| 1 | import { AsyncSink } from '../asyncsink';
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| 2 | import { memoize } from './memoize';
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| 3 | export function asyncifyErrback(func) {
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| 4 | return function (...args) {
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| 5 | const sink = new AsyncSink();
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| 6 | const handler = function (err, ...innerArgs) {
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| 7 | if (err) {
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| 8 | sink.error(err);
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| 9 | sink.end();
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| 10 | }
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| 11 | else {
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| 12 | sink.write(innerArgs.length === 1 ? innerArgs[0] : innerArgs);
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| 13 | sink.end();
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| 14 | }
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| 15 | };
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| 16 | try {
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| 17 | func(...args.concat(handler));
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| 18 | }
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| 19 | catch (e) {
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| 20 | sink.error(e);
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| 21 | sink.end();
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| 22 | }
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| 23 | return memoize((async function* () {
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| 24 | for (let next; !(next = await sink.next()).done;) {
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| 25 | yield next.value;
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| 26 | }
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| 27 | })());
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| 28 | };
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| 29 | }
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| 30 |
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| 31 |
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