/* monkey-patch console.log to prefix with file/line-number */
if (process.env['LOG_LINE']) {
  let cwd = process.cwd(),
    cwdRe = new RegExp("^[^/]*" + cwd.replace("/", "\\/") + "\/([^:]*:[0-9]*).*$");
  [ "log", "warn", "error" ].forEach(function(method: string) {
    (console as any)[method] = (function () {
      let orig = (console as any)[method];
      return function (this: any, ...args: any[]) {
        function getErrorObject(): Error {
          try {
            throw Error('');
          } catch (err) {
            return err as Error;
          }
        }

        let err = getErrorObject(),
          caller_line = err.stack?.split("\n")[3] || '',
          prefixedArgs = [caller_line.replace(cwdRe, "$1 -")];

        /* arguments.unshift() doesn't exist... */
        prefixedArgs.push(...args);

        orig.apply(this, prefixedArgs);
      };
    })();
  });
}