之前本地装了 node  和  npm   但是现在 bootstrap  不是到4.0了嘛，不知道有影响不，我的操作步骤是：

1.  npm  install

2. npm install -g @angular/cli

但是报错如下：  我也不知道啥原因，领导说把项目初始化下，可是我不是很懂 ，，辛苦老师了

ERROR in multi script-loader!./node_modules/jquery/dist/jquery.min.js script-loader!./node_modules/bootstrap-tour/build/js/bootstrap-tour.min.js script-loader!./node_modules/tether/dist/js/tether.min.js script-loader!./node_modules/bootstrap/dist/js/bootstrap.min.js script-loader!./node_modules/moment/mo

ment.js script-loader!./node_modules/moment/locale/zh-cn.js script-loader!./node_modules/froala-editor/js/froala_editor.pkgd.min.js script-loader!./node_modules/froala-editor/js/languages/zh_cn.js

Module not found: Error: Can't resolve 'D:\11\world-app\node_modules\tether\dist\js\tether.min.js' in 'D:\11\world-app\node_modules\@angular\cli\models\webpack-configs'

resolve 'D:\11\world-app\node_modules\tether\dist\js\tether.min.js' in 'D:\11\world-app\node_modules\@angular\cli\models\webpack-configs'

  using description file: D:\11\world-app\node_modules\@angular\cli\package.json (relative path: ./models/webpack-configs)

    Field 'browser' doesn't contain a valid alias configuration

  after using description file: D:\11\world-app\node_modules\@angular\cli\package.json (relative path: ./models/webpack-configs)

    using description file: D:\11\world-app\package.json (relative path: ./node_modules/tether/dist/js/tether.min.js)

      no extension

        Field 'browser' doesn't contain a valid alias configuration

        D:\11\world-app\node_modules\tether\dist\js\tether.min.js doesn't exist

      .ts

        Field 'browser' doesn't contain a valid alias configuration

        D:\11\world-app\node_modules\tether\dist\js\tether.min.js.ts doesn't exist

      .js

        Field 'browser' doesn't contain a valid alias configuration

        D:\11\world-app\node_modules\tether\dist\js\tether.min.js.js doesn't exist

      as directory

        D:\11\world-app\node_modules\tether\dist\js\tether.min.js doesn't exist

[D:\11\world-app\node_modules\tether\dist\js\tether.min.js]

[D:\11\world-app\node_modules\tether\dist\js\tether.min.js.ts]

[D:\11\world-app\node_modules\tether\dist\js\tether.min.js.js]

[D:\11\world-app\node_modules\tether\dist\js\tether.min.js]

 @ multi script-loader!./node_modules/jquery/dist/jquery.min.js script-loader!./node_modules/bootstrap-tour/build/js/bootstrap-tour.min.js script-loader!./node_modules/tether/dist/js/tether.min.js script-loader!./node_modules/bootstrap/dist/js/bootstrap.min.js script-loader!./node_modules/moment/moment.j

s script-loader!./node_modules/moment/locale/zh-cn.js script-loader!./node_modules/froala-editor/js/froala_editor.pkgd.min.js script-loader!./node_modules/froala-editor/js/languages/zh_cn.js