import { Core, AlphaCtx } from "../../core";
import { Env } from "../../env";
import { Value } from "../../value";
export declare class ApCore extends Core {
    target: Core;
    arg: Core;
    constructor(target: Core, arg: Core);
    evaluate(env: Env): Value;
    ap_args_repr(): Array<string>;
    ap_target_repr(): string;
    repr(): string;
    alpha_repr(ctx: AlphaCtx): string;
    static apply(target: Value, arg: Value): Value;
}