Method command

lib/command.js:156–181

* Define a command. * * There are two styles of command: pay attention to where to put the description. * * @example * // Command implemented using action handler (description is supplied separately to `.command`) * program * .command('clone [destination]') * .de

(nameAndArgs, actionOptsOrExecDesc, execOpts)

   */

  command(nameAndArgs, actionOptsOrExecDesc, execOpts) {
    let desc = actionOptsOrExecDesc;
    let opts = execOpts;
    if (typeof desc === 'object' && desc !== null) {
      opts = desc;
      desc = null;
    }
    opts = opts || {};
    const [, name, args] = nameAndArgs.match(/([^ ]+) *(.*)/);

    const cmd = this.createCommand(name);
    if (desc) {
      cmd.description(desc);
      cmd._executableHandler = true;
    }
    if (opts.isDefault) this._defaultCommandName = cmd._name;
    cmd._hidden = !!(opts.noHelp || opts.hidden); // noHelp is deprecated old name for hidden
    cmd._executableFile = opts.executableFile || null; // Custom name for executable file, set missing to null to match constructor
    if (args) cmd.arguments(args);
    this._registerCommand(cmd);
    cmd.parent = this;
    cmd.copyInheritedSettings(this);

    if (desc) return this;
    return cmd;
  }

  /**
   * Factory routine to create a new unattached command.