Function findLastIndex

src/shared/array.ts:9–17

(array: Array<T>, predicate: (value: T, index: number, obj: T[]) => boolean)

 * findLastIndex immediately returns that element index. Otherwise, findLastIndex returns -1.
 */
export function findLastIndex<T>(array: Array<T>, predicate: (value: T, index: number, obj: T[]) => boolean): number {
	let l = array.length
	while (l--) {
		if (predicate(array[l], l, array)) {
			return l
		}
	}
	return -1
}

export function findLast<T>(array: Array<T>, predicate: (value: T, index: number, obj: T[]) => boolean): T | undefined {
	const index = findLastIndex(array, predicate)