‘eslint’ is not recognized as an internal or external command

The eslint module must not be installed into global.

instead, you should install eslint-cli module into global.

So, first install eslint-cli gloablly:

npm -g i eslint-cli

then in the project folder: install eslint locally

npm i eslint --save-dev

Then in the project folder you can run someting like: (on Windows)

eslint .\