Syntax to define entry points in webpack configuration?

0-2 years experience

1. 1How would you configure webpack to bundle a single‑page app whose source entry file is src/index.js?
2. 2If you add a new file src/admin.js and want it built as a separate bundle, what changes do you make to the entry section of webpack.config.js?
3. 3What happens if you omit the entry field entirely in a webpack config?

2-5 years experience

1. 1Your team added a vendor library that must load before the main app code. How would you adjust the entry configuration to ensure a vendor bundle is created and loaded first?
2. 2After adding a new entry point, the output filenames are colliding. How would you modify the webpack config to generate distinct filenames for each entry?
3. 3During a refactor, the build started failing with 'Module not found' errors for a newly added entry point. Walk me through how you'd debug the entry configuration.

5-8 years experience

1. 1We have a large multi‑page application with dozens of entry points. What strategies would you use in the webpack config to manage entry definitions efficiently and keep build times reasonable?
2. 2Explain how you would set up entry points to support code splitting and shared chunks across multiple pages, and what trade‑offs you consider.
3. 3Our CI pipeline needs to produce separate bundles for client and server rendering. How would you structure the entry configuration to support this dual build while avoiding duplication?

8+ years experience

1. 1Our organization is migrating from a legacy build system to webpack across many micro‑frontends. How would you design a shared entry‑point strategy that balances consistency, independent deployment, and minimal bundle size?
2. 2When scaling to hundreds of entry points, what architectural patterns (e.g., convention‑based entry generation, dynamic imports) would you introduce to keep the webpack config maintainable across teams?
3. 3Discuss the long‑term implications of hard‑coding entry paths versus using a convention‑over‑configuration approach in a monorepo, and how you'd evolve the setup.