Replace CDN React/ReactDOM/Babel with local libs; remove Babel and inline scripts Build Tailwind locally, add safelist; switch to assets/tailwind.css Self-host Font Awesome and Inter (CSS + woff2); remove external font CDNs Implement strict CSP (no unsafe-inline/eval; scripts/styles/fonts from self) Extract inline handlers; move PWA scripts to external files Add local QR code generation (qrcode lib) and remove api.qrserver.com Improve SessionTypeSelector visual selection (highlighted background and ring) Keep PWA working with service worker and offline assets Refs: CSP hardening, offline-first, no external dependencies
decamelize 
Convert a camelized string into a lowercased one with a custom separator
Example:unicornRainbow→unicorn_rainbow
Install
$ npm install --save decamelize
Usage
const decamelize = require('decamelize');
decamelize('unicornRainbow');
//=> 'unicorn_rainbow'
decamelize('unicornRainbow', '-');
//=> 'unicorn-rainbow'
API
decamelize(input, [separator])
input
Type: string
separator
Type: string
Default: _
Related
See camelcase for the inverse.
License
MIT © Sindre Sorhus