Want to contribute to React Virtuoso? You will encounter a state management you are not familiar with - it's implemented using URX. Check the examples and the conceptual docs to get the gist of it.
Virtuoso has an extensive unit/e2e test suite. To run the unit tests, use npm run test. An end-to-end browser-based test suite is runnable with npm run e2e.
A convenient way to debug something is to preview the test cases in the browser.
To do that, run npm run browse-examples - it will open a simple UI that lets you browse the components in the e2e folder.
The documentation site is built with docusaurus and the content is available in the site/docs directory.
The API reference is generated from the doc comments in src/components.tsx.