import { Exp, ExpMeta } from "../../exp";
import { Core } from "../../core";
import { Ctx } from "../../ctx";
import { Value } from "../../value";
export declare class Ap extends Exp {
    meta: ExpMeta;
    target: Exp;
    arg: Exp;
    constructor(target: Exp, arg: Exp, meta: ExpMeta);
    free_names(bound_names: Set<string>): Set<string>;
    subst(name: string, exp: Exp): Ap;
    infer(ctx: Ctx): {
        t: Value;
        core: Core;
    };
    private infer_for_pi;
    private infer_for_cls;
    ap_args_repr(): Array<string>;
    ap_target_repr(): string;
    repr(): string;
}