Method toYarnArgs

lib/tasks/npm-task.js:251–294

(command, options)

  }

  toYarnArgs(command, options) {
    let args = [];

    if (command === 'install') {
      if (options.save) {
        args.push('add');
      } else if (options['save-dev']) {
        args.push('add', '--dev');
      } else if (options.packages) {
        throw new Error(`npm command "${command} ${options.packages.join(' ')}" can not be translated to Yarn command`);
      } else {
        args.push('install');
      }

      if (options['save-exact']) {
        args.push('--exact');
      }

      if ('optional' in options && !options.optional) {
        args.push('--ignore-optional');
      }
    } else if (command === 'uninstall') {
      args.push('remove');
    } else {
      throw new Error(`npm command "${command}" can not be translated to Yarn command`);
    }

    if (options.verbose) {
      args.push('--verbose');
    }

    if (options.packages) {
      args = args.concat(options.packages);
    }

    // Yarn v2 defaults to non-interactive
    // with an optional -i flag

    if (semver.lt(this.packageManager.version, '2.0.0')) {
      args.push('--non-interactive');
    }

    return args;
  }

  toPNPMArgs(command, options) {
    let args = [];