Comment by bastawhiz

That's just wrong. The example is live: you can run it right there on the page. If the code isn't working when you write it, you're probably importing something incorrectly (or you're not running it in an environment with React, which is where the `use*` functions come from). You can even click on the source of the log lines when the example is running (on the right edge of the Chrome console) to jump into the hot-loaded code and see the exact code that's running it.