import type { IDisposable } from '../functions/disposer.js';
import type { IValueModel } from '../models/types.js';
interface ICtor<T extends IDisposable = IDisposable> {
    new (id?: number): T;
}
export interface StaticSingleton<TClass extends IDisposable> extends ICtor<TClass> {
    readonly ID: number;
    readonly HasInstance: boolean;
    Destroy(): void;
    readonly BaseClass: ICtor<TClass>;
    readonly Instance: InstanceType<ICtor<TClass>>;
    Extend<TExtended extends TClass>(Child: ICtor<TExtended>): StaticSingleton<TExtended>;
}
type Extensions = {
    onDestroyed?: () => void;
    createId?: () => IValueModel<number>;
};
export declare function createSingleton<T extends IDisposable>(Ctor: ICtor<T>, extensions?: Extensions): StaticSingleton<T>;
export {};