import { Expression } from "../ir";
import { State } from "../vm";
import { Environment } from "../world";
import { CrochetType, TCrochetAny, CrochetValue } from "./0-core";
export declare class CrochetThunk extends CrochetValue {
    readonly expr: Expression;
    readonly env: Environment;
    get type(): TCrochetThunk;
    private value;
    constructor(expr: Expression, env: Environment);
    force(state0: State): Generator<import("../vm").PushExpr, CrochetValue, unknown>;
    equals(other: CrochetValue): boolean;
    to_js(): this;
    to_text(): string;
    get is_forced(): boolean;
    get forced_value(): CrochetValue;
}
export declare class TCrochetThunk extends CrochetType {
    readonly parent: TCrochetAny;
    readonly type_name = "thunk";
    static type: TCrochetThunk;
}