Working on a project and don’t want to or can’t install ESLint as a devDependency in your package.json? or maybe you just want ESLint to work on all of your projects instantly without all of the per app configuration. The steps described below will help you.

Before starting, ensure you have Node.js installed along with npm (which should come packaged with your Node install).

1. Install ESLint Globally

   npm i -g eslint
   

2. Navigate to your home folder.

   On Linux: cd to or type ~/ in your file explorer of choice to get to your home folder.

   On Windows: Go to C:\Users folder in explorer, then enter the folder with your username.

3. Create your .eslintrc.json file in your home folder and add your desired eslint config to it in JSON.

   // Example JSON config
   {
     "env": {
         "browser": true,
         "es2021": true
     },
     "extends": "eslint:recommended",
     "parserOptions": {
         "ecmaVersion": "latest",
         "sourceType": "module"
     }
   }
   

4. Now you can lint your files

   eslint lintmepls.js
   

5. (Optional) Install ESLint extension for VSCode

   Go to the extensions tab, type in ESLint and download the one by Microsoft.

   Extension Links:

   • Open VSX: https://open-vsx.org/extension/dbaeumer/vscode-eslint
   • Visual Studio Marketplace: https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint

• ESLint playground: https://eslint.org/play/
• More on config files: https://eslint.org/docs/latest/use/configure/configuration-files