feat(test): add test script to test the output of theme

[moshams272]

Summary

This PR introduces snapshot testing to ensure that our theme generates the output we need. We use snapshot tool from node:test with the same pipeline using getTypeDocConfig.

How to use

Run the test:

npm run test

To update the snapshot after modifying the fixture or theme:

node --test --test-update-snapshots tests/**/*.test.mjs

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Project	Deployment	Actions	Updated (UTC)
webpack-doc-kit	Ready	Preview	Aug 3, 2026 7:38pm

[ryzrr]

also can we add the test in the CI, wdyt ?

[moshams272]

Oh it fails 😂. it worked on my machine, WIP.

[moshams272]

Ok, it works now. The problem is when we import typeDocConfig, the Module Record try to record the sources and it's a top-level await, so it execute and there's no .cache/webpack there so it crashed.

Solving that with using lazy evaluation by isolating it in function.