Npm compile and regenerate bundle files with my changes

Hello, i have successfully installed Jitsi for web (super amazing app). I’ve done some modifications (under /usr/share/jitsi-meet/) and I would like to re-generate the files (within my changes), how can i do that? Is there any tutorial? I assume this should be done with npm right? Can someone give me an example please?

Thanks in advance

Docs here:

although it seems to be missing the npm install step before make.

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Thanks!