declare abstract class InternalKey {
    abstract readonly kind: 'singleton' | 'group';
    abstract readonly id: string;
}
/**
 * Key for singleton service T.
 */
export declare class ServiceKey<T> extends InternalKey {
    readonly id: string;
    readonly kind = "singleton";
    constructor(id: string);
}
/**
 * Key for group of service T.
 */
export declare class GroupServiceKey<T> extends InternalKey {
    readonly id: string;
    readonly kind = "group";
    constructor(id: string);
}
export type AllServiceKeys<T> = ServiceKey<T> | GroupServiceKey<T>;
export declare class ServiceProvider {
    private _container;
    add<T>(key: ServiceKey<T>, value: T | undefined): void;
    add<T>(key: GroupServiceKey<T>, value: T): void;
    remove<T>(key: ServiceKey<T>): void;
    remove<T>(key: GroupServiceKey<T>, value: T): void;
    tryGet<T>(key: ServiceKey<T>): T | undefined;
    tryGet<T>(key: GroupServiceKey<T>): readonly T[] | undefined;
    get<T>(key: ServiceKey<T>): T;
    get<T>(key: GroupServiceKey<T>): readonly T[];
    clone(): ServiceProvider;
    dispose(): void;
    private _addGroupService;
    private _removeGroupService;
}
export {};