| 1 | import { wrapWithAbort } from './operators/withabort';
|
| 2 | import { throwIfAborted } from '../aborterror';
|
| 3 | /**
|
| 4 | * Returns the value of the first element in the provided async-iterable that satisfies the provided testing function.
|
| 5 | *
|
| 6 | * @export
|
| 7 | * @template T The type of the elements in the source sequence.
|
| 8 | * @param {AsyncIterable<T>} source An async-iterable sequence whose elements to apply the predicate to.
|
| 9 | * @param {FindOptions<T>} options The options for a predicate for filtering, thisArg for binding and AbortSignal for cancellation.
|
| 10 | * @returns {(Promise<S | undefined>)} A promise with the value of the first element that matches the predicate.
|
| 11 | */
|
| 12 | export async function find(source, options) {
|
| 13 | const { ['signal']: signal, ['thisArg']: thisArg, ['predicate']: predicate } = options;
|
| 14 | throwIfAborted(signal);
|
| 15 | let i = 0;
|
| 16 | for await (const item of wrapWithAbort(source, signal)) {
|
| 17 | if (await predicate.call(thisArg, item, i++, signal)) {
|
| 18 | return item;
|
| 19 | }
|
| 20 | }
|
| 21 | return undefined;
|
| 22 | }
|
| 23 |
|
| 24 | //# sourceMappingURL=find.mjs.map
|