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musix-oss/node_modules/core-js/modules/web.dom-collections.iterator.js

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2020-03-03 20:30:50 +00:00
var global = require('../internals/global');
var DOMIterables = require('../internals/dom-iterables');
var ArrayIteratorMethods = require('../modules/es.array.iterator');
var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
var wellKnownSymbol = require('../internals/well-known-symbol');
var ITERATOR = wellKnownSymbol('iterator');
var TO_STRING_TAG = wellKnownSymbol('toStringTag');
var ArrayValues = ArrayIteratorMethods.values;
for (var COLLECTION_NAME in DOMIterables) {
var Collection = global[COLLECTION_NAME];
var CollectionPrototype = Collection && Collection.prototype;
if (CollectionPrototype) {
// some Chrome versions have non-configurable methods on DOMTokenList
if (CollectionPrototype[ITERATOR] !== ArrayValues) try {
createNonEnumerableProperty(CollectionPrototype, ITERATOR, ArrayValues);
} catch (error) {
CollectionPrototype[ITERATOR] = ArrayValues;
}
if (!CollectionPrototype[TO_STRING_TAG]) {
createNonEnumerableProperty(CollectionPrototype, TO_STRING_TAG, COLLECTION_NAME);
}
if (DOMIterables[COLLECTION_NAME]) for (var METHOD_NAME in ArrayIteratorMethods) {
// some Chrome versions have non-configurable methods on DOMTokenList
if (CollectionPrototype[METHOD_NAME] !== ArrayIteratorMethods[METHOD_NAME]) try {
createNonEnumerableProperty(CollectionPrototype, METHOD_NAME, ArrayIteratorMethods[METHOD_NAME]);
} catch (error) {
CollectionPrototype[METHOD_NAME] = ArrayIteratorMethods[METHOD_NAME];
}
}
}
}