import { Destroyable } from '../utils/Destroyable';
import { Signal } from '../signal/Signal';
export declare class Realm extends Destroyable {
    readonly scope: any;
    readonly signals: Map<string, Signal>;
    constructor(scope: any);
    /**
     * Set signal into realm.
     * @param signal The signal instance
     */
    setSignal(signal: Signal): void;
    /**
     * If signal is existing in realm, it will be returns `true`, otherwise `false`.
     * @param key Signal's key
     */
    hasSignal(key: string): boolean;
    /**
     * Return a signal instance if it already exists. Otherwise, it returns `undefined`.
     * @param key Signal's key
     */
    getSignal(key: string): Signal | undefined;
    /**
     * Destroy this realm instance. It will be removed from realm collections.
     * @param reason Destruction reason
     */
    destroy(reason: string): void;
}