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