What is ESLint (Linter) ESLint is a static code analysis tool for identifying and fixing problems in JavaScript/TypeScript code. It helps you write clean, consistent, and bug-free code by enforcing a set of rules.

  1. Helps identify and fix problems in JavaScript code.
  2. Ensure consistent, error-free code that’s easy to read and maintain (style guide).
  3. Extensible : Add additional functionality (plugins).
  4. Sharable : create reusable configurations (presets). Why Use ESLint? Using ESLint is essential in modern JavaScript development because it helps you write cleaner, error-free, and consistent code. Here’s why you should use ESLint:
  5. Detects Bugs Early: It catches common programming mistakes (like undeclared variables or typos) before you even run your code.
  6. Ensures Code Consistency: ESLint enforces a uniform coding style, making your code easier to read and maintain—especially important in team projects.
  7. Improves Code Quality: It highlights code that doesn’t follow best practices, encouraging better structure and logic.
  8. Customizable Rules: You can tailor ESLint rules to fit your project’s or team’s specific coding standards.
  9. Editor & Tool Integration: ESLint integrates with pop

✅ Phase 1: ESLint + Pre-commit Hooks using Husky & lint-staged

We'll first test this in a sample repo (e.g., eslint-precommit-demo), and then replicate in the actual project.

✅ Step 1: Create a Sample Repo on GitHub

  1. Go to GitHub → Click New Repository
  2. Name it: eslint-precommit-demo
  3. Initialize with README.md
  4. Clone locally:
bash
CopyEdit
git clone <https://github.com/your-username/eslint-precommit-demo.git>
cd eslint-precommit-demo