github-pages-deploy-action/node_modules/core-js-pure/modules/esnext.async-iterator.as-indexed-pairs.js
2020-03-06 22:45:40 -05:00

28 lines
849 B
JavaScript

'use strict';
// https://github.com/tc39/proposal-iterator-helpers
var $ = require('../internals/export');
var anObject = require('../internals/an-object');
var createAsyncIteratorProxy = require('../internals/async-iterator-create-proxy');
var AsyncIteratorProxy = createAsyncIteratorProxy(function (arg, Promise) {
var state = this;
var iterator = state.iterator;
return Promise.resolve(anObject(state.next.call(iterator, arg))).then(function (step) {
if (anObject(step).done) {
state.done = true;
return { done: true, value: undefined };
}
return { done: false, value: [state.index++, step.value] };
});
});
$({ target: 'AsyncIterator', proto: true, real: true }, {
asIndexedPairs: function asIndexedPairs() {
return new AsyncIteratorProxy({
iterator: anObject(this),
index: 0
});
}
});