This repo is an example of how to use Vite to create a nice manual testing environment when developing React components, and also how to use Vite to bundle and publish those components in multiple formats.
The actual code/plugins/components you want to publish should go in src.
A Vite-powered demo/test environment is in tests/demo/src. Run npm run dev to serve the test app at localhost:3000. The Vite app can be configured via vite.config.ts.
Add new test pages by adding TSX files to the tests/demo/src/pages directory. Each file's default export should be a React component for that page. Page-based routing is powered by vite-plugin-pages.
TailwindCSS is supported in the test app via the Play CDN build (link tag in index.html).
For more automated in-browser testing, my go-to is to write tests with uvu, using Playwright or Puppeteer to visit locally served pages. I npm run dev before running a test suite that needs browser access. Plenty of examples in this repo: https://github.com/baleada/vue-features.
Run npm run build to compile TypeScript and bundle with Vite, outputting multiple formats to lib. Customize formats and other things via vite.lib.config.ts, and customize TypeScript compilation via tsconfig.lib.json.
.npmignore is set up to include JS and TS files in the lib and types directories when you publish to NPM.