import { wrapWithAbort } from './operators/withabort.js'; import { throwIfAborted } from '../aborterror.js'; import { FindOptions } from './findoptions.js'; /** * Determines whether any element of an async-iterable sequence satisfies a condition. * * @template T The type of the elements in the source sequence. * @param {AsyncIterable} source An async-iterable sequence whose elements to apply the predicate to. * @param {FindOptions} options The options which includes a required predicate, an optional * thisArg for binding, and an abort signal for cancellation. * @returns {Promise} A promise with a boolean determining whether any elements in the source sequence * pass the test in the specified predicate. */ export async function some(source: AsyncIterable, options: FindOptions): Promise { const { ['signal']: signal, ['thisArg']: thisArg, ['predicate']: predicate } = options; throwIfAborted(signal); let i = 0; for await (const item of wrapWithAbort(source, signal)) { if (await predicate.call(thisArg, item, i++, signal)) { return true; } } return false; }