Does this still work?

[Aditya94A]

No updates in three years :/

[thesrs02]

Nope, just tried it - failing on NPM Install

[Lizard-King101]

same, getting error on npm Install

[mydaoyuan]

when i fix ReferenceError: primordials is not defined error, it work for my.

how-to-fix-referenceerror-primordials-is-not-defined-in-node-js

running npx npm-force-resolutions and then run npm install solves my problem.

[dandv]

I've no idea why GitHub search pops up this repo as the first search result for "cross browser extension boilerplate" and "Updated on May 2", but what you probably want for cross-platform is extension.js.