Using latest `lru-cache` again and drop Node 18#243

andrewbranch merged 3 commits intoarethetypeswrong:mainarethetypeswrong/arethetypeswrong.github.io:mainfrom

RobinTail:revert-lru-cache-fixRobinTail/arethetypeswrong:revert-lru-cache-fixCopy head branch name to clipboard