import { Core, AlphaCtx } from "../../core";
import { Env } from "../../env";
import { Value } from "../../value";
export declare class EitherCore extends Core {
    left_t: Core;
    right_t: Core;
    constructor(left_t: Core, right_t: Core);
    evaluate(env: Env): Value;
    repr(): string;
    alpha_repr(ctx: AlphaCtx): string;
}