export interface IRegistry {
    /**
     * Adds the extension functions and properties defined by data to the
     * platform. The provided id must be unique.
     * @param id a unique identifier
     * @param data a contribution
     */
    add(id: string, data: any): void;
    /**
     * Returns true iff there is an extension with the provided id.
     * @param id an extension identifier
     */
    knows(id: string): boolean;
    /**
     * Returns the extension functions and properties defined by the specified key or null.
     * @param id an extension identifier
     */
    as<T>(id: string): T;
}
export declare const Registry: IRegistry;