Running ESLint

With your config in place, run ESLint as you normally would.

Lint your code

npx eslint src/

Auto-fix

npx eslint src/ --fix

Add scripts to package.json

For convenience, add these to your package.json:

{
  "scripts": {
    "lint": "eslint src/",
    "lint:fix": "eslint src/ --fix"
  }
}

Then run:

npm run lint
npm run lint:fix

What gets enforced

Out of the box, uglier enforces:

• No semicolons (ASI)
• Double quotes
• 2-space indentation
• No spaces after control keywords (if(x) not if (x))
• Arrow parens only when needed (x => not (x) =>)
• 1TBS brace style
• Mandatory blank lines after control statements
• No internal object spacing ({a: 1} not { a: 1 })
• 80 character max line length
• JSDoc documentation requirements (when using lints-jsdoc)

All of these can be customized — see Customization.