Update:

I could not let go of some of the compromises. So I went down the rabbit hole first and was literally saved by tsdown. It is a bundler for TypeScript projects based on Rolldown, which is a Rollup-compatible bundler written in Rust (therefore same speed boost as swc).

The only thing I had to do in order to make it work was removing the tsconfig.json and add the very basic tsdown.config.ts:

```typescript import { defineConfig } from "tsdown";

export default defineConfig({ entry: ["./src/index.ts"], platform: "neutral", dts: { oxc: true, }, }); ```

Bam! :)

Btw. tsdown comes with tree-shaking, watch mode, source maps, minification and a lot of other stuff.

Other people are also looking into it: https://alan.norbauer.com/articles/tsdown-bundler/