Build test-lib.cjs (CommonJS) and test-lib.js (ESM) in one go:
npm run build
Develop library in the browser, with hot reload:
npm run dev
Try the library in Node:
$ node
> const {hello} = await import('./dist/test-lib.cjs')
undefined
> hello()
hello world
This example was build by following Vite guide:
npm create vite@latest test-lib -- --template vanilla-ts
And then by adding "Library Mode" config, with few small tweaks.