IntelliJ does an amazingly good job of Javascript + html + CSS code completion, inspection, and reformatting. I primarily program in Java and I expected basica

IntelliJ does an amazingly good job of Javascript + html + CSS code completion, inspection, and reformatting. I primarily program in Java and I expected basically no IDE support for Javascript, but I was pleasantly surprised when it started warning me that imported files don't exist, my jquery selectors don't match any element IDs, my CSS is invalid, etc etc etc.