| 1 | import { AsyncIterableX } from './asynciterablex';
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| 2 | import { returnAsyncIterator } from '../internal/returniterator';
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| 3 | export class CatchWithAsyncIterable extends AsyncIterableX {
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| 4 | constructor(source, handler) {
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| 5 | super();
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| 6 | this._source = source;
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| 7 | this._handler = handler;
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| 8 | }
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| 9 | async *[Symbol.asyncIterator]() {
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| 10 | let err, hasError = false, it = this._source[Symbol.asyncIterator]();
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| 11 | while (1) {
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| 12 | let c = {};
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| 13 | try {
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| 14 | c = await it.next();
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| 15 | if (c.done) {
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| 16 | await returnAsyncIterator(it);
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| 17 | break;
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| 18 | }
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| 19 | }
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| 20 | catch (e) {
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| 21 | err = await this._handler(e);
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| 22 | hasError = true;
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| 23 | await returnAsyncIterator(it);
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| 24 | break;
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| 25 | }
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| 26 | yield c.value;
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| 27 | }
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| 28 | if (hasError) {
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| 29 | for await (let item of err) {
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| 30 | yield item;
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| 31 | }
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| 32 | }
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| 33 | }
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| 34 | }
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| 35 | export function catchWith(source, handler) {
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| 36 | return new CatchWithAsyncIterable(source, handler);
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| 37 | }
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| 38 |
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| 39 |
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