deno.land / std@0.224.0 / collections / drop_while.ts
1234567891011121314151617181920212223242526272829303132// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
/** * Returns a new array that drops all elements in the given collection until the * first element that does not match the given predicate. * * @example * ```ts * import { dropWhile } from "https://deno.land/std@$STD_VERSION/collections/drop_while.ts"; * import { assertEquals } from "https://deno.land/std@$STD_VERSION/assert/assert_equals.ts"; * * const numbers = [3, 2, 5, 2, 5]; * const dropWhileNumbers = dropWhile(numbers, (i) => i !== 2); * * assertEquals(dropWhileNumbers, [2, 5, 2, 5]); * ``` */export function dropWhile<T>( array: readonly T[], predicate: (el: T) => boolean,): T[] { let offset = 0; const length = array.length;
while (length > offset && predicate(array[offset] as T)) { offset++; }
return array.slice(offset, length);}
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