/**
 * Log errors and mask them if the configuration key "settings.debug" is not true.
 *
 * If "settings.debug" is true, then the error is returned.
 * If it is not, then an error whose message is "Internal Server Error" is returned.
 *
 * @export
 * @param {*} err - The error thrown or rejected in the resolver.
 * @returns {*} The error to return to the client.
 */
export declare function maskAndLogError(err: any): any;