In this series, we continue to fix the poorly optimized client js bundles that are needlessly large and significantly add to total blocking time.
I discovered a quirk with prism-react-renderer, where if you do not add to the optional languages config - there is apparently no code-splitting for the base language support - and it ends up injecting every language it supports (regardless of whether it appears in your site) into the final production bundle. Just search for "fuck" in your bundle - and if "brainfuck" exists - you know you got the same problem!