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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | 8x 8x 2x 2x 8x 8x 2x 6x 2x | import { purry } from './purry'; /** * Returns elements from the array until predicate returns false. * @param array the array * @param fn the predicate * @signature * P.takeWhile(array, fn) * @signature * P.takeWhile(fn)(array) * @example * P.takeWhile([1, 2, 3, 4, 3, 2, 1], x => x !== 4) // => [1, 2, 3] * P.pipe([1, 2, 3, 4, 3, 2, 1], P.takeWhile(x => x !== 4)) // => [1, 2, 3] * @category Array, Pipe */ export function takeWhile<T>( array: readonly T[], fn: (item: T) => boolean ): T[]; export function takeWhile<T>( fn: (item: T) => boolean ): (array: readonly T[]) => T[]; export function takeWhile() { return purry(_takeWhile, arguments); } function _takeWhile<T>(array: T[], fn: (item: T) => boolean) { const ret: T[] = []; for (const item of array) { if (!fn(item)) { break; } ret.push(item); } return ret; } |