Usage and rules

Integrate ESLint into Your Build Process or Editor

• Integrating with the Command Line:

  • You can run ESLint manually on your project by using the following command:

    npx eslint .  // Check all files in the current directory and subdirectories
    

• Integrating with Build Tools

  • If you’re using build tools like Webpack or Gulp, you can integrate ESLint into your build process to automatically lint your code during the build process.

    • For Webpack: Use the eslint-webpack-plugin to lint your JavaScript files during the build.

    • For Gulp: Use gulp-eslint to run ESLint tasks.

• Integrating with Your Editor

  • VSCode: Install the ESLint extension in VSCode to automatically lint your code as you write it.
  • PHPStorm:

    1. Install ESLint Plugin:

       • Go to Preferences (macOS) or Settings (Windows/Linux) in PhpStorm.

       • Navigate to Plugins and search for ESLint. Click Install and restart PhpStorm.

    2. Configure ESLint:

       • Go to Preferences/Settings > Languages & Frameworks > JavaScript > Code Quality Tools > ESLint.

       • Enable Automatic ESLint configuration or manually point to your .eslintrc file, ensuring ESLint is properly configured.

Override or Add Custom Rules

• You can easily customize ESLint's rules in your .eslintrc configuration file to better suit the specific needs or coding standards of your project.

• Example of Customizing Rules:
  If you want to enforce the use of single quotes for strings and disallow console logs in production, you can add or modify rules in the .eslintrc file:

  {
    "extends": "google",
    "rules": {
      "quotes": ["error", "single"],  // Enforce single quotes for strings
      "no-console": ["error", { "allow": ["warn", "error"] }]  // Allow only console.warn and console.error
    }
  }
  

Summary

• Integrate ESLint into your build process or editor to automatically check your code for style violations and errors.

• Customize ESLint rules by editing the .eslintrc file to override or add rules that fit your project.