import 'reflect-metadata';
import { AbstractType, Type } from '../type';
import { AppServiceInfo } from './appServiceInfo';
import { AppServiceMetadata } from './appServiceMetadata';
/**
 * Registry for the application service information.
 *
 * @export
 * @class AppServiceInfoRegistry
 */
export declare class AppServiceInfoRegistry {
    private static readonly _serviceContractKey;
    private static readonly _serviceMetadataKey;
    private static _instance;
    /**
     * Gets the static instance of the registry.
     *
     * @static
     * @memberof AppServiceInfoRegistry
     */
    static get Instance(): AppServiceInfoRegistry;
    private readonly _serviceContracts;
    private readonly _services;
    /**
     * Creates an instance of AppServiceInfoRegistry.
     * @memberof AppServiceInfoRegistry
     */
    constructor();
    /**
     * Gets an iterator over service contracts.
     *
     * @returns {IterableIterator<AppServiceInfo>} The iterator over service contracts.
     * @memberof AppServiceInfoRegistry
     */
    get serviceContracts(): IterableIterator<AppServiceInfo>;
    /**
     * Gets an iterator of services.
     *
     * @readonly
     * @type {IterableIterator<AppServiceMetadata>} The iterator over services.
     * @memberof AppServiceInfoRegistry
     */
    get services(): IterableIterator<AppServiceMetadata<any>>;
    /**
     * Registers the provided type as a service contract.
     *
     * @static
     * @param {AbstractType} type The type to be registered.
     * @param {AppServiceInfo} appServiceInfo The service information.
     * @memberof AppServiceInfoRegistry
     */
    registerServiceContract(type: AbstractType, appServiceInfo: AppServiceInfo): this;
    /**
     * Registers the provided type as a service type.
     *
     * @static
     * @param {Type<T>} type The type to be registered.
     * @param {AppServiceMetadata} [metadata] Optional. The service metadata.
     * @memberof AppServiceInfoRegistry
     */
    registerService<T>(type: Type<T>, metadata?: AppServiceMetadata<T>): this;
    /**
     * Gets the service contract from the provided type, if possible.
     *
     * @param {AbstractType} type The type assumed to be a service contract or a service type.
     * @returns {(AppServiceInfo | null)} The AppServiceInfo instance or null, if the type is not a service contract.
     * @memberof AppServiceInfoRegistry
     */
    getServiceContract(type: AbstractType): AppServiceInfo | null;
    /**
     * Gets a value indicating whether a type is a service contract.
     *
     * @param {AbstractType} type The type assumed to be a service contract.
     * @returns {boolean}
     * @memberof AppServiceInfoRegistry
     */
    isServiceContract(type: AbstractType): boolean;
    /**
     * Gets the service metadata from the provided type, if possible.
     *
     * @param {AbstractType} type The type assumed to be a service type.
     * @returns {(AppServiceMetadata | null)}
     * @memberof AppServiceInfoRegistry
     */
    getServiceMetadata(type: AbstractType): AppServiceMetadata<any> | null;
    /**
     * Gets a value indicating whether a type is a service.
     *
     * @param {AbstractType} type
     * @returns {boolean}
     * @memberof AppServiceInfoRegistry
     */
    isService(type: AbstractType): boolean;
    private _getContractOfService;
}