export interface CommandUtil {
  returnErrorStringOrMessage(err: Error, message: string);
  logErrors(errs: Error[], writeErrorToConsole?: boolean): string[];
  logError(err: Error, writeErrorToConsole?: boolean): string;
  processExitWithError(err: Error, nonErrorMessage?: string);
  processExit(exitCode?: number, msg?: string);
  callbackIfError(cb: (err: Error, result: any)=>void,
                  err?: Error,
                  result?: any): boolean;
  logAndCallback(msg: string,
                 cb: (err: Error, result: any)=>void,
                 err?: Error,
                 result?: any): boolean;
  log(msg: string);
  error(msg: string);
  stdoutWrite(msg:string);
  quiet:boolean;
}