import { Ref } from './types';
interface Mapper<T, U> {
    (v: T): U;
    (v: T, i: Ref<number>): U;
}
export declare function map<T, U>(list: () => T[], mapFn: Mapper<T, U>): () => U[];
export declare function index<T, U>(list: () => T[], mapFn: (v: Ref<T>, i: number) => U): () => U[];
export {};