Function checkoutVersion

src/modules/Module.js:291–327

(git, version, opts)

};

function checkoutVersion(git, version, opts) {
  return git
    .listChanges()
    .then(function (changes) {
      var untracked = changes.filter(function (change) {
        return change.code === '??';
      });

      if (untracked.length) {
        logger.warn('Your module has files we don\'t recognize in it. This',
          'is normally ok, but in some cases it can prevent devkit from',
          'updating your module. If an error occurs, you should consider',
          'removing these files and then running this command again:\n'
          + untracked
            .map(function (change) {
              return change.filename;
            })
            .join('\n\t'),
          '\n(' + git.path + ')');
      }

      // ignore untracked files
      var modified = changes.filter(function (change) {
        return change.code !== '??';
      });

      if (modified.length && !opts.unsafe) {
        throw new ModifiedTreeError(git.path, changes);
      }

      return git
        .checkoutRef(version)
        .catch(function (e) {
          throw new CheckoutError(path.basename(git.path), version, e.stderr);
        });
    });
}

Module.runInstallScripts = function runInstallScripts (modulePath, cb) {
  logger.log('running install scripts...');