Help / example running mozjpeg in a worker (comlink)

[kasperkamperman]

I'm trying to understand all the concepts regarding WebWorkers in combination with encoding.

As far as I understand in the example.html in the specific code folder (for example mozjpeg_enc) the encoding doesn't happen in a webworker.

How would I import the "mozjpeg_enc.js" in a worker.js and run that?

I looked for some information on comlink and found an article that shows it with ffmpeg (https://dev.to/chromiumdev/running-ffmpeg-with-wasm-in-a-web-worker-5gb5).

importScripts("https://cdn.jsdelivr.net/npm/comlinkjs@3.0.2/umd/comlink.js");
importScripts("mozjpeg_enc.js");
Comlink.expose(mozjpeg_enc);

This gives me the error "TypeError: undefined is not an Object. (evaluating 'prop in endpoint')"

Probably I overlook something really basic, hopefully, someone can give me a hint.
A small example or link to some resources would help really much.

In the "complex js-heavy web apps" talk some code is shown however it seems psuedo JS code, because I can't find it anywhere:
https://youtu.be/ipNW6lJHVEs?t=1215

[surma]

Yeah, this should work. Not sure why it doesn't. Can you put your demo in a Glitch or something?