/**
 * A tuple data-structure that can carry two values viz _0 and _1.
 */
export declare class Tuple<A0, A1> {
    readonly _0: A0;
    readonly _1: A1;
    /**
     * Creates a new instance of [[Tuple]]
     */
    static of<A0, A1>(_0: A0, _1: A1): Tuple<A0, A1>;
    private constructor();
    /**
     * Maps over both the first and the second value.
     */
    biMap<B0, B1>(LL: (L: A0) => B0, RR: (R: A1) => B1): Tuple<B0, B1>;
    /**
     * Maps over the zeroth value
     */
    map0<LL>(_0: (R: A0) => LL): Tuple<LL, A1>;
    /**
     * Maps over the first value
     */
    map1<RR>(RR: (R: A1) => RR): Tuple<A0, RR>;
}