Function validateAndRun

lib/models/command.js:270–324

@method validateAndRun @return {Promise}

(args)

    @return {Promise}
  */
  async validateAndRun(args) {
    let commandOptions = this.parseArgs(args);

    // If the `help` option was passed, resolve with `callHelp` to call the `help` command:
    if (commandOptions && (commandOptions.options.help || commandOptions.options.h)) {
      logger.info(`${this.name} called with help option`);

      return 'callHelp';
    }

    if (commandOptions === null) {
      throw new SilentError();
    }

    if (this.works === 'outsideProject' && this.isWithinProject) {
      throw new SilentError(`You cannot use the ${chalk.green(this.name)} command inside an ember-cli project.`);
    }

    if (this.works === 'insideProject') {
      if (!this.project.hasDependencies()) {
        if (!this.isWithinProject && !this.project.isEmberCLIAddon()) {
          throw new SilentError(
            `You have to be inside an ember-cli project to use the ${chalk.green(this.name)} command.`
          );
        }

        let installCommand = await determineInstallCommand(this.project.root);

        throw new SilentError(
          `Required packages are missing, run \`${installCommand}\` from this directory to install them.`
        );
      }
    }

    let detector = new WatchDetector({
      ui: this.ui,
      childProcess: { execSync },
      fs,
      watchmanSupportsPlatform: /^win/.test(process.platform),
      cache,
      root: this.project.root,
    });

    let options = commandOptions.options;

    if (this.hasOption('watcher') || process.env.EMBROIDER_PREBUILD) {
      // Do stuff to try and provide a good experience when it comes to file watching:
      let watchPreference = detector.findBestWatcherOption(options);

      this.project._watchmanInfo = watchPreference.watchmanInfo;
      options.watcher = watchPreference.watcher;
    }

    return this.run(options, commandOptions.args);
  },

  /**
    Reports if the given command has a command line option by a given name