[Macha]

Your experience is greatly different to mine in webstorm. Better, sure, but I get about a 60% success rate. This was a vast improvement on basically anything else but it isn't _just works_.

Might be a pathological case however, the primary js project I work on is composed of about 12 modules, uses ES5 and Angular 1, except the build tooling which is ES6, has bower and npm dependencies, and has at times used every class/object pattern under the sun.

[derimagia]

Javascript is a tricky language to do this, most libraries don't have types or JSDocs which is somewhat an issue so they need to be way less strict on what's auto-completed/interpreted. I don't see this as a fault in Jetbrains here. I say that wishing it would do more, but understanding it's probably at it's limits.

Try IntelliJ with plugins for Ruby, Python, PHP, NodeJS, Go, Rust - I agree that for the most part it just "works". Although you can "feel" it's Java engine sometimes.