Build caching

[wmertens]

What is it about?

make the optimizer cache build results

What's the motivation for this proposal?

Problems you are trying to solve:

While the optimizer is fast, not running it is even faster.

---

Proposed Solution / Feature

What do you propose?

In the transform phase of the plugin, we could hash the code+transform options and then check a cache under node_modules/.qwik. This is especially nice in dev mode.

I'm not sure what vite or rollup already offer to assist with this.
We must also make sure the plugin can still work without filesystem access.

---

Links / References

vitejs/vite#12943

[shairez]

Thanks @wmertens
We went over this and thought it's a good idea to explore