import { wrapWithAbort } from './operators/withabort.js'; import { throwIfAborted } from '../aborterror.js'; import { FindOptions } from './findoptions.js'; /** * Determines whether all elements of an async-iterable sequence satisfy 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 for a predicate for filtering, thisArg for binding and AbortSignal for cancellation. * @returns {Promise} An async-iterable sequence containing a single element determining whether all elements in the * source sequence pass the test in the specified predicate. */ export async function every( 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 false; } } return true; }