/**
 * The "@inject" decorator uses Reflection to inspect the dependencies of a class
 * or a method and defines them as metadata on the class for the container to
 * discover them.
 *
 * @example
 * ```ts
 * @inject()
 * class UsersController {
 *   constructor(private database: Database) {}
 * }
 * ```
 *
 * @example
 * ```ts
 * class UsersController {
 *   @inject()
 *   async index(request: Request, response: Response) {
 *     // Method with dependency injection
 *   }
 * }
 * ```
 */
export declare function inject(): {
    <C extends Function>(target: C): void;
    (target: any, propertyKey: string | symbol): void;
};