/** @license React v16.13.1

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* react.development.js

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*

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* Copyright (c) Facebook, Inc. and its affiliates.

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*

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* This source code is licensed under the MIT license found in the

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* LICENSE file in the root directory of this source tree.

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*/

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'use strict';

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(function (global, factory) {

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typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :

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typeof define === 'function' && define.amd ? define(['exports'], factory) :

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(global = global || self, factory(global.React = {}));

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}(this, (function (exports) { 'use strict';

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var ReactVersion = '16.13.1';

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// The Symbol used to tag the ReactElement-like types. If there is no native Symbol

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// nor polyfill, then a plain number is used for performance.

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var hasSymbol = typeof Symbol === 'function' && Symbol.for;

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var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;

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var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;

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var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;

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var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;

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var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;

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var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;

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var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary

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var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;

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var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;

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var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;

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var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;

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var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;

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var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;

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var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;

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var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;

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var REACT_RESPONDER_TYPE = hasSymbol ? Symbol.for('react.responder') : 0xead6;

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var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;

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var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;

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var FAUX_ITERATOR_SYMBOL = '@@iterator';

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function getIteratorFn(maybeIterable) {

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if (maybeIterable === null || typeof maybeIterable !== 'object') {

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return null;

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}

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var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];

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if (typeof maybeIterator === 'function') {

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return maybeIterator;

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}

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return null;

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}

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/*

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object-assign

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(c) Sindre Sorhus

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@license MIT

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*/

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/* eslint-disable no-unused-vars */

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var getOwnPropertySymbols = Object.getOwnPropertySymbols;

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var hasOwnProperty = Object.prototype.hasOwnProperty;

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var propIsEnumerable = Object.prototype.propertyIsEnumerable;

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function toObject(val) {

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if (val === null || val === undefined) {

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throw new TypeError('Object.assign cannot be called with null or undefined');

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}

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return Object(val);

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}

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function shouldUseNative() {

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try {

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if (!Object.assign) {

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return false;

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}

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// Detect buggy property enumeration order in older V8 versions.

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// https://bugs.chromium.org/p/v8/issues/detail?id=4118

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var test1 = new String('abc'); // eslint-disable-line no-new-wrappers

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test1[5] = 'de';

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if (Object.getOwnPropertyNames(test1)[0] === '5') {

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return false;

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}

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// https://bugs.chromium.org/p/v8/issues/detail?id=3056

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var test2 = {};

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for (var i = 0; i < 10; i++) {

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test2['_' + String.fromCharCode(i)] = i;

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}

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var order2 = Object.getOwnPropertyNames(test2).map(function (n) {

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return test2[n];

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});

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if (order2.join('') !== '0123456789') {

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return false;

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}

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// https://bugs.chromium.org/p/v8/issues/detail?id=3056

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var test3 = {};

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'abcdefghijklmnopqrst'.split('').forEach(function (letter) {

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test3[letter] = letter;

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});

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if (Object.keys(Object.assign({}, test3)).join('') !==

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'abcdefghijklmnopqrst') {

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return false;

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}

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return true;

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} catch (err) {

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// We don't expect any of the above to throw, but better to be safe.

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return false;

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}

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}

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var objectAssign = shouldUseNative() ? Object.assign : function (target, source) {

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var from;

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var to = toObject(target);

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var symbols;

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for (var s = 1; s < arguments.length; s++) {

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from = Object(arguments[s]);

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for (var key in from) {

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if (hasOwnProperty.call(from, key)) {

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to[key] = from[key];

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}

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}

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if (getOwnPropertySymbols) {

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symbols = getOwnPropertySymbols(from);

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for (var i = 0; i < symbols.length; i++) {

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if (propIsEnumerable.call(from, symbols[i])) {

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to[symbols[i]] = from[symbols[i]];

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}

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}

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}

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}

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return to;

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};

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/**

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* Keeps track of the current dispatcher.

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*/

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var ReactCurrentDispatcher = {

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/**

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* @internal

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* @type {ReactComponent}

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*/

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current: null

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};

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/**

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* Keeps track of the current batch's configuration such as how long an update

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* should suspend for if it needs to.

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*/

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var ReactCurrentBatchConfig = {

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suspense: null

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};

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/**

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* Keeps track of the current owner.

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*

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* The current owner is the component who should own any components that are

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* currently being constructed.

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*/

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var ReactCurrentOwner = {

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/**

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* @internal

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* @type {ReactComponent}

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*/

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current: null

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};

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var BEFORE_SLASH_RE = /^(.*)[\\\/]/;

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function describeComponentFrame (name, source, ownerName) {

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var sourceInfo = '';

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if (source) {

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var path = source.fileName;

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var fileName = path.replace(BEFORE_SLASH_RE, '');

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{

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// In DEV, include code for a common special case:

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// prefer "folder/index.js" instead of just "index.js".

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if (/^index\./.test(fileName)) {

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var match = path.match(BEFORE_SLASH_RE);

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if (match) {

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var pathBeforeSlash = match[1];

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if (pathBeforeSlash) {

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var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');

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fileName = folderName + '/' + fileName;

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}

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}

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}

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}

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sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';

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} else if (ownerName) {

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sourceInfo = ' (created by ' + ownerName + ')';

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}

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return '\n in ' + (name || 'Unknown') + sourceInfo;

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}

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var Resolved = 1;

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function refineResolvedLazyComponent(lazyComponent) {

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return lazyComponent._status === Resolved ? lazyComponent._result : null;

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}

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function getWrappedName(outerType, innerType, wrapperName) {

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var functionName = innerType.displayName || innerType.name || '';

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return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);

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}

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function getComponentName(type) {

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if (type == null) {

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// Host root, text node or just invalid type.

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return null;

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}

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{

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if (typeof type.tag === 'number') {

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error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');

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}

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}

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if (typeof type === 'function') {

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return type.displayName || type.name || null;

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}

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if (typeof type === 'string') {

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return type;

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}

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switch (type) {

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case REACT_FRAGMENT_TYPE:

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return 'Fragment';

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case REACT_PORTAL_TYPE:

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return 'Portal';

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case REACT_PROFILER_TYPE:

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return "Profiler";

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case REACT_STRICT_MODE_TYPE:

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return 'StrictMode';

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case REACT_SUSPENSE_TYPE:

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return 'Suspense';

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case REACT_SUSPENSE_LIST_TYPE:

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return 'SuspenseList';

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}

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if (typeof type === 'object') {

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switch (type.$$typeof) {

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case REACT_CONTEXT_TYPE:

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return 'Context.Consumer';

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case REACT_PROVIDER_TYPE:

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return 'Context.Provider';

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case REACT_FORWARD_REF_TYPE:

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return getWrappedName(type, type.render, 'ForwardRef');

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case REACT_MEMO_TYPE:

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return getComponentName(type.type);

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case REACT_BLOCK_TYPE:

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return getComponentName(type.render);

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case REACT_LAZY_TYPE:

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{

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var thenable = type;

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var resolvedThenable = refineResolvedLazyComponent(thenable);

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if (resolvedThenable) {

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return getComponentName(resolvedThenable);

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}

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break;

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}

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}

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}

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return null;

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}

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var ReactDebugCurrentFrame = {};

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var currentlyValidatingElement = null;

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function setCurrentlyValidatingElement(element) {

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{

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currentlyValidatingElement = element;

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}

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}

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{

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// Stack implementation injected by the current renderer.

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ReactDebugCurrentFrame.getCurrentStack = null;

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ReactDebugCurrentFrame.getStackAddendum = function () {

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var stack = ''; // Add an extra top frame while an element is being validated

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if (currentlyValidatingElement) {

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var name = getComponentName(currentlyValidatingElement.type);

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var owner = currentlyValidatingElement._owner;

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stack += describeComponentFrame(name, currentlyValidatingElement._source, owner && getComponentName(owner.type));

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} // Delegate to the injected renderer-specific implementation

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var impl = ReactDebugCurrentFrame.getCurrentStack;

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if (impl) {

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stack += impl() || '';

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}

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return stack;

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};

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}

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[325] Fix | Delete

/**

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* Used by act() to track whether you're inside an act() scope.

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*/

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var IsSomeRendererActing = {

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current: false

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};

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var ReactSharedInternals = {

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ReactCurrentDispatcher: ReactCurrentDispatcher,

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ReactCurrentBatchConfig: ReactCurrentBatchConfig,

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ReactCurrentOwner: ReactCurrentOwner,

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IsSomeRendererActing: IsSomeRendererActing,

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// Used by renderers to avoid bundling object-assign twice in UMD bundles:

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assign: objectAssign

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};

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{

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objectAssign(ReactSharedInternals, {

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// These should not be included in production.

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ReactDebugCurrentFrame: ReactDebugCurrentFrame,

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// Shim for React DOM 16.0.0 which still destructured (but not used) this.

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// TODO: remove in React 17.0.

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ReactComponentTreeHook: {}

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});

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}

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// by calls to these methods by a Babel plugin.

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//

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// In PROD (or in packages without access to React internals),

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// they are left as they are instead.

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function warn(format) {

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{

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for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {

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args[_key - 1] = arguments[_key];

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}

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printWarning('warn', format, args);

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}

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}

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function error(format) {

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{

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for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {

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args[_key2 - 1] = arguments[_key2];

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}

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printWarning('error', format, args);

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}

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}

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function printWarning(level, format, args) {

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// When changing this logic, you might want to also

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// update consoleWithStackDev.www.js as well.

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{

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var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n in') === 0;

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if (!hasExistingStack) {

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var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;

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var stack = ReactDebugCurrentFrame.getStackAddendum();

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if (stack !== '') {

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format += '%s';

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args = args.concat([stack]);

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}

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}

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var argsWithFormat = args.map(function (item) {

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return '' + item;

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}); // Careful: RN currently depends on this prefix

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argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it

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// breaks IE9: https://github.com/facebook/react/issues/13610

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// eslint-disable-next-line react-internal/no-production-logging

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Function.prototype.apply.call(console[level], console, argsWithFormat);

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try {

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// --- Welcome to debugging React ---

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// This error was thrown as a convenience so that you can use this stack

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// to find the callsite that caused this warning to fire.

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var argIndex = 0;

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var message = 'Warning: ' + format.replace(/%s/g, function () {

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return args[argIndex++];

[408] Fix | Delete

});

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throw new Error(message);

[410] Fix | Delete

} catch (x) {}

[411] Fix | Delete

}

[412] Fix | Delete

}

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var didWarnStateUpdateForUnmountedComponent = {};

[415] Fix | Delete

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function warnNoop(publicInstance, callerName) {

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{

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var _constructor = publicInstance.constructor;

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var componentName = _constructor && (_constructor.displayName || _constructor.name) || 'ReactClass';

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var warningKey = componentName + "." + callerName;

[421] Fix | Delete

[422] Fix | Delete

if (didWarnStateUpdateForUnmountedComponent[warningKey]) {

[423] Fix | Delete

return;

[424] Fix | Delete

}

[425] Fix | Delete

[426] Fix | Delete

error("Can't call %s on a component that is not yet mounted. " + 'This is a no-op, but it might indicate a bug in your application. ' + 'Instead, assign to `this.state` directly or define a `state = {};` ' + 'class property with the desired state in the %s component.', callerName, componentName);

[427] Fix | Delete

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didWarnStateUpdateForUnmountedComponent[warningKey] = true;

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}

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}

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/**

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* This is the abstract API for an update queue.

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*/

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[435] Fix | Delete

[436] Fix | Delete

var ReactNoopUpdateQueue = {

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/**

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* Checks whether or not this composite component is mounted.

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* @param {ReactClass} publicInstance The instance we want to test.

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* @return {boolean} True if mounted, false otherwise.

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* @protected

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* @final

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*/

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isMounted: function (publicInstance) {

[445] Fix | Delete

return false;

[446] Fix | Delete

},

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[448] Fix | Delete

/**

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* Forces an update. This should only be invoked when it is known with

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* certainty that we are **not** in a DOM transaction.

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*

[452] Fix | Delete

* You may want to call this when you know that some deeper aspect of the

[453] Fix | Delete

* component's state has changed but `setState` was not called.

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*

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* This will not invoke `shouldComponentUpdate`, but it will invoke

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* `componentWillUpdate` and `componentDidUpdate`.

[457] Fix | Delete

*

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* @param {ReactClass} publicInstance The instance that should rerender.

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* @param {?function} callback Called after component is updated.

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* @param {?string} callerName name of the calling function in the public API.

[461] Fix | Delete

* @internal

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*/

[463] Fix | Delete

enqueueForceUpdate: function (publicInstance, callback, callerName) {

[464] Fix | Delete

warnNoop(publicInstance, 'forceUpdate');

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},

[466] Fix | Delete

[467] Fix | Delete

/**

[468] Fix | Delete

* Replaces all of the state. Always use this or `setState` to mutate state.

[469] Fix | Delete

* You should treat `this.state` as immutable.

[470] Fix | Delete

*

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* There is no guarantee that `this.state` will be immediately updated, so

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* accessing `this.state` after calling this method may return the old value.

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*

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* @param {ReactClass} publicInstance The instance that should rerender.

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* @param {object} completeState Next state.

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* @param {?function} callback Called after component is updated.

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* @param {?string} callerName name of the calling function in the public API.

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* @internal

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*/

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enqueueReplaceState: function (publicInstance, completeState, callback, callerName) {

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warnNoop(publicInstance, 'replaceState');

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},

[483] Fix | Delete

[484] Fix | Delete

/**

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* Sets a subset of the state. This only exists because _pendingState is

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* internal. This provides a merging strategy that is not available to deep

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* properties which is confusing. TODO: Expose pendingState or don't use it

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* during the merge.

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*

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* @param {ReactClass} publicInstance The instance that should rerender.

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* @param {object} partialState Next partial state to be merged with state.

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* @param {?function} callback Called after component is updated.

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* @param {?string} Name of the calling function in the public API.

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* @internal

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*/

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enqueueSetState: function (publicInstance, partialState, callback, callerName) {

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warnNoop(publicInstance, 'setState');

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}

[499] Fix | Delete