| 1 | import { wrapWithAbort } from './operators/withabort';
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| 2 | import { throwIfAborted } from '../aborterror';
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| 3 | /**
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| 4 | * Returns a promise that represents how many elements in the specified async-iterable sequence satisfy a condition
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| 5 | * otherwise, the number of items in the sequence.
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| 6 | *
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| 7 | * @export
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| 8 | * @template T The type of elements in the source collection.
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| 9 | * @param {AsyncIterable<T>} source An async-iterable sequence that contains elements to be counted.
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| 10 | * @param {OptionalFindOptions<T>} [options] The options for a predicate for filtering, thisArg for binding and AbortSignal for cancellation.
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| 11 | * @returns {Promise<number>} The number of matching elements for the given condition if provided, otherwise
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| 12 | * the number of elements in the sequence.
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| 13 | */
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| 14 | export async function count(source, options) {
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| 15 | const { ['signal']: signal, ['thisArg']: thisArg, ['predicate']: predicate = async () => true } = options || {};
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| 16 | throwIfAborted(signal);
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| 17 | let i = 0;
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| 18 | for await (const item of wrapWithAbort(source, signal)) {
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| 19 | if (await predicate.call(thisArg, item, i, signal)) {
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| 20 | i++;
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| 21 | }
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| 22 | }
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| 23 | return i;
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| 24 | }
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| 25 |
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| 26 | //# sourceMappingURL=count.mjs.map
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