import { Exp, ExpMeta } from "../exp";
import { Core } from "../core";
import { Value } from "../value";
import { Ctx } from "../ctx";
export declare class Let extends Exp {
    meta: ExpMeta;
    name: string;
    exp: Exp;
    ret: Exp;
    constructor(name: string, exp: Exp, ret: Exp, meta: ExpMeta);
    free_names(bound_names: Set<string>): Set<string>;
    subst(name: string, exp: Exp): Let;
    infer(ctx: Ctx): {
        t: Value;
        core: Core;
    };
    check(ctx: Ctx, t: Value): Core;
    repr(): string;
}