vue中安装recorderx v-emoji-picker vue-context-menu vue-dragging失败的解决方法

【现象】

98% after emitting CopyPlugin
 ERROR  Failed to compile with 16 errors17:16:04

These dependencies were not found:

* diff in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/views/create-ques/create-ques-check-out.vue?vue&type=script&lang=js&, ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/views/create-ques/create-ques-check.vue?vue&type=script&lang=js& and 4 others
* pdfjs-dist/es5/build/pdf.js in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./node_modules/vue-pdf/src/vuePdfNoSss.vue?vue&type=script&lang=js&
* worker-loader!pdfjs-dist/es5/build/pdf.worker.js in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./node_modules/vue-pdf/src/vuePdfNoSss.vue?vue&type=script&lang=js&
* pdfjs-dist/es5/web/pdf_viewer in ./node_modules/vue-pdf/src/pdfjsWrapper.js
* recorderx in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/ChatInterface/components/enterBox.vue?vue&type=script&lang=js&, ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/views/create-ques/create-ques-analysis-study.vue?vue&type=script&lang=js& and 1 other
* v-emoji-picker in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/ChatInterface/components/tools.vue?vue&type=script&lang=js&, ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/ChatInterface/components/enterBox.vue?vue&type=script&lang=js&
* vue-context-menu in ./node_modules/cache-loader/dist/cjs.js??ref--12-0!./node_modules/babel-loader/lib!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/views/create-ques/create-ques-analysis-study.vue?vue&type=script&lang=js&
* vue-dragging in ./src/main.js

To install them, you can run: npm install --save diff pdfjs-dist/es5/build/pdf.js worker-loader!pdfjs-dist/es5/build/pdf.worker.js pdfjs-dist/es5/web/pdf_viewer recorderx v-emoji-picker vue-context-menu vue-dragging

【解决方法】

更换为淘宝数据源，具体操作如下：

npm install -g  --registry=https://registry.npm.taobao.org

为了方便开发，我们最好是直接永久使用淘宝的镜像源

直接命令行的设置

 $ npm config set registry https://registry.npm.taobao.org

手动修改设置

 1.打开.npmrc文件（C:\Program Files\nodejs\node_modules\npm\npmrc，没有的话可以使用git命令行建一个( touch .npmrc)，用cmd命令建会报错）
 2.增加 registry =https://registry.npm.taobao.org  即可。

如果需要恢复成原来的官方地址只需要执行如下命令:

 npm config set registry https://registry.npmjs.org

检测是否安装成功：

 npm config get registry