| | "use strict"; |
| |
|
| | function _async_iterator(iterable) { |
| | var method, async, sync, retry = 2; |
| | for ("undefined" != typeof Symbol && (async = Symbol.asyncIterator, sync = Symbol.iterator); retry--;) { |
| | if (async && null != (method = iterable[async])) return method.call(iterable); |
| | if (sync && null != (method = iterable[sync])) return new AsyncFromSyncIterator(method.call(iterable)); |
| | async = "@@asyncIterator", sync = "@@iterator"; |
| | } |
| | throw new TypeError("Object is not async iterable"); |
| | } |
| | function AsyncFromSyncIterator(s) { |
| | function AsyncFromSyncIteratorContinuation(r) { |
| | if (Object(r) !== r) return Promise.reject(new TypeError(r + " is not an object.")); |
| |
|
| | var done = r.done; |
| |
|
| | return Promise.resolve(r.value).then(function(value) { |
| | return { value: value, done: done }; |
| | }); |
| | } |
| |
|
| | return AsyncFromSyncIterator = function(s) { |
| | this.s = s, this.n = s.next; |
| | }, |
| | AsyncFromSyncIterator.prototype = { |
| | s: null, |
| | n: null, |
| |
|
| | next: function() { |
| | return AsyncFromSyncIteratorContinuation(this.n.apply(this.s, arguments)); |
| | }, |
| | return: function(value) { |
| | var ret = this.s.return; |
| |
|
| | return void 0 === ret ? Promise.resolve({ value: value, done: !0 }) : AsyncFromSyncIteratorContinuation(ret.apply(this.s, arguments)); |
| | }, |
| | throw: function(value) { |
| | var thr = this.s.return; |
| |
|
| | return void 0 === thr ? Promise.reject(value) : AsyncFromSyncIteratorContinuation(thr.apply(this.s, arguments)); |
| | } |
| | }, |
| | new AsyncFromSyncIterator(s); |
| | } |
| | exports._ = _async_iterator; |
| |
|