eslint-plugin-no-blank-lines-in-function

An ESLint plugin that prevents blank lines inside function bodies to maintain compact, readable code.

Installation

npm install eslint-plugin-no-blank-lines-in-function --save-dev

Usage

Using the recommended configuration

{
  "extends": ["plugin:no-blank-lines-in-function/recommended"]
}

Manual configuration

Add the plugin to your .eslintrc configuration:

{
  "plugins": ["no-blank-lines-in-function"],
  "rules": {
    "no-blank-lines-in-function/no-blank-lines-in-function": "error"
  }
}

Rule Details

This rule disallows blank lines inside function bodies for:

• Function declarations
• Function expressions
• Arrow functions
• Class methods

Examples

Incorrect:

function example() {
  const a = 1;
  
  const b = 2;
  
  return a + b;
}

Correct:

function example() {
  const a = 1;
  const b = 2;
  return a + b;
}

Auto-fixing

This rule supports ESLint's --fix option to automatically remove blank lines inside functions.

eslint --fix your-file.js

Development

# Install dependencies
npm install

# Run tests
npm test

# Run tests in watch mode
npm run test:watch

License

MIT - feel free to use this however you want.