Is there an autocomplete js package on atom?

Question

atom

I seem to have a couple of plugins on brackets, but it doesn't slow down nicely. I decided to switch to Atom, I can't find the js autocomplete plugin how it works in brackets...
Here's an example of what I want.
As on brackets:

As you can see, he knows how to index a file and then issue nice hints. Atom did not notice this at all ...

Answer 1

atom-ternjs