Clipboard API Error on Firefox, Missing Node Version in apt-cache policy, and package.json Update Needed

Hey,

I love the webapp, truly, that's why I am reporting the identified issues to help improve.

1. When running the application on Firefox, the following error appears in the console TypeError: can't access property "writeText", navigator.clipboard is undefined. I believe either the Clipboard API in Firefox requires HTTPS or the "clipboard-write" permissions.
2. Running apt-cache policy nodejs and node was not successful on the latest LinuxMint, in fact the packages.json locks the nodejs in an none LTS versions.
3. package.json dependencies seem a bit outdated, an upgrade definitely required.

Wish you all the best and keep up with the great work

@Sim4n6