Ask HN: What's a good way to obfuscate my JavaScript code?

In contrast to most devs, I use plain Javascript in my projects. No react, no server side compilation, nothing. Especially now that we have modules supported in the browser, it is lovely!

But I don't like that all my code is out in the open verbatim.

What is a good way to obfuscate it? Preferably some command line tool that I can unleash onto a directory, and it will obfuscate every js file it finds in there, including subdirs.