es-toolkit/docs/reference/array/takeRightWhile.md

takeRightWhile

Takes elements from the end of the array while the predicate function returns true.

Signature

function takeRightWhile<T>(arr: T[], shouldContinueTaking: (item: T) => boolean): T[];

Parameters

• arr (T[]): The array to take elements from.
• shouldContinueTaking ((item: T) => boolean): The predicate function that is called with each element. Elements are included in the result as long as this function returns true.

Returns

(T[]) A new array containing the elements taken from the end while the predicate returns true.

Examples

// Returns [3, 2, 1]
takeRightWhile([5, 4, 3, 2, 1], n => n < 4);

// Returns []
takeRightWhile([1, 2, 3], n => n > 3);