sameInputType(a, b)) ||
            (isTrue(a.isAsyncPlaceholder) && isUndef(b.asyncFactory.error))));
}
function sameInputType(a, b) {
    if (a.tag !== 'input')
        return true;
    let i;
    const typeA = isDef((i = a.data)) && isDef((i = i.attrs)) && i.type;
    const typeB = isDef((i = b.data)) && isDef((i = i.attrs)) && i.type;
    return typeA === typeB || (isTextInputType(typeA) && isTextInputType(typeB));
}
function createKeyToOldIdx(children, beginIdx, endIdx) {
    let i, key;
    const map = {};
    for (i = beginIdx; i <= endIdx; ++i) {
        key = children[i].key;
        if (isDef(key))
            map[key] = i;
    }
    return map;
}
function createPatchFunction(backend) {
    let i, j;
    const cbs = {};
    const { modules, nodeOps } = backend;
    for (i = 0; i < hooks.length; ++i) {
        cbs[hooks[i]] = [];
        for (j = 0; j < modules.length; ++j) {
            if (isDef(modules[j][hooks[i]])) {
                cbs[hooks[i]].push(modules[j][hooks[i]]);
            }
        }
    }
    function emptyNodeAt(elm) {
        return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm);
    }
    function createRmCb(childElm, listeners) {
        function remove() {
            if (--remove.listeners === 0) {
                removeNode(childElm);
            }
        }
        remove.listeners = listeners;
        return remove;
    }
    function removeNode(el) {
        const parent = nodeOps.parentNode(el);
        // element may have already been removed due to v-html / v-text
        if (isDef(parent)) {
            nodeOps.removeChild(parent, el);
        }
    }
    function isUnknownElement(vnode, inVPre) {
        return (!inVPre &&
            !vnode.ns &&
            !(config.ignoredElements.length &&
                config.ignoredElements.some(ignore => {
                    return isRegExp(ignore)
                        ? ignore.test(vnode.tag)
                        : ignore === vnode.tag;
                })) &&
            config.isUnknownElement(vnode.tag));
    }
    let creatingElmInVPre = 0;
    function createElm(vnode, insertedVnodeQueue, parentElm, refElm, nested, ownerArray, index) {
        if (isDef(vnode.elm) && isDef(ownerArray)) {
            // This vnode was used in a previous render!
            // now it's used as a new node, overwriting its elm would cause
            // potential patch errors down the road when it's used as an insertion
            // reference node. Instead, we clone the node on-demand before creating
            // associated DOM element for it.
            vnode = ownerArray[index] = cloneVNode(vnode);
        }
        vnode.isRootInsert = !nested; // for transition enter check
        if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
            return;
        }
        const data = vnode.data;
        const children = vnode.children;
        const tag = vnode.tag;
        if (isDef(tag)) {
            {
                if (data && data.pre) {
                    creatingElmInVPre++;
                }
                if (isUnknownElement(vnode, creatingElmInVPre)) {
                    warn('Unknown custom element: <' +
                        tag +
                        '> - did you ' +
                        'register the component correctly? For recursive components, ' +
                        'make sure to provide the "name" option.', vnode.context);
                }
            }
            vnode.elm = vnode.ns
                ? nodeOps.createElementNS(vnode.ns, tag)
                : nodeOps.createElement(tag, vnode);
            setScope(vnode);
            createChildren(vnode, children, insertedVnodeQueue);
            if (isDef(data)) {
                invokeCreateHooks(vnode, insertedVnodeQueue);
            }
            insert(parentElm, vnode.elm, refElm);
            if (data && data.pre) {
                creatingElmInVPre--;
            }
        }
        else if (isTrue(vnode.isComment)) {
            vnode.elm = nodeOps.createComment(vnode.text);
            insert(parentElm, vnode.elm, refElm);
        }
        else {
            vnode.elm = nodeOps.createTextNode(vnode.text);
            insert(parentElm, vnode.elm, refElm);
        }
    }
    function createComponent(vnode, insertedVnodeQueue, parentElm, refElm) {
        let i = vnode.data;
        if (isDef(i)) {
            const isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
            if (isDef((i = i.hook)) && isDef((i = i.init))) {
                i(vnode, false /* hydrating */);
            }
            // after calling the init hook, if the vnode is a child component
            // it should've created a child instance and mounted it. the child
            // component also has set the placeholder vnode's elm.
            // in that case we can just return the element and be done.
            if (isDef(vnode.componentInstance)) {
                initComponent(vnode, insertedVnodeQueue);
                insert(parentElm, vnode.elm, refElm);
                if (isTrue(isReactivated)) {
                    reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
                }
                return true;
            }
        }
    }
    function initComponent(vnode, insertedVnodeQueue) {
        if (isDef(vnode.data.pendingInsert)) {
            insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
            vnode.data.pendingInsert = null;
        }
        vnode.elm = vnode.componentInstance.$el;
        if (isPatchable(vnode)) {
            invokeCreateHooks(vnode, insertedVnodeQueue);
            setScope(vnode);
        }
        else {
            // empty component root.
            // skip all element-related modules except for ref (#3455)
            registerRef(vnode);
            // make sure to invoke the insert hook
            insertedVnodeQueue.push(vnode);
        }
    }
    function reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm) {
        let i;
        // hack for #4339: a reactivated component with inner transition
        // does not trigger because the inner node's created hooks are not called
        // again. It's not ideal to involve module-specific logic in here but
        // there doesn't seem to be a better way to do it.
        let innerNode = vnode;
        while (innerNode.componentInstance) {
            innerNode = innerNode.componentInstance._vnode;
            if (isDef((i = innerNode.data)) && isDef((i = i.transition))) {
                for (i = 0; i < cbs.activate.length; ++i) {
                    cbs.activate[i](emptyNode, innerNode);
                }
                insertedVnodeQueue.push(innerNode);
                break;
            }
        }
        // unlike a newly created component,
        // a reactivated keep-alive component doesn't insert itself
        insert(parentElm, vnode.elm, refElm);
    }
    function insert(parent, elm, ref) {
        if (isDef(parent)) {
            if (isDef(ref)) {
                if (nodeOps.parentNode(ref) === parent) {
                    nodeOps.insertBefore(parent, elm, ref);
                }
            }
            else {
                nodeOps.appendChild(parent, elm);
            }
        }
    }
    function createChildren(vnode, children, insertedVnodeQueue) {
        if (isArray(children)) {
            {
                checkDuplicateKeys(children);
            }
            for (let i = 0; i < children.length; ++i) {
                createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
            }
        }
        else if (isPrimitive(vnode.text)) {
            nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
        }
    }
    function isPatchable(vnode) {
        while (vnode.componentInstance) {
            vnode = vnode.componentInstance._vnode;
        }
        return isDef(vnode.tag);
    }
    function invokeCreateHooks(vnode, insertedVnodeQueue) {
        for (let i = 0; i < cbs.create.length; ++i) {
            cbs.create[i](emptyNode, vnode);
        }
        i = vnode.data.hook; // Reuse variable
        if (isDef(i)) {
            if (isDef(i.create))
                i.create(emptyNode, vnode);
            if (isDef(i.insert))
                insertedVnodeQueue.push(vnode);
        }
    }
    // set scope id attribute for scoped CSS.
    // this is implemented as a special case to avoid the overhead
    // of going through the normal attribute patching process.
    function setScope(vnode) {
        let i;
        if (isDef((i = vnode.fnScopeId))) {
            nodeOps.setStyleScope(vnode.elm, i);
        }
        else {
            let ancestor = vnode;
            while (ancestor) {
                if (isDef((i = ancestor.context)) && isDef((i = i.$options._scopeId))) {
                    nodeOps.setStyleScope(vnode.elm, i);
                }
                ancestor = ancestor.parent;
            }
        }
        // for slot content they should also get the scopeId from the host instance.
        if (isDef((i = activeInstance)) &&
            i !== vnode.context &&
            i !== vnode.fnContext &&
            isDef((i = i.$options._scopeId))) {
            nodeOps.setStyleScope(vnode.elm, i);
        }
    }
    function addVnodes(parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
        for (; startIdx <= endIdx; ++startIdx) {
            createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
        }
    }
    function invokeDestroyHook(vnode) {
        let i, j;
        const data = vnode.data;
        if (isDef(data)) {
            if (isDef((i = data.hook)) && isDef((i = i.destroy)))
                i(vnode);
            for (i = 0; i < cbs.destroy.length; ++i)
                cbs.destroy[i](vnode);
        }
        if (isDef((i = vnode.children))) {
            for (j = 0; j < vnode.children.length; ++j) {
                invokeDestroyHook(vnode.children[j]);
            }
        }
    }
    function removeVnodes(vnodes, startIdx, endIdx) {
        for (; startIdx <= endIdx; ++startIdx) {
            const ch = vnodes[startIdx];
            if (isDef(ch)) {
                if (isDef(ch.tag)) {
                    removeAndInvokeRemoveHook(ch);
                    invokeDestroyHook(ch);
                }
                else {
                    // Text node
                    removeNode(ch.elm);
                }
            }
        }
    }
    function removeAndInvokeRemoveHook(vnode, rm) {
        if (isDef(rm) || isDef(vnode.data)) {
            let i;
            const listeners = cbs.remove.length + 1;
            if (isDef(rm)) {
                // we have a recursively passed down rm callback
                // increase the listeners count
                rm.listeners += listeners;
            }
            else {
                // directly removing
                rm = createRmCb(vnode.elm, listeners);
            }
            // recursively invoke hooks on child component root node
            if (isDef((i = vnode.componentInstance)) &&
                isDef((i = i._vnode)) &&
                isDef(i.data)) {
                removeAndInvokeRemoveHook(i, rm);
            }
            for (i = 0; i < cbs.remove.length; ++i) {
                cbs.remove[i](vnode, rm);
            }
            if (isDef((i = vnode.data.hook)) && isDef((i = i.remove))) {
                i(vnode, rm);
            }
            else {
                rm();
            }
        }
        else {
            removeNode(vnode.elm);
        }
    }
    function updateChildren(parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
        let oldStartIdx = 0;
        let newStartIdx = 0;
        let oldEndIdx = oldCh.length - 1;
        let oldStartVnode = oldCh[0];
        let oldEndVnode = oldCh[oldEndIdx];
        let newEndIdx = newCh.length - 1;
        let newStartVnode = newCh[0];
        let newEndVnode = newCh[newEndIdx];
        let oldKeyToIdx, idxInOld, vnodeToMove, refElm;
        // removeOnly is a special flag used only by <transition-group>
        // to ensure removed elements stay in correct relative positions
        // during leaving transitions
        const canMove = !removeOnly;
        {
            checkDuplicateKeys(newCh);
        }
        while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
            if (isUndef(oldStartVnode)) {
                oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
            }
            else if (isUndef(oldEndVnode)) {
                oldEndVnode = oldCh[--oldEndIdx];
            }
            else if (sameVnode(oldStartVnode, newStartVnode)) {
                patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
                oldStartVnode = oldCh[++oldStartIdx];
                newStartVnode = newCh[++newStartIdx];
            }
            else if (sameVnode(oldEndVnode, newEndVnode)) {
                patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
                oldEndVnode = oldCh[--oldEndIdx];
                newEndVnode = newCh[--newEndIdx];
            }
            else if (sameVnode(oldStartVnode, newEndVnode)) {
                // Vnode moved right
                patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
                canMove &&
                    nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
                oldStartVnode = oldCh[++oldStartIdx];
                newEndVnode = newCh[--newEndIdx];
            }
            else if (sameVnode(oldEndVnode, newStartVnode)) {
                // Vnode moved left
                patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
                canMove &&
                    nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
                oldEndVnode = oldCh[--oldEndIdx];
                newStartVnode = newCh[++newStartIdx];
            }
            else {
                if (isUndef(oldKeyToIdx))
                    oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx);
                idxInOld = isDef(newStartVnode.key)
                    ? oldKeyToIdx[newStartVnode.key]
                    : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
                if (isUndef(idxInOld)) {
                    // New element
                    createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
                }
                else {
                    vnodeToMove = oldCh[idxInOld];
                    if (sameVnode(vnodeToMove, newStartVnode)) {
                        patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
                        oldCh[idxInOld] = undefined;
                        canMove &&
                            nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
                    }
                    else {
                        // same key but different element. treat as new element
                        createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
                    }
                }
                newStartVnode = newCh[++newStartIdx];
            }
        }
        if (oldStartIdx > oldEndIdx) {
            refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
            addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
        }
        else if (newStartIdx > newEndIdx) {
            removeVnodes(oldCh, oldStartIdx, oldEndIdx);
        }
    }
    function checkDuplicateKeys(children) {
        const seenKeys = {};
        for (let i = 0; i < children.length; i++) {
            const vnode = children[i];
            const key = vnode.key;
            if (isDef(key)) {
                if (seenKeys[key]) {
                    warn(`Duplicate keys detected: '${key}'. This may cause an update error.`, vnode.context);
                }
                else {
                    seenKeys[key] = true;
                }
            }
        }
    }
    function findIdxInOld(node, oldCh, start, end) {
        for (let i = start; i < end; i++) {
            const c = oldCh[i];
            if (isDef(c) && sameVnode(node, c))
                return i;
        }
    }
    function patchVnode(oldVnode, vnode, insertedVnodeQueue, ownerArray, index, removeOnly) {
        if (oldVnode === vnode) {
            return;
        }
        if (isDef(vnode.elm) && isDef(ownerArray)) {
            // clone reused vnode
            vnode = ownerArray[index] = cloneVNode(vnode);
        }
        const elm = (vnode.elm = oldVnode.elm);
        if (isTrue(oldVnode.isAsyncPlaceholder)) {
            if (isDef(vnode.asyncFactory.resolved)) {
                hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
            }
            else {
                vnode.isAsyncPlaceholder = true;
            }
            return;
        }
        // reuse element for static trees.
        // note we only do this if the vnode is cloned -
        // if the new node is not cloned it means the render functions have been
        // reset by the hot-reload-api and we need to do a proper re-render.
        if (isTrue(vnode.isStatic) &&
            isTrue(oldVnode.isStatic) &&
            vnode.key === oldVnode.key &&
            (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))) {
            vnode.componentInstance = oldVnode.componentInstance;
            return;
        }
        let i;
        const data = vnode.data;
        if (isDef(data) && isDef((i = data.hook)) && isDef((i = i.prepatch))) {
            i(oldVnode, vnode);
        }
        const oldCh = oldVnode.children;
        const ch = vnode.children;
        if (isDef(data) && isPatchable(vnode)) {
            for (i = 0; i < cbs.update.length; ++i)
                cbs.update[i](oldVnode, vnode);
            if (isDef((i = data.hook)) && isDef((i = i.update)))
                i(oldVnode, vnode);
        }
        if (isUndef(vnode.text)) {
            if (isDef(oldCh) && isDef(ch)) {
                if (oldCh !== ch)
                    updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly);
            }
            else if (isDef(ch)) {
                {
                    checkDuplicateKeys(ch);
                }
                if (isDef(oldVnode.text))
                    nodeOps.setTextContent(elm, '');
                addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
            }
            else if (isDef(oldCh)) {
                removeVnodes(oldCh, 0, oldCh.length - 1);
            }
            else if (isDef(oldVnode.text)) {
                nodeOps.setTextContent(elm, '');
            }
        }
        else if (oldVnode.text !== vnode.text) {
            nodeOps.setTextContent(elm, vnode.text);
        }
        if (isDef(data)) {
            if (isDef((i = data.hook)) && isDef((i = i.postpatch)))
                i(oldVnode, vnode);
        }
    }
    function invokeInsertHook(vnode, queue, initial) {
        // delay insert hooks for component root nodes, invoke them after the
        // element is really inserted
        if (isTrue(initial) && isDef(vnode.parent)) {
            vnode.parent.data.pendingInsert = queue;
        }
        else {
            for (let i = 0; i < queue.length; ++i) {
                queue[i].data.hook.insert(queue[i]);
            }
        }
    }
    let hydrationBailed = false;
    // list of modules that can skip create hook during hydration because they
    // are already rendered on the client or has no need for initialization
    // Note: style is excluded because it relies on initial clone for future
    // deep updates (#7063).
    const isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
    // Note: this is a browser-only function so we can assume elms are DOM nodes.
    function hydrate(elm, vnode, insertedVnodeQueue, inVPre) {
        let i;
        const { tag, data, children } = vnode;
        inVPre = inVPre || (data && data.pre);
        vnode.elm = elm;
        if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
            vnode.isAsyncPlaceholder = true;
            return true;
        }
        // assert node match
        {
            if (!assertNodeMatch(elm, vnode, inVPre)) {
                return false;
            }
        }
        if (isDef(data)) {
            if (isDef((i = data.hook)) && isDef((i = i.init)))
                i(vnode, true /* hydrating */);
            if (isDef((i = vnode.componentInstance))) {
                // child component. it should have hydrated its own tree.
                initComponent(vnode, insertedVnodeQueue);
                return true;
            }
        }
        if (isDef(tag)) {
            if (isDef(children)) {
                // empty element, allow client to pick up and populate children
                if (!elm.hasChildNodes()) {
                    createChildren(vnode, children, insertedVnodeQueue);
                }
                else {
                    // v-html and domProps: innerHTML
                    if (isDef((i = data)) &&
                        isDef((i = i.domProps)) &&
                        isDef((i = i.innerHTML))) {
                        if (i !== elm.innerHTML) {
                            /* istanbul ignore if */
                            if (typeof console !== 'undefined' &&
                                !hydrationBailed) {
                                hydrationBailed = true;
                                console.warn('Parent: ', elm);
                                console.warn('server innerHTML: ', i);
                                console.warn('client innerHTML: ', elm.innerHTML);
                            }
                            return false;
                        }
                    }
                    else {
                        // iterate and compare children lists
                        let childrenMatch = true;
                        let childNode = elm.firstChild;
                        for (let i = 0; i < children.length; i++) {
                            if (!childNode ||
                                !hydrate(childNode, children[i], insertedVnodeQueue, inVPre)) {
                                childrenMatch = false;
                                break;
                            }
                            childNode = childNode.nextSibling;
                        }
                        // if childNode is not null, it means the actual childNodes list is
                        // longer than the virtual children list.
                        if (!childrenMatch || childNode) {
                            /* istanbul ignore if */
                            if (typeof console !== 'undefined' &&
                                !hydrationBailed) {
                                hydrationBailed = true;
                                console.warn('Parent: ', elm);
                                console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
                            }
                            return false;
                        }
                    }
                }
            }
            if (isDef(data)) {
                let fullInvoke = false;
                for (const key in data) {
                    if (!isRenderedModule(key)) {
                        fullInvoke = true;
                        invokeCreateHooks(vnode, insertedVnodeQueue);
                        break;
                    }
                }
                if (!fullInvoke && data['class']) {
                    // ensure collecting deps for deep class bindings for future updates
                    traverse(data['class']);
                }
            }
        }
        else if (elm.data !== vnode.text) {
            elm.data = vnode.text;
        }
        return true;
    }
    function assertNodeMatch(node, vnode, inVPre) {
        if (isDef(vnode.tag)) {
            return (vnode.tag.indexOf('vue-component') === 0 ||
                (!isUnknownElement(vnode, inVPre) &&
                    vnode.tag.toLowerCase() ===
                        (node.tagName && node.tagName.toLowerCase())));
        }
        else {
            return node.nodeType === (vnode.isComment ? 8 : 3);
        }
    }
    return function patch(oldVnode, vnode, hydrating, removeOnly) {
        if (isUndef(vnode)) {
            if (isDef(oldVnode))
                invokeDestroyHook(oldVnode);
            return;
        }
        let isInitialPatch = false;
        const insertedVnodeQueue = [];
        if (isUndef(oldVnode)) {
            // empty mount (likely as component), create new root element
            isInitialPatch = true;
            createElm(vnode, insertedVnodeQueue);
        }
        else {
            const isRealElement = isDef(oldVnode.nodeType);
            if (!isRealElement && sameVnode(oldVnode, vnode)) {
                // patch existing root node
                patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
            }
            else {
                if (isRealElement) {
                    // mounting to a real element
                    // check if this is server-rendered content and if we can perform
                    // a successful hydration.
                    if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
                        oldVnode.removeAttribute(SSR_ATTR);
                        hydrating = true;
                    }
                    if (isTrue(hydrating)) {
                        if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
                            invokeInsertHook(vnode, insertedVnodeQueue, true);
                            return oldVnode;
                        }
                        else {
                            warn('The client-side rendered virtual DOM tree is not matching ' +
                                'server-rendered content. This is likely caused by incorrect ' +
                                'HTML markup, for example nesting block-level elements inside ' +
                                '<p>, or missing <tbody>. Bailing hydration and performing ' +
                                'full client-side render.');
                        }
                    }
                    // either not server-rendered, or hydration failed.
                    // create an empty node and replace it
                    oldVnode = emptyNodeAt(oldVnode);
                }
                // replacing existing element
                const oldElm = oldVnode.elm;
                const parentElm = nodeOps.parentNode(oldElm);
                // create new node
                createElm(vnode, insertedVnodeQueue, 
                // extremely rare edge case: do not insert if old element is in a
                // leaving transition. Only happens when combining transition +
                // keep-alive + HOCs. (#4590)
                oldElm._leaveCb ? null : parentElm, nodeOps.nextSibling(oldElm));
                // update parent placeholder node element, recursively
                if (isDef(vnode.parent)) {
                    let ancestor = vnode.parent;
                    const patchable = isPatchable(vnode);
                    while (ancestor) {
                        for (let i = 0; i < cbs.destroy.length; ++i) {
                            cbs.destroy[i](ancestor);
                        }
                        ancestor.elm = vnode.elm;
                        if (patchable) {
                            for (let i = 0; i < cbs.create.length; ++i) {
                                cbs.create[i](emptyNode, ancestor);
                            }
                            // #6513
                            // invoke insert hooks that may have been merged by create hooks.
                            // e.g. for directives that uses the "inserted" hook.
                            const insert = ancestor.data.hook.insert;
                            if (insert.merged) {
                                // start at index 1 to avoid re-invoking component mounted hook
                                for (let i = 1; i < insert.fns.length; i++) {
                                    insert.fns[i]();
                                }
                            }
                        }
                        else {
                            registerRef(ancestor);
                        }
                        ancestor = ancestor.parent;
                    }
                }
                // destroy old node
                if (isDef(parentElm)) {
                    removeVnodes([oldVnode], 0, 0);
                }
                else if (isDef(oldVnode.tag)) {
                    invokeDestroyHook(oldVnode);
                }
            }
        }
        invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
        return vnode.elm;
    };
}

var directives = {
    create: updateDirectives,
    update: updateDirectives,
    destroy: function unbindDirectives(vnode) {
        // @ts-expect-error emptyNode is not VNodeWithData
        updateDirectives(vnode, emptyNode);
    }
};
function updateDirectives(oldVnode, vnode) {
    if (oldVnode.data.directives || vnode.data.directives) {
        _update(oldVnode, vnode);
    }
}
function _update(oldVnode, vnode) {
    const isCreate = oldVnode === emptyNode;
    const isDestroy = vnode === emptyNode;
    const oldDirs = normalizeDirectives(oldVnode.data.directives, oldVnode.context);
    const newDirs = normalizeDirectives(vnode.data.directives, vnode.context);
    const dirsWithInsert = [];
    const dirsWithPostpatch = [];
    let key, oldDir, dir;
    for (key in newDirs) {
        oldDir = oldDirs[key];
        dir = newDirs[key];
        if (!oldDir) {
            // new directive, bind
            callHook(dir, 'bind', vnode, oldVnode);
            if (dir.def && dir.def.inserted) {
                dirsWithInsert.push(dir);
            }
        }
        else {
            // existing directive, update
            dir.oldValue = oldDir.value;
            dir.oldArg = oldDir.arg;
            callHook(dir, 'update', vnode, oldVnode);
            if (dir.def && dir.def.componentUpdated) {
                dirsWithPostpatch.push(dir);
            }
        }
    }
    if (dirsWithInsert.length) {
        const callInsert = () => {
            for (let i = 0; i < dirsWithInsert.length; i++) {
                callHook(dirsWithInsert[i], 'inserted', vnode, oldVnode);
            }
        };
        if (isCreate) {
            mergeVNodeHook(vnode, 'insert', callInsert);
        }
        else {
            callInsert();
        }
    }
    if (dirsWithPostpatch.length) {
        mergeVNodeHook(vnode, 'postpatch', () => {
            for (let i = 0; i < dirsWithPostpatch.length; i++) {
                callHook(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
            }
        });
    }
    if (!isCreate) {
        for (key in oldDirs) {
            if (!newDirs[key]) {
                // no longer present, unbind
                callHook(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
            }
        }
    }
}
const emptyModifiers = Object.create(null);
function normalizeDirectives(dirs, vm) {
    const res = Object.create(null);
    if (!dirs) {
        // $flow-disable-line
        return res;
    }
    let i, dir;
    for (i = 0; i < dirs.length; i++) {
        dir = dirs[i];
        if (!dir.modifiers) {
            // $flow-disable-line
            dir.modifiers = emptyModifiers;
        }
        res[getRawDirName(dir)] = dir;
        if (vm._setupState && vm._setupState.__sfc) {
            const setupDef = dir.def || resolveAsset(vm, '_setupState', 'v-' + dir.name);
            if (typeof setupDef === 'function') {
                dir.def = {
                    bind: setupDef,
                    update: setupDef,
                };
            }
            else {
                dir.def = setupDef;
            }
        }
        dir.def = dir.def || resolveAsset(vm.$options, 'directives', dir.name, true);
    }
    // $flow-disable-line
    return res;
}
function getRawDirName(dir) {
    return (dir.rawName || `${dir.name}.${Object.keys(dir.modifiers || {}).join('.')}`);
}
function callHook(dir, hook, vnode, oldVnode, isDestroy) {
    const fn = dir.def && dir.def[hook];
    if (fn) {
        try {
            fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
        }
        catch (e) {
            handleError(e, vnode.context, `directive ${dir.name} ${hook} hook`);
        }
    }
}

var baseModules = [ref, directives];

function updateAttrs(oldVnode, vnode) {
    const opts = vnode.componentOptions;
    if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
        return;
    }
    if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
        return;
    }
    let key, cur, old;
    const elm = vnode.elm;
    const oldAttrs = oldVnode.data.attrs || {};
    let attrs = vnode.data.attrs || {};
    // clone observed objects, as the user probably wants to mutate it
    if (isDef(attrs.__ob__) || isTrue(attrs._v_attr_proxy)) {
        attrs = vnode.data.attrs = extend({}, attrs);
    }
    for (key in attrs) {
        cur = attrs[key];
        old = oldAttrs[key];
        if (old !== cur) {
            setAttr(elm, key, cur, vnode.data.pre);
        }
    }
    // #4391: in IE9, setting type can reset value for input[type=radio]
    // #6666: IE/Edge forces progress value down to 1 before setting a max
    /* istanbul ignore if */
    if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
        setAttr(elm, 'value', attrs.value);
    }
    for (key in oldAttrs) {
        if (isUndef(attrs[key])) {
            if (isXlink(key)) {
                elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
            }
            else if (!isEnumeratedAttr(key)) {
                elm.removeAttribute(key);
            }
        }
    }
}
function setAttr(el, key, value, isInPre) {
    if (isInPre || el.tagName.indexOf('-') > -1) {
        baseSetAttr(el, key, value);
    }
    else if (isBooleanAttr(key)) {
        // set attribute for blank value
        // e.g. <option disabled>Select one</option>
        if (isFalsyAttrValue(value)) {
            el.removeAttribute(key);
        }
        else {
            // technically allowfullscreen is a boolean attribute for <iframe>,
            // but Flash expects a value of "true" when used on <embed> tag
            value = key === 'allowfullscreen' && el.tagName === 'EMBED' ? 'true' : key;
            el.setAttribute(key, value);
        }
    }
    else if (isEnumeratedAttr(key)) {
        el.setAttribute(key, convertEnumeratedValue(key, value));
    }
    else if (isXlink(key)) {
        if (isFalsyAttrValue(value)) {
            el.removeAttributeNS(xlinkNS, getXlinkProp(key));
        }
        else {
            el.setAttributeNS(xlinkNS, key, value);
        }
    }
    else {
        baseSetAttr(el, key, value);
    }
}
function baseSetAttr(el, key, value) {
    if (isFalsyAttrValue(value)) {
        el.removeAttribute(key);
    }
    else {
        // #7138: IE10 & 11 fires input event when setting placeholder on
        // <textarea>... block the first input event and remove the blocker
        // immediately.
        /* istanbul ignore if */
        if (isIE &&
            !isIE9 &&
            el.tagName === 'TEXTAREA' &&
            key === 'placeholder' &&
            value !== '' &&
            !el.__ieph) {
            const blocker = e => {
                e.stopImmediatePropagation();
                el.removeEventListener('input', blocker);
            };
            el.addEventListener('input', blocker);
            // $flow-disable-line
            el.__ieph = true; /* IE placeholder patched */
        }
        el.setAttribute(key, value);
    }
}
var attrs = {
    create: updateAttrs,
    update: updateAttrs
};

function updateClass(oldVnode, vnode) {
    const el = vnode.elm;
    const data = vnode.data;
    const oldData = oldVnode.data;
    if (isUndef(data.staticClass) &&
        isUndef(data.class) &&
        (isUndef(oldData) ||
            (isUndef(oldData.staticClass) && isUndef(oldData.class)))) {
        return;
    }
    let cls = genClassForVnode(vnode);
    // handle transition classes
    const transitionClass = el._transitionClasses;
    if (isDef(transitionClass)) {
        cls = concat(cls, stringifyClass(transitionClass));
    }
    // set the class
    if (cls !== el._prevClass) {
        el.setAttribute('class', cls);
        el._prevClass = cls;
    }
}
var klass = {
    create: updateClass,
    update: updateClass
};

// in some cases, the event used has to be determined at runtime
// so we used some reserved tokens during compile.
const RANGE_TOKEN = '__r';
const CHECKBOX_RADIO_TOKEN = '__c';

// normalize v-model event tokens that can only be determined at runtime.
// it's important to place the event as the first in the array because
// the whole point is ensuring the v-model callback gets called before
// user-attached handlers.
function normalizeEvents(on) {
    /* istanbul ignore if */
    if (isDef(on[RANGE_TOKEN])) {
        // IE input[type=range] only supports `change` event
        const event = isIE ? 'change' : 'input';
        on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
        delete on[RANGE_TOKEN];
    }
    // This was originally intended to fix #4521 but no longer necessary
    // after 2.5. Keeping it for backwards compat with generated code from < 2.4
    /* istanbul ignore if */
    if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
        on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
        delete on[CHECKBOX_RADIO_TOKEN];
    }
}
let target;
function createOnceHandler(event, handler, capture) {
    const _target = target; // save current target element in closure
    return function onceHandler() {
        const res = handler.apply(null, arguments);
        if (res !== null) {
            remove(event, onceHandler, capture, _target);
        }
    };
}
// #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
// implementation and does not fire microtasks in between event propagation, so
// safe to exclude.
const useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);
function add(name, handler, capture, passive) {
    // async edge case #6566: inner click event triggers patch, event handler
    // attached to outer element during patch, and triggered again. This
    // happens because browsers fire microtask ticks between event propagation.
    // the solution is simple: we save the timestamp when a handler is attached,
    // and the handler would only fire if the event passed to it was fired
    // AFTER it was attached.
    if (useMicrotaskFix) {
        const attachedTimestamp = currentFlushTimestamp;
        const original = handler;
        //@ts-expect-error
        handler = original._wrapper = function (e) {
            if (
            // no bubbling, should always fire.
            // this is just a safety net in case event.timeStamp is unreliable in
            // certain weird environments...
            e.target === e.currentTarget ||
                // event is fired after handler attachment
                e.timeStamp >= attachedTimestamp ||
                // bail for environments that have buggy event.timeStamp implementations
                // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
                // #9681 QtWebEngine event.timeStamp is negative value
                e.timeStamp <= 0 ||
                // #9448 bail if event is fired in another document in a multi-page
                // electron/nw.js app, since event.timeStamp will be using a different
                // starting reference
                e.target.ownerDocument !== document) {
                return original.apply(this, arguments);
            }
        };
    }
    target.addEventListener(name, handler, supportsPassive ? { capture, passive } : capture);
}
function remove(name, handler, capture, _target) {
    (_target || target).removeEventListener(name, 
    //@ts-expect-error
    handler._wrapper || handler, capture);
}
function updateDOMListeners(oldVnode, vnode) {
    if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
        return;
    }
    const on = vnode.data.on || {};
    const oldOn = oldVnode.data.on || {};
    // vnode is empty when removing all listeners,
    // and use old vnode dom element
    target = vnode.elm || oldVnode.elm;
    normalizeEvents(on);
    updateListeners(on, oldOn, add, remove, createOnceHandler, vnode.context);
    target = undefined;
}
var events = {
    create: updateDOMListeners,
    update: updateDOMListeners,
    // @ts-expect-error emptyNode has actually data
    destroy: (vnode) => updateDOMListeners(vnode, emptyNode)
};

let svgContainer;
function updateDOMProps(oldVnode, vnode) {
    if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
        return;
    }
    let key, cur;
    const elm = vnode.elm;
    const oldProps = oldVnode.data.domProps || {};
    let props = vnode.data.domProps || {};
    // clone observed objects, as the user probably wants to mutate it
    if (isDef(props.__ob__) || isTrue(props._v_attr_proxy)) {
        props = vnode.data.domProps = extend({}, props);
    }
    for (key in oldProps) {
        if (!(key in props)) {
            elm[key] = '';
        }
    }
    for (key in props) {
        cur = props[key];
        // ignore children if the node has textContent or innerHTML,
        // as these will throw away existing DOM nodes and cause removal errors
        // on subsequent patches (#3360)
        if (key === 'textContent' || key === 'innerHTML') {
            if (vnode.children)
                vnode.children.length = 0;
            if (cur === oldProps[key])
                continue;
            // #6601 work around Chrome version <= 55 bug where single textNode
            // replaced by innerHTML/textContent retains its parentNode property
            if (elm.childNodes.length === 1) {
                elm.removeChild(elm.childNodes[0]);
            }
        }
        if (key === 'value' && elm.tagName !== 'PROGRESS') {
            // store value as _value as well since
            // non-string values will be stringified
            elm._value = cur;
            // avoid resetting cursor position when value is the same
            const strCur = isUndef(cur) ? '' : String(cur);
            if (shouldUpdateValue(elm, strCur)) {
                elm.value = strCur;
            }
        }
        else if (key === 'innerHTML' &&
            isSVG(elm.tagName) &&
            isUndef(elm.innerHTML)) {
            // IE doesn't support innerHTML for SVG elements
            svgContainer = svgContainer || document.createElement('div');
            svgContainer.innerHTML = `<svg>${cur}</svg>`;
            const svg = svgContainer.firstChild;
            while (elm.firstChild) {
                elm.removeChild(elm.firstChild);
            }
            while (svg.firstChild) {
                elm.appendChild(svg.firstChild);
            }
        }
        else if (
        // skip the update if old and new VDOM state is the same.
        // `value` is handled separately because the DOM value may be temporarily
        // out of sync with VDOM state due to focus, composition and modifiers.
        // This  #4521 by skipping the unnecessary `checked` update.
        cur !== oldProps[key]) {
            // some property updates can throw
            // e.g. `value` on <progress> w/ non-finite value
            try {
                elm[key] = cur;
            }
            catch (e) { }
        }
    }
}
function shouldUpdateValue(elm, checkVal) {
    return (
    //@ts-expect-error
    !elm.composing &&
        (elm.tagName === 'OPTION' ||
            isNotInFocusAndDirty(elm, checkVal) ||
            isDirtyWithModifiers(elm, checkVal)));
}
function isNotInFocusAndDirty(elm, checkVal) {
    // return true when textbox (.number and .trim) loses focus and its value is
    // not equal to the updated value
    let notInFocus = true;
    // #6157
    // work around IE bug when accessing document.activeElement in an iframe
    try {
        notInFocus = document.activeElement !== elm;
    }
    catch (e) { }
    return notInFocus && elm.value !== checkVal;
}
function isDirtyWithModifiers(elm, newVal) {
    const value = elm.value;
    const modifiers = elm._vModifiers; // injected by v-model runtime
    if (isDef(modifiers)) {
        if (modifiers.number) {
            return toNumber(value) !== toNumber(newVal);
        }
        if (modifiers.trim) {
            return value.trim() !== newVal.trim();
        }
    }
    return value !== newVal;
}
var domProps = {
    create: updateDOMProps,
    update: updateDOMProps
};

const parseStyleText = cached(function (cssText) {
    const res = {};
    const listDelimiter = /;(?![^(]*\))/g;
    const propertyDelimiter = /:(.+)/;
    cssText.split(listDelimiter).forEach(function (item) {
        if (item) {
            const tmp = item.split(propertyDelimiter);
            tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
        }
    });
    return res;
});
// merge static and dynamic style data on the same vnode
function normalizeStyleData(data) {
    const style = normalizeStyleBinding(data.style);
    // static style is pre-processed into an object during compilation
    // and is always a fresh object, so it's safe to merge into it
    return data.staticStyle ? extend(data.staticStyle, style) : style;
}
// normalize possible array / string values into Object
function normalizeStyleBinding(bindingStyle) {
    if (Array.isArray(bindingStyle)) {
        return toObject(bindingStyle);
    }
    if (typeof bindingStyle === 'string') {
        return parseStyleText(bindingStyle);
    }
    return bindingStyle;
}
/**
 * parent component style should be after child's
 * so that parent component's style could override it
 */
function getStyle(vnode, checkChild) {
    const res = {};
    let styleData;
    if (checkChild) {
        let childNode = vnode;
        while (childNode.componentInstance) {
            childNode = childNode.componentInstance._vnode;
            if (childNode &&
                childNode.data &&
                (styleData = normalizeStyleData(childNode.data))) {
                extend(res, styleData);
            }
        }
    }
    if ((styleData = normalizeStyleData(vnode.data))) {
        extend(res, styleData);
    }
    let parentNode = vnode;
    // @ts-expect-error parentNode.parent not VNodeWithData
    while ((parentNode = parentNode.parent)) {
        if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
            extend(res, styleData);
        }
    }
    return res;
}

const cssVarRE = /^--/;
const importantRE = /\s*!important$/;
const setProp = (el, name, val) => {
    /* istanbul ignore if */
    if (cssVarRE.test(name)) {
        el.style.setProperty(name, val);
    }
    else if (importantRE.test(val)) {
        el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
    }
    else {
        const normalizedName = normalize(name);
        if (Array.isArray(val)) {
            // Support values array created by autoprefixer, e.g.
            // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
            // Set them one by one, and the browser will only set those it can recognize
            for (let i = 0, len = val.length; i < len; i++) {
                el.style[normalizedName] = val[i];
            }
        }
        else {
            el.style[normalizedName] = val;
        }
    }
};
const vendorNames = ['Webkit', 'Moz', 'ms'];
let emptyStyle;
const normalize = cached(function (prop) {
    emptyStyle = emptyStyle || document.createElement('div').style;
    prop = camelize(prop);
    if (prop !== 'filter' && prop in emptyStyle) {
        return prop;
    }
    const capName = prop.charAt(0).toUpperCase() + prop.slice(1);
    for (let i = 0; i < vendorNames.length; i++) {
        const name = vendorNames[i] + capName;
        if (name in emptyStyle) {
            return name;
        }
    }
});
function updateStyle(oldVnode, vnode) {
    const data = vnode.data;
    const oldData = oldVnode.data;
    if (isUndef(data.staticStyle) &&
        isUndef(data.style) &&
        isUndef(oldData.staticStyle) &&
        isUndef(oldData.style)) {
        return;
    }
    let cur, name;
    const el = vnode.elm;
    const oldStaticStyle = oldData.staticStyle;
    const oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
    // if static style exists, stylebinding already merged into it when doing normalizeStyleData
    const oldStyle = oldStaticStyle || oldStyleBinding;
    const style = normalizeStyleBinding(vnode.data.style) || {};
    // store normalized style under a different key for next diff
    // make sure to clone it if it's reactive, since the user likely wants
    // to mutate it.
    vnode.data.normalizedStyle = isDef(style.__ob__) ? extend({}, style) : style;
    const newStyle = getStyle(vnode, true);
    for (name in oldStyle) {
        if (isUndef(newStyle[name])) {
            setProp(el, name, '');
        }
    }
    for (name in newStyle) {
        cur = newStyle[name];
        if (cur !== oldStyle[name]) {
            // ie9 setting to null has no effect, must use empty string
            setProp(el, name, cur == null ? '' : cur);
        }
    }
}
var style = {
    create: updateStyle,
    update: updateStyle
};

const whitespaceRE = /\s+/;
/**
 * Add class with compatibility for SVG since classList is not supported on
 * SVG elements in IE
 */
function addClass(el, cls) {
    /* istanbul ignore if */
    if (!cls || !(cls = cls.trim())) {
        return;
    }
    /* istanbul ignore else */
    if (el.classList) {
        if (cls.indexOf(' ') > -1) {
            cls.split(whitespaceRE).forEach(c => el.classList.add(c));
        }
        else {
            el.classList.add(cls);
        }
    }
    else {
        const cur = ` ${el.getAttribute('class') || ''} `;
        if (cur.indexOf(' ' + cls + ' ') < 0) {
            el.setAttribute('class', (cur + cls).trim());
        }
    }
}
/**
 * Remove class with compatibility for SVG since classList is not supported on
 * SVG elements in IE
 */
function removeClass(el, cls) {
    /* istanbul ignore if */
    if (!cls || !(cls = cls.trim())) {
        return;
    }
    /* istanbul ignore else */
    if (el.classList) {
        if (cls.indexOf(' ') > -1) {
            cls.split(whitespaceRE).forEach(c => el.classList.remove(c));
        }
        else {
            el.classList.remove(cls);
        }
        if (!el.classList.length) {
            el.removeAttribute('class');
        }
    }
    else {
        let cur = ` ${el.getAttribute('class') || ''} `;
        const tar = ' ' + cls + ' ';
        while (cur.indexOf(tar) >= 0) {
            cur = cur.replace(tar, ' ');
        }
        cur = cur.trim();
        if (cur) {
            el.setAttribute('class', cur);
        }
        else {
            el.removeAttribute('class');
        }
    }
}

function resolveTransition(def) {
    if (!def) {
        return;
    }
    /* istanbul ignore else */
    if (typeof def === 'object') {
        const res = {};
        if (def.css !== false) {
            extend(res, autoCssTransition(def.name || 'v'));
        }
        extend(res, def);
        return res;
    }
    else if (typeof def === 'string') {
        return autoCssTransition(def);
    }
}
const autoCssTransition = cached(name => {
    return {
        enterClass: `${name}-enter`,
        enterToClass: `${name}-enter-to`,
        enterActiveClass: `${name}-enter-active`,
        leaveClass: `${name}-leave`,
        leaveToClass: `${name}-leave-to`,
        leaveActiveClass: `${name}-leave-active`
    };
});
const hasTransition = inBrowser && !isIE9;
const TRANSITION = 'transition';
const ANIMATION = 'animation';
// Transition property/event sniffing
let transitionProp = 'transition';
let transitionEndEvent = 'transitionend';
let animationProp = 'animation';
let animationEndEvent = 'animationend';
if (hasTransition) {
    /* istanbul ignore if */
    if (window.ontransitionend === undefined &&
        window.onwebkittransitionend !== undefined) {
        transitionProp = 'WebkitTransition';
        transitionEndEvent = 'webkitTransitionEnd';
    }
    if (window.onanimationend === undefined &&
        window.onwebkitanimationend !== undefined) {
        animationProp = 'WebkitAnimation';
        animationEndEvent = 'webkitAnimationEnd';
    }
}
// binding to window is necessary to make hot reload work in IE in strict mode
const raf = inBrowser
    ? window.requestAnimationFrame
        ? window.requestAnimationFrame.bind(window)
        : setTimeout
    : /* istanbul ignore next */ /* istanbul ignore next */ fn => fn();
function nextFrame(fn) {
    raf(() => {
        // @ts-expect-error
        raf(fn);
    });
}
function addTransitionClass(el, cls) {
    const transitionClasses = el._transitionClasses || (el._transitionClasses = []);
    if (transitionClasses.indexOf(cls) < 0) {
        transitionClasses.push(cls);
        addClass(el, cls);
    }
}
function removeTransitionClass(el, cls) {
    if (el._transitionClasses) {
        remove$2(el._transitionClasses, cls);
    }
    removeClass(el, cls);
}
function whenTransitionEnds(el, expectedType, cb) {
    const { type, timeout, propCount } = getTransitionInfo(el, expectedType);
    if (!type)
        return cb();
    const event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
    let ended = 0;
    const end = () => {
        el.removeEventListener(event, onEnd);
        cb();
    };
    const onEnd = e => {
        if (e.target === el) {
            if (++ended >= propCount) {
                end();
            }
        }
    };
    setTimeout(() => {
        if (ended < propCount) {
            end();
        }
    }, timeout + 1);
    el.addEventListener(event, onEnd);
}
const transformRE = /\b(transform|all)(,|$)/;
function getTransitionInfo(el, expectedType) {
    const styles = window.getComputedStyle(el);
    // JSDOM may return undefined for transition properties
    const transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
    const transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
    const transitionTimeout = getTimeout(transitionDelays, transitionDurations);
    const animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
    const animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
    const animationTimeout = getTimeout(animationDelays, animationDurations);
    let type;
    let timeout = 0;
    let propCount = 0;
    /* istanbul ignore if */
    if (expectedType === TRANSITION) {
        if (transitionTimeout > 0) {
            type = TRANSITION;
            timeout = transitionTimeout;
            propCount = transitionDurations.length;
        }
    }
    else if (expectedType === ANIMATION) {
        if (animationTimeout > 0) {
            type = ANIMATION;
            timeout = animationTimeout;
            propCount = animationDurations.length;
        }
    }
    else {
        timeout = Math.max(transitionTimeout, animationTimeout);
        type =
            timeout > 0
                ? transitionTimeout > animationTimeout
                    ? TRANSITION
                    : ANIMATION
                : null;
        propCount = type
            ? type === TRANSITION
                ? transitionDurations.length
                : animationDurations.length
            : 0;
    }
    const hasTransform = type === TRANSITION && transformRE.test(styles[transitionProp + 'Property']);
    return {
        type,
        timeout,
        propCount,
        hasTransform
    };
}
function getTimeout(delays, durations) {
    /* istanbul ignore next */
    while (delays.length < durations.length) {
        delays = delays.concat(delays);
    }
    return Math.max.apply(null, durations.map((d, i) => {
        return toMs(d) + toMs(delays[i]);
    }));
}
// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
// in a locale-dependent way, using a comma instead of a dot.
// If comma is not replaced with a dot, the input will be rounded down (i.e. acting
// as a floor function) causing unexpected behaviors
function toMs(s) {
    return Number(s.slice(0, -1).replace(',', '.')) * 1000;
}

function enter(vnode, toggleDisplay) {
    const el = vnode.elm;
    // call leave callback now
    if (isDef(el._leaveCb)) {
        el._leaveCb.cancelled = true;
        el._leaveCb();
    }
    const data = resolveTransition(vnode.data.transition);
    if (isUndef(data)) {
        return;
    }
    /* istanbul ignore if */
    if (isDef(el._enterCb) || el.nodeType !== 1) {
        return;
    }
    const { css, type, enterClass, enterToClass, enterActiveClass, appearClass, appearToClass, appearActiveClass, beforeEnter, enter, afterEnter, enterCancelled, beforeAppear, appear, afterAppear, appearCancelled, duration } = data;
    // activeInstance will always be the <transition> component managing this
    // transition. One edge case to check is when the <transition> is placed
    // as the root node of a child component. In that case we need to check
    // <transition>'s parent for appear check.
    let context = activeInstance;
    let transitionNode = activeInstance.$vnode;
    while (transitionNode && transitionNode.parent) {
        context = transitionNode.context;
        transitionNode = transitionNode.parent;
    }
    const isAppear = !context._isMounted || !vnode.isRootInsert;
    if (isAppear && !appear && appear !== '') {
        return;
    }
    const startClass = isAppear && appearClass ? appearClass : enterClass;
    const activeClass = isAppear && appearActiveClass ? appearActiveClass : enterActiveClass;
    const toClass = isAppear && appearToClass ? appearToClass : enterToClass;
    const beforeEnterHook = isAppear ? beforeAppear || beforeEnter : beforeEnter;
    const enterHook = isAppear ? (isFunction(appear) ? appear : enter) : enter;
    const afterEnterHook = isAppear ? afterAppear || afterEnter : afterEnter;
    const enterCancelledHook = isAppear
        ? appearCancelled || enterCancelled
        : enterCancelled;
    const explicitEnterDuration = toNumber(isObject(duration) ? duration.enter : duration);
    if (explicitEnterDuration != null) {
        checkDuration(explicitEnterDuration, 'enter', vnode);
    }
    const expectsCSS = css !== false && !isIE9;
    const userWantsControl = getHookArgumentsLength(enterHook);
    const cb = (el._enterCb = once(() => {
        if (expectsCSS) {
            removeTransitionClass(el, toClass);
            removeTransitionClass(el, activeClass);
        }
        // @ts-expect-error
        if (cb.cancelled) {
            if (expectsCSS) {
                removeTransitionClass(el, startClass);
            }
            enterCancelledHook && enterCancelledHook(el);
        }
        else {
            afterEnterHook && afterEnterHook(el);
        }
        el._enterCb = null;
    }));
    if (!vnode.data.show) {
        // remove pending leave element on enter by injecting an insert hook
        mergeVNodeHook(vnode, 'insert', () => {
            const parent = el.parentNode;
            const pendingNode = parent && parent._pending && parent._pending[vnode.key];
            if (pendingNode &&
                pendingNode.tag === vnode.tag &&
                pendingNode.elm._leaveCb) {
                pendingNode.elm._leaveCb();
            }
            enterHook && enterHook(el, cb);
        });
    }
    // start enter transition
    beforeEnterHook && beforeEnterHook(el);
    if (expectsCSS) {
        addTransitionClass(el, startClass);
        addTransitionClass(el, activeClass);
        nextFrame(() => {
            removeTransitionClass(el, startClass);
            // @ts-expect-error
            if (!cb.cancelled) {
                addTransitionClass(el, toClass);
                if (!userWantsControl) {
                    if (isValidDuration(explicitEnterDuration)) {
                        setTimeout(cb, explicitEnterDuration);
                    }
                    else {
                        whenTransitionEnds(el, type, cb);
                    }
                }
            }
        });
    }
    if (vnode.data.show) {
        toggleDisplay && toggleDisplay();
        enterHook && enterHook(el, cb);
    }
    if (!expectsCSS && !userWantsControl) {
        cb();
    }
}
function leave(vnode, rm) {
    const el = vnode.elm;
    // call enter callback now
    if (isDef(el._enterCb)) {
        el._enterCb.cancelled = true;
        el._enterCb();
    }
    const data = resolveTransition(vnode.data.transition);
    if (isUndef(data) || el.nodeType !== 1) {
        return rm();
    }
    /* istanbul ignore if */
    if (isDef(el._leaveCb)) {
        return;
    }
    const { css, type, leaveClass, leaveToClass, leaveActiveClass, beforeLeave, leave, afterLeave, leaveCancelled, delayLeave, duration } = data;
    const expectsCSS = css !== false && !isIE9;
    const userWantsControl = getHookArgumentsLength(leave);
    const explicitLeaveDuration = toNumber(isObject(duration) ? duration.leave : duration);
    if (isDef(explicitLeaveDuration)) {
        checkDuration(explicitLeaveDuration, 'leave', vnode);
    }
    const cb = (el._leaveCb = once(() => {
        if (el.parentNode && el.parentNode._pending) {
            el.parentNode._pending[vnode.key] = null;
        }
        if (expectsCSS) {
            removeTransitionClass(el, leaveToClass);
            removeTransitionClass(el, leaveActiveClass);
        }
        // @ts-expect-error
        if (cb.cancelled) {
            if (expectsCSS) {
                removeTransitionClass(el, leaveClass);
            }
            leaveCancelled && leaveCancelled(el);
        }
        else {
            rm();
            afterLeave && afterLeave(el);
        }
        el._leaveCb = null;
    }));
    if (delayLeave) {
        delayLeave(performLeave);
    }
    else {
        performLeave();
    }
    function performLeave() {
        // the delayed leave may have already been cancelled
        // @ts-expect-error
        if (cb.cancelled) {
            return;
        }
        // record leaving element
        if (!vnode.data.show && el.parentNode) {
            (el.parentNode._pending || (el.parentNode._pending = {}))[vnode.key] =
                vnode;
        }
        beforeLeave && beforeLeave(el);
        if (expectsCSS) {
            addTransitionClass(el, leaveClass);
            addTransitionClass(el, leaveActiveClass);
            nextFrame(() => {
                removeTransitionClass(el, leaveClass);
                // @ts-expect-error
                if (!cb.cancelled) {
                    addTransitionClass(el, leaveToClass);
                    if (!userWantsControl) {
                        if (isValidDuration(explicitLeaveDuration)) {
                            setTimeout(cb, explicitLeaveDuration);
                        }
                        else {
                            whenTransitionEnds(el, type, cb);
                        }
                    }
                }
            });
        }
        leave && leave(el, cb);
        if (!expectsCSS && !userWantsControl) {
            cb();
        }
    }
}
// only used in dev mode
function checkDuration(val, name, vnode) {
    if (typeof val !== 'number') {
        warn(`<transition> explicit ${name} duration is not a valid number - ` +
            `got ${JSON.stringify(val)}.`, vnode.context);
    }
    else if (isNaN(val)) {
        warn(`<transition> explicit ${name} duration is NaN - ` +
            'the duration expression might be incorrect.', vnode.context);
    }
}
function isValidDuration(val) {
    return typeof val === 'number' && !isNaN(val);
}
/**
 * Normalize a transition hook's argument length. The hook may be:
 * - a merged hook (invoker) with the original in .fns
 * - a wrapped component method (check ._length)
 * - a plain function (.length)
 */
function getHookArgumentsLength(fn) {
    if (isUndef(fn)) {
        return false;
    }
    // @ts-expect-error
    const invokerFns = fn.fns;
    if (isDef(invokerFns)) {
        // invoker
        return getHookArgumentsLength(Array.isArray(invokerFns) ? invokerFns[0] : invokerFns);
    }
    else {
        // @ts-expect-error
        return (fn._length || fn.length) > 1;
    }
}
function _enter(_, vnode) {
    if (vnode.data.show !== true) {
        enter(vnode);
    }
}
var transition = inBrowser
    ? {
        create: _enter,
        activate: _enter,
        remove(vnode, rm) {
            /* istanbul ignore else */
            if (vnode.data.show !== true) {
                // @ts-expect-error
                leave(vnode, rm);
            }
            else {
                rm();
            }
        }
    }
    : {};

var platformModules = [attrs, klass, events, domProps, style, transition];

// the directive module should be applied last, after all
// built-in modules have been applied.
const modules = platformModules.concat(baseModules);
const patch = createPatchFunction({ nodeOps, modules });

/**
 * Not type checking this file because flow doesn't like attaching
 * properties to Elements.
 */
/* istanbul ignore if */
if (isIE9) {
    // http://www.matts411.com/post/internet-explorer-9-oninput/
    document.addEventListener('selectionchange', () => {
        const el = document.activeElement;
        // @ts-expect-error
        if (el && el.vmodel) {
            trigger(el, 'input');
        }
    });
}
const directive = {
    inserted(el, binding, vnode, oldVnode) {
        if (vnode.tag === 'select') {
            // #6903
            if (oldVnode.elm && !oldVnode.elm._vOptions) {
                mergeVNodeHook(vnode, 'postpatch', () => {
                    directive.componentUpdated(el, binding, vnode);
                });
            }
            else {
                setSelected(el, binding, vnode.context);
            }
            el._vOptions = [].map.call(el.options, getValue);
        }
        else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
            el._vModifiers = binding.modifiers;
            if (!binding.modifiers.lazy) {
                el.addEventListener('compositionstart', onCompositionStart);
                el.addEventListener('compositionend', onCompositionEnd);
                // Safari < 10.2 & UIWebView doesn't fire compositionend when
                // switching focus before confirming composition choice
                // this also fixes the issue where some browsers e.g. iOS Chrome
                // fires "change" instead of "input" on autocomplete.
                el.addEventListener('change', onCompositionEnd);
                /* istanbul ignore if */
                if (isIE9) {
                    el.vmodel = true;
                }
            }
        }
    },
    componentUpdated(el, binding, vnode) {
        if (vnode.tag === 'select') {
            setSelected(el, binding, vnode.context);
            // in case the options rendered by v-for have changed,
            // it's possible that the value is out-of-sync with the rendered options.
            // detect such cases and filter out values that no longer has a matching
            // option in the DOM.
            const prevOptions = el._vOptions;
            const curOptions = (el._vOptions = [].map.call(el.options, getValue));
            if (curOptions.some((o, i) => !looseEqual(o, prevOptions[i]))) {
                // trigger change event if
                // no matching option found for at least one value
                const needReset = el.multiple
                    ? binding.value.some(v => hasNoMatchingOption(v, curOptions))
                    : binding.value !== binding.oldValue &&
                        hasNoMatchingOption(binding.value, curOptions);
                if (needReset) {
                    trigger(el, 'change');
                }
            }
        }
    }
};
function setSelected(el, binding, vm) {
    actuallySetSelected(el, binding, vm);
    /* istanbul ignore if */
    if (isIE || isEdge) {
        setTimeout(() => {
            actuallySetSelected(el, binding, vm);
        }, 0);
    }
}
function actuallySetSelected(el, binding, vm) {
    const value = binding.value;
    const isMultiple = el.multiple;
    if (isMultiple && !Array.isArray(value)) {
        warn(`<select multiple v-model="${binding.expression}"> ` +
                `expects an Array value for its binding, but got ${Object.prototype.toString
                    .call(value)
                    .slice(8, -1)}`, vm);
        return;
    }
    let selected, option;
    for (let i = 0, l = el.options.length; i < l; i++) {
        option = el.options[i];
        if (isMultiple) {
            selected = looseIndexOf(value, getValue(option)) > -1;
            if (option.selected !== selected) {
                option.selected = selected;
            }
        }
        else {
            if (looseEqual(getValue(option), value)) {
                if (el.selectedIndex !== i) {
                    el.selectedIndex = i;
                }
                return;
            }
        }
    }
    if (!isMultiple) {
        el.selectedIndex = -1;
    }
}
function hasNoMatchingOption(value, options) {
    return options.every(o => !looseEqual(o, value));
}
function getValue(option) {
    return '_value' in option ? option._value : option.value;
}
function onCompositionStart(e) {
    e.target.composing = true;
}
function onCompositionEnd(e) {
    // prevent triggering an input event for no reason
    if (!e.target.composing)
        return;
    e.target.composing = false;
    trigger(e.target, 'input');
}
function trigger(el, type) {
    const e = document.createEvent('HTMLEvents');
    e.initEvent(type, true, true);
    el.dispatchEvent(e);
}

// recursively search for possible transition defined inside the component root
function locateNode(vnode) {
    // @ts-expect-error
    return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
        ? locateNode(vnode.componentInstance._vnode)
        : vnode;
}
var show = {
    bind(el, { value }, vnode) {
        vnode = locateNode(vnode);
        const transition = vnode.data && vnode.data.transition;
        const originalDisplay = (el.__vOriginalDisplay =
            el.style.display === 'none' ? '' : el.style.display);
        if (value && transition) {
            vnode.data.show = true;
            enter(vnode, () => {
                el.style.display = originalDisplay;
            });
        }
        else {
            el.style.display = value ? originalDisplay : 'none';
        }
    },
    update(el, { value, oldValue }, vnode) {
        /* istanbul ignore if */
        if (!value === !oldValue)
            return;
        vnode = locateNode(vnode);
        const transition = vnode.data && vnode.data.transition;
        if (transition) {
            vnode.data.show = true;
            if (value) {
                enter(vnode, () => {
                    el.style.display = el.__vOriginalDisplay;
                });
            }
            else {
                leave(vnode, () => {
                    el.style.display = 'none';
                });
            }
        }
        else {
            el.style.display = value ? el.__vOriginalDisplay : 'none';
        }
    },
    unbind(el, binding, vnode, oldVnode, isDestroy) {
        if (!isDestroy) {
            el.style.display = el.__vOriginalDisplay;
        }
    }
};

var platformDirectives = {
    model: directive,
    show
};

// Provides transition support for a single element/component.
const transitionProps = {
    name: String,
    appear: Boolean,
    css: Boolean,
    mode: String,
    type: String,
    enterClass: String,
    leaveClass: String,
    enterToClass: String,
    leaveToClass: String,
    enterActiveClass: String,
    leaveActiveClass: String,
    appearClass: String,
    appearActiveClass: String,
    appearToClass: String,
    duration: [Number, String, Object]
};
// in case the child is also an abstract component, e.g. <keep-alive>
// we want to recursively retrieve the real component to be rendered
function getRealChild(vnode) {
    const compOptions = vnode && vnode.componentOptions;
    if (compOptions && compOptions.Ctor.options.abstract) {
        return getRealChild(getFirstComponentChild(compOptions.children));
    }
    else {
        return vnode;
    }
}
function extractTransitionData(comp) {
    const data = {};
    const options = comp.$options;
    // props
    for (const key in options.propsData) {
        data[key] = comp[key];
    }
    // events.
    // extract listeners and pass them directly to the transition methods
    const listeners = options._parentListeners;
    for (const key in listeners) {
        data[camelize(key)] = listeners[key];
    }
    return data;
}
function placeholder(h, rawChild) {
    // @ts-expect-error
    if (/\d-keep-alive$/.test(rawChild.tag)) {
        return h('keep-alive', {
            props: rawChild.componentOptions.propsData
        });
    }
}
function hasParentTransition(vnode) {
    while ((vnode = vnode.parent)) {
        if (vnode.data.transition) {
            return true;
        }
    }
}
function isSameChild(child, oldChild) {
    return oldChild.key === child.key && oldChild.tag === child.tag;
}
const isNotTextNode = (c) => c.tag || isAsyncPlaceholder(c);
const isVShowDirective = d => d.name === 'show';
var Transition = {
    name: 'transition',
    props: transitionProps,
    abstract: true,
    render(h) {
        let children = this.$slots.default;
        if (!children) {
            return;
        }
        // filter out text nodes (possible whitespaces)
        children = children.filter(isNotTextNode);
        /* istanbul ignore if */
        if (!children.length) {
            return;
        }
        // warn multiple elements
        if (children.length > 1) {
            warn('<transition> can only be used on a single element. Use ' +
                '<transition-group> for lists.', this.$parent);
        }
        const mode = this.mode;
        // warn invalid mode
        if (mode && mode !== 'in-out' && mode !== 'out-in') {
            warn('invalid <transition> mode: ' + mode, this.$parent);
        }
        const rawChild = children[0];
        // if this is a component root node and the component's
        // parent container node also has transition, skip.
        if (hasParentTransition(this.$vnode)) {
            return rawChild;
        }
        // apply transition data to child
        // use getRealChild() to ignore abstract components e.g. keep-alive
        const child = getRealChild(rawChild);
        /* istanbul ignore if */
        if (!child) {
            return rawChild;
        }
        if (this._leaving) {
            return placeholder(h, rawChild);
        }
        // ensure a key that is unique to the vnode type and to this transition
        // component instance. This key will be used to remove pending leaving nodes
        // during entering.
        const id = `__transition-${this._uid}-`;
        child.key =
            child.key == null
                ? child.isComment
                    ? id + 'comment'
                    : id + child.tag
                : isPrimitive(child.key)
                    ? String(child.key).indexOf(id) === 0
                        ? child.key
                        : id + child.key
                    : child.key;
        const data = ((child.data || (child.data = {})).transition =
            extractTransitionData(this));
        const oldRawChild = this._vnode;
        const oldChild = getRealChild(oldRawChild);
        // mark v-show
        // so that the transition module can hand over the control to the directive
        if (child.data.directives && child.data.directives.some(isVShowDirective)) {
            child.data.show = true;
        }
        if (oldChild &&
            oldChild.data &&
            !isSameChild(child, oldChild) &&
            !isAsyncPlaceholder(oldChild) &&
            // #6687 component root is a comment node
            !(oldChild.componentInstance &&
                oldChild.componentInstance._vnode.isComment)) {
            // replace old child transition data with fresh one
            // important for dynamic transitions!
            const oldData = (oldChild.data.transition = extend({}, data));
            // handle transition mode
            if (mode === 'out-in') {
                // return placeholder node and queue update when leave finishes
                this._leaving = true;
                mergeVNodeHook(oldData, 'afterLeave', () => {
                    this._leaving = false;
                    this.$forceUpdate();
                });
                return placeholder(h, rawChild);
            }
            else if (mode === 'in-out') {
                if (isAsyncPlaceholder(child)) {
                    return oldRawChild;
                }
                let delayedLeave;
                const performLeave = () => {
                    delayedLeave();
                };
                mergeVNodeHook(data, 'afterEnter', performLeave);
                mergeVNodeHook(data, 'enterCancelled', performLeave);
                mergeVNodeHook(oldData, 'delayLeave', leave => {
                    delayedLeave = leave;
                });
            }
        }
        return rawChild;
    }
};

// Provides transition support for list items.
const props = extend({
    tag: String,
    moveClass: String
}, transitionProps);
delete props.mode;
var TransitionGroup = {
    props,
    beforeMount() {
        const update = this._update;
        this._update = (vnode, hydrating) => {
            const restoreActiveInstance = setActiveInstance(this);
            // force removing pass
            this.__patch__(this._vnode, this.kept, false, // hydrating
            true // removeOnly (!important, avoids unnecessary moves)
            );
            this._vnode = this.kept;
            restoreActiveInstance();
            update.call(this, vnode, hydrating);
        };
    },
    render(h) {
        const tag = this.tag || this.$vnode.data.tag || 'span';
        const map = Object.create(null);
        const prevChildren = (this.prevChildren = this.children);
        const rawChildren = this.$slots.default || [];
        const children = (this.children = []);
        const transitionData = extractTransitionData(this);
        for (let i = 0; i < rawChildren.length; i++) {
            const c = rawChildren[i];
            if (c.tag) {
                if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
                    children.push(c);
                    map[c.key] = c;
                    (c.data || (c.data = {})).transition = transitionData;
                }
                else {
                    const opts = c.componentOptions;
                    const name = opts
                        ? getComponentName(opts.Ctor.options) || opts.tag || ''
                        : c.tag;
                    warn(`<transition-group> children must be keyed: <${name}>`);
                }
            }
        }
        if (prevChildren) {
            const kept = [];
            const removed = [];
            for (let i = 0; i < prevChildren.length; i++) {
                const c = prevChildren[i];
                c.data.transition = transitionData;
                // @ts-expect-error .getBoundingClientRect is not typed in Node
                c.data.pos = c.elm.getBoundingClientRect();
                if (map[c.key]) {
                    kept.push(c);
                }
                else {
                    removed.push(c);
                }
            }
            this.kept = h(tag, null, kept);
            this.removed = removed;
        }
        return h(tag, null, children);
    },
    updated() {
        const children = this.prevChildren;
        const moveClass = this.moveClass || (this.name || 'v') + '-move';
        if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
            return;
        }
        // we divide the work into three loops to avoid mixing DOM reads and writes
        // in each iteration - which helps prevent layout thrashing.
        children.forEach(callPendingCbs);
        children.forEach(recordPosition);
        children.forEach(applyTranslation);
        // force reflow to put everything in position
        // assign to this to avoid being removed in tree-shaking
        // $flow-disable-line
        this._reflow = document.body.offsetHeight;
        children.forEach((c) => {
            if (c.data.moved) {
                const el = c.elm;
                const s = el.style;
                addTransitionClass(el, moveClass);
                s.transform = s.WebkitTransform = s.transitionDuration = '';
                el.addEventListener(transitionEndEvent, (el._moveCb = function cb(e) {
                    if (e && e.target !== el) {
                        return;
                    }
                    if (!e || /transform$/.test(e.propertyName)) {
                        el.removeEventListener(transitionEndEvent, cb);
                        el._moveCb = null;
                        removeTransitionClass(el, moveClass);
                    }
                }));
            }
        });
    },
    methods: {
        hasMove(el, moveClass) {
            /* istanbul ignore if */
            if (!hasTransition) {
                return false;
            }
            /* istanbul ignore if */
            if (this._hasMove) {
                return this._hasMove;
            }
            // Detect whether an element with the move class applied has
            // CSS transitions. Since the element may be inside an entering
            // transition at this very moment, we make a clone of it and remove
            // all other transition classes applied to ensure only the move class
            // is applied.
            const clone = el.cloneNode();
            if (el._transitionClasses) {
                el._transitionClasses.forEach((cls) => {
                    removeClass(clone, cls);
                });
            }
            addClass(clone, moveClass);
            clone.style.display = 'none';
            this.$el.appendChild(clone);
            const info = getTransitionInfo(clone);
            this.$el.removeChild(clone);
            return (this._hasMove = info.hasTransform);
        }
    }
};
function callPendingCbs(c) {
    /* istanbul ignore if */
    if (c.elm._moveCb) {
        c.elm._moveCb();
    }
    /* istanbul ignore if */
    if (c.elm._enterCb) {
        c.elm._enterCb();
    }
}
function recordPosition(c) {
    c.data.newPos = c.elm.getBoundingClientRect();
}
function applyTranslation(c) {
    const oldPos = c.data.pos;
    const newPos = c.data.newPos;
    const dx = oldPos.left - newPos.left;
    const dy = oldPos.top - newPos.top;
    if (dx || dy) {
        c.data.moved = true;
        const s = c.elm.style;
        s.transform = s.WebkitTransform = `translate(${dx}px,${dy}px)`;
        s.transitionDuration = '0s';
    }
}

var platformComponents = {
    Transition,
    TransitionGroup
};

// install platform specific utils
Vue.config.mustUseProp = mustUseProp;
Vue.config.isReservedTag = isReservedTag;
Vue.config.isReservedAttr = isReservedAttr;
Vue.config.getTagNamespace = getTagNamespace;
Vue.config.isUnknownElement = isUnknownElement;
// install platform runtime directives & components
extend(Vue.options.directives, platformDirectives);
extend(Vue.options.components, platformComponents);
// install platform patch function
Vue.prototype.__patch__ = inBrowser ? patch : noop;
// public mount method
Vue.prototype.$mount = function (el, hydrating) {
    el = el && inBrowser ? query(el) : undefined;
    return mountComponent(this, el, hydrating);
};
// devtools global hook
/* istanbul ignore next */
if (inBrowser) {
    setTimeout(() => {
        if (config.devtools) {
            if (devtools) {
                devtools.emit('init', Vue);
            }
            else {
                // @ts-expect-error
                console[console.info ? 'info' : 'log']('Download the Vue Devtools extension for a better development experience:\n' +
                    'https://github.com/vuejs/vue-devtools');
            }
        }
        if (config.productionTip !== false &&
            typeof console !== 'undefined') {
            // @ts-expect-error
            console[console.info ? 'info' : 'log'](`You are running Vue in development mode.\n` +
                `Make sure to turn on production mode when deploying for production.\n` +
                `See more tips at https://vuejs.org/guide/deployment.html`);
        }
    }, 0);
}

extend(Vue, vca);

module.exports = Vue;