[Feature Request] Reading sw.js URL from query string for simpler self host

[yume-chan]

Usually self host StreamSaver means manually (or use copy-webpack-plugin) copy mitm.html and sw.js to public folder and set up StreamSaver.mitm = '/static/mitm.html'.

But with Webpack 5 and URL Assets, one can do something like

StreamSaver.mitm = new URL('streamsaver/mitm.html?url', import.meta.url).toString() + '?sw=' + new URL('streamsaver/sw.js?url', import.meta.url).toString();

And Webpack will automatically copy mitm.html and sw.js to public folder. One bonus point is that these files now have names with hashes so they can be cached forever.

However, the sw.js path is hardcoded so the above code doesn't really work.

https://github.com/jimmywarting/StreamSaver.js/blob/cd8e32a84f951541c5be183b2b409bd17dbb16cd/mitm.html#L41

I have tested locally that some thing like this is possible (although URLSearchParams may have compatibility issue)

return swReg || navigator.serviceWorker.register(new URLSearchParams(location.search).get('sw') || 'sw.js', { scope: './' })

[yume-chan]

Actually service worker script URL shouldn't change. So closing in favor of copying deployment.