Is this correct?

It doesn't seem so to me, either from the way it works or from what little of the code I've looked at...

But I don't have time to do more than the quick glance I just did at a few of the files of each and need to run, so hopefully someone cleverer than me who won't need as much time as me to answer the question could confirm while I'm afk

Entirely correct, c.f. LLM.ts. The bit to Show HN here, is about ~40 lines of code. Simple Typescript MVP of calling the library.

(source: maintains an LLM client that works across MLC/llama.cpp/3P providers; author of sibling comment that misunderstood initially)