import { Ctx } from "../../ctx";
import { Core } from "../../core";
import { Value } from "../../value";
import { Solution } from "../../solution";
import { Closure } from "../closure";
export declare class FnValue extends Value {
    ret_cl: Closure;
    constructor(ret_cl: Closure);
    apply(arg: Value): Value;
    readback(ctx: Ctx, t: Value): Core | undefined;
    unify(solution: Solution, that: Value): Solution;
}