export type ServiceConfig = {
    name: string;
    url: string;
    prefix: string;
    versionUrl?: string;
    _version?: string;
    upload?: {
        maxFileSize: number;
        maxFiles: number;
    };
};
export type Config = {
    version?: string;
    reloadInterval?: number;
    list: ServiceConfig[];
    shouldRenderPlayground?: boolean;
    allowedQueriesAndMutations: string[];
    shouldExposeIntrospetion?: boolean;
    dangerouslyExposeEverything?: boolean;
};
export type Options = {
    config: Config;
};
export declare const init: (options: Options) => Promise<{
    app: import("express-serve-static-core").Express;
    refresh: () => Promise<void>;
    stop: () => void;
}>;