sherrydeMacBook-Air:webApp sherry$ gulp lib

/Users/sherry/Desktop/webApp/gulpfile.js:1

(function (exports, require, module, __filename, __dirname) { 

SyntaxError: Invalid or unexpected token

    at createScript (vm.js:53:10)

    at Object.runInThisContext (vm.js:95:10)

    at Module._compile (module.js:543:28)

    at Object.Module._extensions..js (module.js:580:10)

    at Module.load (module.js:488:32)

    at tryModuleLoad (module.js:447:12)

    at Function.Module._load (module.js:439:3)

    at Module.require (module.js:498:17)

    at require (internal/module.js:20:19)

    at Liftoff.handleArguments (/usr/local/lib/node_modules/gulp/bin/gulp.js:116:3)

源代码如下

var gulp = require('gulp');

var $ = require('gulp-load-plugins');

var open = require('open');

var app = {

  srcPath:'src/',//源代码位置

  devPath:'build/',//开发环境

  prdPath:'dist/'//部署文件

};

//bower第三方依赖 定义一个函数，读取 bower_components目录下的子文件进行深度遍历 bower_components/**/*.js

//拷贝至开发环境中和生产环境中

gulp.task('lib',function(){

  gulp.src('bower_components/**/*.js')

  .pipe(gulp.dest(app.devPath+'vebdor'))

  .pipe(gulp.dest(app.prdPath+'vebdor'));

})；

检查了好久，和老师写的代码一样啊（除了路径的vendor我写成了vebdor），找不到报错的原因。。。标点符号都重新用英文的打了一遍

求指导