Support vite 3

[IanVS]

Hi, I attempted to update a storybook vite example to vite 3 beta, and found that our preact example is failing.

I've created a minimal reproduction at https://github.com/IanVS/vitejs-vite-ccuzee.

Besides the peerDependencies needing an update, I get an error when running a built app (dev works fine). The error is:

Uncaught ReferenceError: require is not defined

Which comes from an attempted require("preact").

[JoviDeCroock]

Odd, I would have assumed vite to use the import or module build which does not use require https://www.runpkg.com/?@preact/preset-vite@2.2.0/dist/esm/index.mjs

[IanVS]

This seems to be a duplicate of #52.