Method unknownCommand

lib/command.js:2176–2194

* Unknown command. * * @private

()

   */

  unknownCommand() {
    const unknownName = this.args[0];
    let suggestion = '';

    if (this._showSuggestionAfterError) {
      const candidateNames = [];
      this.createHelp()
        .visibleCommands(this)
        .forEach((command) => {
          candidateNames.push(command.name());
          // just visible alias
          if (command.alias()) candidateNames.push(command.alias());
        });
      suggestion = suggestSimilar(unknownName, candidateNames);
    }

    const message = `error: unknown command '${unknownName}'${suggestion}`;
    this.error(message, { code: 'commander.unknownCommand' });
  }

  /**
   * Get or set the program version.