code: function exec(command, options) {
      return new PromiseWithEvents_1.PromiseWithEvents(function (resolve, reject, eventEmitter) {
          var childProcess = cp.exec(command, options, function (err, stdout, stderr) {
              if (err) {
                  reject(err);
              }
              else {
                  resolve({
                      stdout: stdout.toString(),
                      stderr: stderr.toString()
                  });
              }
          });
          process.nextTick(function () { return eventEmitter.emit('process', childProcess); });
      });
  }
docs: Runs a command in a shell and buffers the output.
  @param command {string} - The command
  @param options {ExecOptions} - Options
  @returns {PromiseWithEvents<ExecResult>}
  @see {@link https://nodejs.org/api/child_process.html#child_process_child_process_exec_command_options_callback}