import { UnificationEnvironment } from "../logic";
import { CrochetValue } from "../primitives";
import { CrochetModule } from "./module";
export declare class Environment {
    readonly parent: Environment | null;
    readonly raw_module: CrochetModule | null;
    readonly raw_receiver: CrochetValue | null;
    readonly bindings: Map<string, CrochetValue>;
    constructor(parent: Environment | null, raw_module: CrochetModule | null, raw_receiver: CrochetValue | null);
    get receiver(): CrochetValue;
    get module(): CrochetModule;
    has(name: string): boolean;
    try_lookup(name: string): CrochetValue | null;
    lookup(name: string): CrochetValue;
    define(name: string, value: CrochetValue): void;
    define_all(bindings: Map<string, CrochetValue>): void;
    lookup_all(names: string[]): Map<string, CrochetValue>;
    extend_with_unification(env: UnificationEnvironment): Environment;
    clone(): Environment;
    clone_with_receiver(receiver: CrochetValue | null): Environment;
    clone_with_module(module: CrochetModule | null): Environment;
}