docs: function installMutations(modules, enclosingFolder) {
    makeFolderLibraryIfNotExist(enclosingFolder);
    if (modules.length === 0) {
      return new Promise(resolve => resolve({}));
    }
  
    return npm.install(modules, {
      cwd: pathToMutations(enclosingFolder),
      save: true
    });
  }