解决Module build failed: Error: Cannot find module ‘node-sass‘Require stack

 in ./src/components/main/mainFirm.vue

Module build failed: Error: Cannot find module 'node-sass'
Require stack:
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\sass-loader\lib\loader.js
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\loader-runner\lib\loadLoader.js
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\loader-runner\lib\LoaderRunner.js
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\webpack\lib\NormalModule.js
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\webpack\lib\NormalModuleFactory.js
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\webpack\lib\Compiler.js
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\webpack\lib\webpack.js
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\webpack-dev-server\lib\Server.js
- C:\Users\Demo\Desktop\身份\YouQiu\node_modules\webpack-dev-server\bin\webpack-dev-server.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:889:15)
    at Function.Module._load (internal/modules/cjs/loader.js:745:27)
    at Module.require (internal/modules/cjs/loader.js:961:19)
    at require (internal/modules/cjs/helpers.js:92:18)
    at Object.sassLoader (C:\Users\Demo\Desktop\身份\YouQiu\node_modules\sass-loader\lib\loader.js:46:72)

 @ ./node_modules/vue-style-loader!./node_modules/css-loader?{"sourceMap":true}!./node_modules/vue-loader/lib/style-compiler?{"vue":true,"id":"data-v-9809e666","scoped":true,"hasInlineConfig":false}!./node_modules/sass-loader/lib/loader.js?{"sourceMap":true}!./node_modul
es/vue-loader/lib/selector.js?type=styles&index=0!./src/components/main/mainFirm.vue 4:14-387 13:3-17:5 14:22-395
 @ ./src/components/main/mainFirm.vue
 @ ./src/router/index.js
 @ ./src/main.js
 @ multi (webpack)-dev-server/client?http://localhost:2727 webpack/hot/dev-server ./src/main.js

解决 方法

npm install --save-dev node-sass --registry=https://registry.npm.taobao.org --disturl=https://npm.taobao.org/dist --sass-binary-site=http://npm.taobao.org/mirrors/node-sass

亲测有效