work.suroh.tk/node_modules/rxjs/symbol/iterator.js

38 lines
1.3 KiB
JavaScript

"use strict";
var root_1 = require('../util/root');
function symbolIteratorPonyfill(root) {
var 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)
var Set_1 = root.Set;
if (Set_1 && typeof new Set_1()['@@iterator'] === 'function') {
return '@@iterator';
}
var Map_1 = root.Map;
// required for compatability with es6-shim
if (Map_1) {
var keys = Object.getOwnPropertyNames(Map_1.prototype);
for (var i = 0; i < keys.length; ++i) {
var key = keys[i];
// according to spec, Map.prototype[@@iterator] and Map.orototype.entries must be equal.
if (key !== 'entries' && key !== 'size' && Map_1.prototype[key] === Map_1.prototype['entries']) {
return key;
}
}
}
return '@@iterator';
}
}
exports.symbolIteratorPonyfill = symbolIteratorPonyfill;
exports.iterator = symbolIteratorPonyfill(root_1.root);
/**
* @deprecated use iterator instead
*/
exports.$$iterator = exports.iterator;
//# sourceMappingURL=iterator.js.map