ESLint is a powerful static code analysis tool for identifying and fixing patterns in JavaScript code. It helps enforce consistent coding standards and detect potential errors or bugs.

🔧 Installation

To get started with ESLint, you can install it via npm:

npm install eslint --save-dev

Or download the latest release from the official GitHub repository.

⚙️ Configuration

Create an .eslintrc.js file in your project root with the following basic setup:

module.exports = {
  env: {
    es2021: true
  },
  extends: 'eslint:recommended',
  rules: {
    'no-console': 'warn',
    'no-debugger': 'error'
  }
};

For advanced configurations, check out our configuration guide.

✅ Common Rules

  • no-unused-vars: Warns about unused variables
  • prefer-const: Recommends using const instead of let when possible
  • comma-dangle: Checks for trailing commas in arrays and objects

eslint_icon

ESLint logo

📚 Extension Reading

Explore more about ESLint's features and best practices by visiting our official documentation.