This changes the build for the replay worker:

• Ensure that build:transpile and build:types are actually separate things, to avoid conflicts
• Ensure we do not rely on copying vendor stuff as-is, but relying on rollup

Basically, we now keep the worker in _worker.ts, while worker.ts is just a placeholder that is replaced at built time with the string-wrapped & resolved version of _worker.ts. This way, the imports etc. work as expected, and we can actually generate the types normally.

I also aligned the build structure with other packages, the output is now:

While index.js is:

import r from"./worker";function e(){const e=new Blob([r]);return URL.createObjectURL(e)}export{e as getWorkerURL};

and worker.js is:

export default `/*! pako 2.1.0 https://github.com/nodeca/pako @license (MIT AND Zlib) */
function t(t){let e=t.length;......