A brief discussion on the corresponding versions of node node-sass sass-loader

Check whether the node-sass and node versions correspond

node -v

The specific corresponding versions are as follows:

Image from https://github.com/sass/node-sass

The node version does not correspond, upgrade or downgrade the node

Use nvm to manage and switch node versions

Install nvm-window https://github.com/coreybutler/nvm-windows. Win10 adds system environment and user environment by default. If the command line cannot use nvm, you need to add the environment yourself

Use the image to find the settings.txt file in the nvm installation directory

node_mirror: https://npm.taobao.org/mirrors/node/
npm_mirror: https://npm.taobao.org/mirrors/npm/

Install and use node.js through nvm
Use the install command in nvm to install different versions of node.js. For example, to install version 12.1.0 of node.js:

nvm install 12.1.0

To switch to a certain version, you can use the use command, such as:

nvm use 12.1.0

After the switch is complete, you can enter node -v and npm -v, and you can see that the version has been switched to the version you want to use.
5. Check the installed node version and the version in use

nvm ls 

node-sass version mismatch

Execute in project environment

npm uninstall node-sass
npm install node-sass@version number --save-dev 

Check if the node-sass and sass-loader versions correspond

The following are some version numbers corresponding to the specific Baidu

sass-loader 4.1.1, node-sass 4.3.0
sass-loader 7.0.3, node-sass 4.7.2
sass-loader 7.3.1, node-sass 4.7.2
sass-loader 7.3.1, node-sass 4.14.1

Execute in project environment

npm uninstall node-sass sass-loader
npm install sass-loader@version numbernode-sass@version number--save-dev //Install the corresponding version

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