Modern Tooling
An overview of bundlers, transpilers, linters, and dev servers in modern JS projects.
Short explanation
Tooling like bundlers (Webpack, Rollup, Vite), transpilers (Babel), linters, and formatters help scale JS projects, enable backward compatibility, and improve developer productivity.
Real-world example
Using Vite during development provides fast HMR and a dev server optimized for ES modules, while building with Rollup or Webpack prepares optimized production bundles.
How JS handles it internally
Bundlers analyze module graphs and transform code into bundles or chunks, often applying tree-shaking and code-splitting. Transpilers convert new syntax to compatible equivalents for older runtimes.
FAQ
Q: Do I need a bundler for small projects?
A: Not always — native ES modules and simple setups can work, but bundlers help optimize production performance as apps grow.