Code Splitting

What Is Webpack and Bundling?

Webpack is a module bundler that walks a JavaScript application’s dependency graph starting from an entry file and combines all the modules, along with assets…

What is Lazy Loading?

Lazy loading is the technique of deferring the loading of a resource — an image, a script chunk, or a component — until it is actually needed, instead of loadi…

What Is React Suspense and How Does It Work?

React Suspense is a component that lets you declaratively show a fallback UI, like a spinner, while its children are not yet ready to render because they are w…

What Are Code-Splitting Strategies and Why Do They Matter?

Code splitting breaks a single large JavaScript bundle into smaller chunks that load on demand — by route, by component, or by vendor library — so the browser…

How Do React.lazy and Suspense Enable Code Splitting?

React.lazy() defers loading a component`s code until it is actually rendered, and Suspense lets a parent declare a fallback UI to show while that lazily-loaded…

What Is Webpack Module Federation and How Does It Work?

Module Federation is a Webpack (and now Rspack/Vite-ecosystem) capability that lets separately built and independently deployed JavaScript bundles dynamically…

How Do You Use Bundle Analysis Tools to Optimize JavaScript?

Bundle analysis tools like webpack-bundle-analyzer or source-map-explorer parse a build’s stats output and source maps to render a visual treemap showing exact…