vix wax calculation taken from https://runescape.wiki/w/MediaWiki:Gadget-viscalc-core.js
Current GE prices are retrieved from https://api.weirdgloop.org/
#to initialize the repo and install dependencies
npm i
#build
npm run build
#alternatively to auto-rebuild when source files are changed
npm run watch
But mostly this requires opening the app inside alt1 to gain the full capture and overlay benefits.