For which languages does it work? The comments in prettify.js are authoritative but the lexer should work on a number of languages including C and friends, Java, Python, Bash, SQL, HTML, XML, CSS, ...

This is the official JavaScript and TypeScript SDK for use with Optimizely ... then the instance will not be garbage collected even though there are no more references to the instance in the code.

“Java has a long history of perseverance through changes in technology trends and we see no sign of that abating ... programming languages including JavaScript, TypeScript, PHP, Python ...