es-toolkit/dist/array/takeRightWhile.mjs

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

//#region src/array/takeRightWhile.ts
/**
* Takes elements from the end of the array while the predicate function returns `true`.
*
* @template T - Type of elements in the input array.
*
* @param arr - The array to take elements from.
* @param shouldContinueTaking - The function invoked per element with the item, its index, and the array.
* @returns A new array containing the elements taken from the end while the predicate returns `true`.
*
* @example
* // Returns [3, 2, 1]
* takeRightWhile([5, 4, 3, 2, 1], n => n < 4);
*
* @example
* // Returns []
* takeRightWhile([1, 2, 3], n => n > 3);
*
* @example
* // Using index parameter
* takeRightWhile([10, 20, 30, 40], (x, index) => index > 1);
* // Returns: [30, 40]
*/
function takeRightWhile(arr, shouldContinueTaking) {
	for (let i = arr.length - 1; i >= 0; i--) if (!shouldContinueTaking(arr[i], i, arr)) return arr.slice(i + 1);
	return arr.slice();
}
//#endregion
export { takeRightWhile };