Question 1

When should I use Webpack vs Vite?

Accepted Answer

Webpack is ideal for large enterprise projects requiring complex build configurations, monorepos, and Module Federation. Vite suits new projects prioritizing development speed. For production systems already on Webpack, migration costs often outweigh speed gains.

Question 2

What is Module Federation and why does it matter?

Accepted Answer

Module Federation (MF) allows sharing code between independent applications at runtime, enabling micro-frontends and shared component libraries. It's one of Webpack's killer features that keeps it relevant in large organizations.

Question 3

How do I optimize bundle size with Webpack?

Accepted Answer

Use webpack-bundle-analyzer to visualize bundles, enable tree shaking (ES modules only), implement code splitting for routes, enable caching, externalize large dependencies, and use MiniCssExtractPlugin for CSS optimization.

Question 4

What's the difference between entry, output, and loaders?

Accepted Answer

Entry points define starting files, output specifies bundle destination. Loaders transform source files (CSS, TypeScript, images) into JavaScript that Webpack understands. Plugins extend Webpack's capabilities for tasks loaders can't handle.

Question 5

How do I debug Webpack configuration issues?

Accepted Answer

Use webpack --mode=development --stats=detailed to inspect build analysis, enable source maps for production, use webpack-bundle-analyzer for size insights, and check webpack.config.js syntax carefully.

Question 6

Can I use Webpack 5 with older projects?

Accepted Answer

Yes, Webpack 5 maintains backwards compatibility with most Webpack 4 configurations. However, test thoroughly as Module Federation and persistent caching are new features requiring explicit opt-in.

Question 7

What's persistent caching and why enable it?

Accepted Answer

Persistent caching stores build artifacts between builds, enabling faster rebuilds by reusing unchanged modules. Webpack 5 implements smart caching that dramatically improves CI/CD pipeline performance.

प्रदेश	ज्युनियर	मध्यम	सीनियर
USA	$75k	$120k	$160k
UK	£55k	£85k	£120k
EU	€45k	€70k	€100k
CANADA	C$70k	C$110k	C$150k

Webpack

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