One thing I'm missing in all these languages is 100% auto-completion like the one you have in Java or C#. I have yet to experience a single instance of Intellij not being able to auto-complete something or not do it completely. I know Nim and Rust have good VS Code plugins that do that to some extent but it is not something I can rely upon. Maybe I'm just spoiled.
If I don't remember how to use some function it's a sign that I have to read the documentation. The documentation can have important tips around performance, security & recommended usage patterns that I need to know. And if you don't remember a lot of methods it means you might be out of your league and need to read the documentation and go through a tutorial to understand what you are doing. Keyword, method and vari…
Lastly, at least the auto completion I used in intellij and visual studio is a peak into the documentation, it lists the full method signature, including all other methods, and opens the documentation on click.