One of the wildest code matchup must be #mdx. It was already kinda strange to mix #HTML with #JavaScript in a #jsx file. But someone didn't think it was enough. Now we have MDX that adds #markdown on top of that! I love it. The fact that those tree language just accidentally works together without collision is something. I just discovered that cause I'm discovering #docusaraus, a #react based documentation platform made by #facebook. They might be one of the creepiest company installing spyware in your phone to track the other apps I'm your phone but the open source team did make some crazy good frameworks and tools.