| 1 | import { comparer } from '../util/comparer';
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| 2 | import { wrapWithAbort } from './operators/withabort';
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| 3 | import { throwIfAborted } from '../aborterror';
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| 4 | /**
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| 5 | * Determines whether an async-itreable includes a certain value among its entries, returning true or false as appropriate.
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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 sequence.
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| 9 | * @param {AsyncIterable<T>} source The source sequence to search for the item.
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| 10 | * @param {T} valueToFind The value to search for.
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| 11 | * @param {number} [fromIndex=0] The position in this async-iterable at which to begin searching for valueToFind.
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| 12 | * @param {AbortSignal} [signal] An optional abort signal to cancel the operation at any time.
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| 13 | * @returns {Promise<boolean>} Returns a promise containing true if the value valueToFind is found within the async-iterable.
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| 14 | */
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| 15 | export async function includes(source, valueToFind, fromIndex = 0, signal) {
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| 16 | throwIfAborted(signal);
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| 17 | let fromIdx = fromIndex;
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| 18 | let i = 0;
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| 19 | if (Math.abs(fromIdx)) {
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| 20 | fromIdx = 0;
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| 21 | }
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| 22 | for await (const item of wrapWithAbort(source, signal)) {
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| 23 | if (i++ > fromIdx && comparer(item, valueToFind)) {
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| 24 | return true;
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| 25 | }
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| 26 | }
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| 27 | return false;
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| 28 | }
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| 29 |
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| 30 | //# sourceMappingURL=includes.mjs.map
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