/**
 * Resolved by the `ConfigService` provider of `ConfigModule.forRoot()` once
 * the configuration is loaded (including async "load" factories).
 */
export interface ConfigLoadedSignal {
    promise: Promise<void>;
    resolve: () => void;
}
/**
 * Imported by `ConfigModule.forRoot()` only, so that a `ConfigModule` import
 * without any `forRoot()` call doesn't wait for a signal that never comes.
 */
export declare class ConfigLoadedModule {
}