1 | import { AsyncSink } from './asyncsink';
|
2 | import { memoize } from './operators/memoize';
|
3 | export function asyncifyErrback(func) {
|
4 | return function (...args) {
|
5 | const sink = new AsyncSink();
|
6 | const handler = function (err, ...innerArgs) {
|
7 | if (err) {
|
8 | sink.error(err);
|
9 | sink.end();
|
10 | }
|
11 | else {
|
12 | sink.write(innerArgs.length === 1 ? innerArgs[0] : innerArgs);
|
13 | sink.end();
|
14 | }
|
15 | };
|
16 | try {
|
17 | func(...args.concat(handler));
|
18 | }
|
19 | catch (e) {
|
20 | sink.error(e);
|
21 | sink.end();
|
22 | }
|
23 | const yielder = async function* () {
|
24 | for (let next; !(next = await sink.next()).done;) {
|
25 | yield next.value;
|
26 | }
|
27 | };
|
28 | return memoize()(yielder());
|
29 | };
|
30 | }
|
31 |
|
32 |
|