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Versions: 49
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Contents
import { root } from '../util/root';
export function symbolIteratorPonyfill(root) {
const Symbol = root.Symbol;
if (typeof Symbol === 'function') {
if (!Symbol.iterator) {
Symbol.iterator = Symbol('iterator polyfill');
}
return Symbol.iterator;
}
else {
// [for Mozilla Gecko 27-35:](https://mzl.la/2ewE1zC)
const { Set } = root;
if (Set && typeof new Set()['@@iterator'] === 'function') {
return '@@iterator';
}
const { Map } = root;
// required for compatability with es6-shim
if (Map) {
let keys = Object.getOwnPropertyNames(Map.prototype);
for (let i = 0; i < keys.length; ++i) {
let key = keys[i];
// according to spec, Map.prototype[@@iterator] and Map.orototype.entries must be equal.
if (key !== 'entries' && key !== 'size' && Map.prototype[key] === Map.prototype['entries']) {
return key;
}
}
}
return '@@iterator';
}
}
export const iterator = symbolIteratorPonyfill(root);
/**
* @deprecated use iterator instead
*/
export const $$iterator = iterator;
//# sourceMappingURL=iterator.js.map
Version data entries
49 entries across 49 versions & 4 rubygems