import { CelosiaInstance, CelosiaRequest, CelosiaResponse, CelosiaRouter } from './';
export type ExtensionHandler<T, Args extends any[], Return> = (extended: T, ...args: Args) => Return;
export type CelosiaInstanceExtensionHandler<Args extends any[] = any[], Return = void> = ExtensionHandler<CelosiaInstance<boolean>, Args, Return>;
export type CelosiaRouterExtensionHandler<Args extends any[] = any[], Return = void> = ExtensionHandler<CelosiaRouter<boolean>, Args, Return>;
export type CelosiaRequestExtensionHandler<Args extends any[] = any[], Return = void> = ExtensionHandler<CelosiaRequest<any>, Args, Return>;
export type CelosiaResponseExtensionHandler<Args extends any[] = any[], Return = void> = ExtensionHandler<CelosiaResponse<any>, Args, Return>;
export type TransformExtensionHandlerToExtensionType<Handler extends ExtensionHandler<any, any, any>> = Handler extends ExtensionHandler<any, infer Args, infer Return> ? (...args: Args) => Return : never;
export declare class ExtensionsRegistryClass {
    private celosiaInstanceExtensionsHandler;
    private celosiaRouterExtensionsHandler;
    private celosiaRequestExtensionsHandler;
    private celosiaResponseExtensionsHandler;
    /**
     * Register a new extension for CelosiaInstance.
     *
     * Throws `DuplicateExtensionError` when a key has been registered.
     */
    registerCelosiaInstanceExtension(key: string | symbol, handler: CelosiaInstanceExtensionHandler): void;
    /**
     * Remove an extension for CelosiaInstance.
     *
     * Throws `InvalidExtensionError` when a key has not been registered.
     */
    removeCelosiaInstanceExtension(key: string | symbol): void;
    /**
     * Get a registered extension for CelosiaInstance.
     */
    getCelosiaInstanceExtension(key: string | symbol): CelosiaInstanceExtensionHandler | undefined;
    /**
     * Register a new extension for CelosiaRouter.
     *
     * Throws `DuplicateExtensionError` when a key has been registered.
     */
    registerCelosiaRouterExtension(key: string | symbol, handler: CelosiaRouterExtensionHandler): void;
    /**
     * Remove an extension for CelosiaRouter.
     *
     * Throws `InvalidExtensionError` when a key has not been registered.
     */
    removeCelosiaRouterExtension(key: string | symbol): void;
    /**
     * Get a registered extension for CelosiaRouter.
     */
    getCelosiaRouterExtension(key: string | symbol): CelosiaRouterExtensionHandler | undefined;
    /**
     * Register a new extension for CelosiaRequest.
     *
     * Throws `DuplicateExtensionError` when a key has been registered.
     */
    registerCelosiaRequestExtension(key: string | symbol, handler: CelosiaRequestExtensionHandler): void;
    /**
     * Remove an extension for CelosiaRequest.
     *
     * Throws `InvalidExtensionError` when a key has not been registered.
     */
    removeCelosiaRequestExtension(key: string | symbol): void;
    /**
     * Get a registered extension for CelosiaRequest.
     */
    getCelosiaRequestExtension(key: string | symbol): CelosiaRequestExtensionHandler | undefined;
    /**
     * Register a new extension for CelosiaResponse.
     *
     * Throws `DuplicateExtensionError` when a key has been registered.
     */
    registerCelosiaResponseExtension(key: string | symbol, handler: CelosiaResponseExtensionHandler): void;
    /**
     * Remove an extension for CelosiaResponse.
     *
     * Throws `InvalidExtensionError` when a key has not been registered.
     */
    removeCelosiaResponseExtension(key: string | symbol): void;
    /**
     * Get a registered extension for CelosiaResponse.
     */
    getCelosiaResponseExtension(key: string | symbol): CelosiaResponseExtensionHandler | undefined;
}
declare const ExtensionsRegistry: ExtensionsRegistryClass;
export default ExtensionsRegistry;