安装启动项目时：Module build failed: Error: Cannot find module 'node-sass'

安装启动web端项目

安装cnpm

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

或者设置下载仓库为淘宝镜像

npm config set registry http://registry.npm.taobao.org/

eg:

C:\Users\x1c>npm config set registry http://registry.npm.taobao.org/

C:\Users\x1c>npm config list
; cli configs
metrics-registry = "http://registry.npm.taobao.org/"
scope = ""
user-agent = "npm/6.5.0 node/v11.9.0 win32 x64"

; userconfig C:\Users\x1c\.npmrc
cache = "D:\\Environments\\nodejs\\node_cache"
disturl = "https://npm.taobao.org/dist"
prefix = "D:\\Environments\\nodejs\\node_global"
python = "C:\\Users\\x1c\\.windows-build-tools\\python27\\python.exe"
registry = "http://registry.npm.taobao.org/"

; node bin location = D:\Environments\nodejs\node.exe
; cwd = C:\Users\x1c
; HOME = C:\Users\x1c
; "npm config ls -l" to show all defaults.


C:\Users\x1c>

安装完出现以下错误 Module build failed: Error: Cannot find module ‘node-sass’

Module build failed: Error: Cannot find module 'node-sass'

错误表示找不到模块node-sass

我的node、npm版本

C:\Users\x1c>node -v
v11.9.0

C:\Users\x1c>npm -v
6.5.0

C:\Users\x1c>

错误信息是表示找不到node-sass模块，我重新安装下吧。

解决办法执行

cnpm install node-sass

若安装过程中出现Permission denied错误，则用如下命令安装：

npm install node-sass --unsafe-perm=true --allow-root

或者直接npm

npm install node-sass

我的安装好了

cnpm install node-sass
√ Installed 1 packages
√ Linked 0 latest versions
√ Run 0 scripts
√ All packages installed (used 237ms(network 229ms), speed 50.5kB/s, json 1(11.56kB), tarball 0B)

重新 cnpm install 整个项目再运行整个项目吧，可以了

cnpm install npm run dev

F:\project\gmall\mall-admin-web>cnpm install
√ Installed 49 packages
√ Linked 0 latest versions
√ Run 0 scripts
√ All packages installed (used 48ms(network 40ms), speed 0B/s, json 0(0B), tarball 0B)

F:\project\gmall\mall-admin-web>npm run dev

> [email protected] dev F:\project\gmall\mall-admin-web
> webpack-dev-server --inline --progress --config build/webpack.dev.conf.js

 13% building modules 27/31 modules 4 active ...dules\[email protected]@vue\dist\vue.esm.js
 ....
  DONE  Compiled successfully in 27146ms                                                                         00:55:26

 I  Your application is running here: http://localhost:8090