mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-08 18:17:48 +00:00
Bump to v4.7.0.
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20
_getTag.js
20
_getTag.js
@@ -1,13 +1,18 @@
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var Map = require('./_Map'),
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var DataView = require('./_DataView'),
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Map = require('./_Map'),
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Promise = require('./_Promise'),
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Set = require('./_Set'),
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WeakMap = require('./_WeakMap');
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/** `Object#toString` result references. */
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var mapTag = '[object Map]',
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objectTag = '[object Object]',
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promiseTag = '[object Promise]',
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setTag = '[object Set]',
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weakMapTag = '[object WeakMap]';
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var dataViewTag = '[object DataView]';
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/** Used for built-in method references. */
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var objectProto = Object.prototype;
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@@ -21,7 +26,9 @@ var funcToString = Function.prototype.toString;
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var objectToString = objectProto.toString;
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/** Used to detect maps, sets, and weakmaps. */
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var mapCtorString = Map ? funcToString.call(Map) : '',
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var dataViewCtorString = DataView ? (DataView + '') : '',
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mapCtorString = Map ? funcToString.call(Map) : '',
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promiseCtorString = Promise ? funcToString.call(Promise) : '',
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setCtorString = Set ? funcToString.call(Set) : '',
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weakMapCtorString = WeakMap ? funcToString.call(WeakMap) : '';
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@@ -36,8 +43,11 @@ function getTag(value) {
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return objectToString.call(value);
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}
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// Fallback for IE 11 providing `toStringTag` values for maps, sets, and weakmaps.
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if ((Map && getTag(new Map) != mapTag) ||
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// Fallback for data views, maps, sets, and weak maps in IE 11,
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// for data views in Edge, and promises in Node.js.
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if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
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(Map && getTag(new Map) != mapTag) ||
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(Promise && getTag(Promise.resolve()) != promiseTag) ||
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(Set && getTag(new Set) != setTag) ||
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(WeakMap && getTag(new WeakMap) != weakMapTag)) {
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getTag = function(value) {
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@@ -47,7 +57,9 @@ if ((Map && getTag(new Map) != mapTag) ||
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if (ctorString) {
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switch (ctorString) {
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case dataViewCtorString: return dataViewTag;
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case mapCtorString: return mapTag;
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case promiseCtorString: return promiseTag;
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case setCtorString: return setTag;
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case weakMapCtorString: return weakMapTag;
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}
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