export {}; declare global { interface Array { findLast(predicate: (value: T, index: number, obj: T[]) => value is S, thisArg?: any): S | undefined; findLast(predicate: (value: T, index: number, obj: T[]) => unknown, thisArg?: any): T | undefined; findLastIndex(predicate: (value: T, index: number, obj: T[]) => unknown, thisArg?: any): number; } }