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45 lines
1.5 KiB
45 lines
1.5 KiB
function _asyncIterator(r) {
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var n,
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t,
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o,
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e = 2;
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for ("undefined" != typeof Symbol && (t = Symbol.asyncIterator, o = Symbol.iterator); e--;) {
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if (t && null != (n = r[t])) return n.call(r);
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if (o && null != (n = r[o])) return new AsyncFromSyncIterator(n.call(r));
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t = "@@asyncIterator", o = "@@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(r) {
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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 n = r.done;
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return Promise.resolve(r.value).then(function (r) {
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return {
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value: r,
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done: n
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};
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});
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}
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return AsyncFromSyncIterator = function AsyncFromSyncIterator(r) {
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this.s = r, this.n = r.next;
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}, AsyncFromSyncIterator.prototype = {
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s: null,
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n: null,
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next: function next() {
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return AsyncFromSyncIteratorContinuation(this.n.apply(this.s, arguments));
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},
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"return": function _return(r) {
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var n = this.s["return"];
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return void 0 === n ? Promise.resolve({
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value: r,
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done: !0
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}) : AsyncFromSyncIteratorContinuation(n.apply(this.s, arguments));
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},
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"throw": function _throw(r) {
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var n = this.s["return"];
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return void 0 === n ? Promise.reject(r) : AsyncFromSyncIteratorContinuation(n.apply(this.s, arguments));
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}
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}, new AsyncFromSyncIterator(r);
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}
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export { _asyncIterator as default }; |