Helping Javascript code completion

The code completion in IntelliJ is really quite great, but javascript is so dynamic, it's impossible to get it up to snuff with other languages.

What I want to know is there a way to help the completion engine to make it more accurate (not completing on a global scope).  Can I somehow tell the editor what type a variable is?

For instance, in python I would do:
assert isinstance(obj, type)

Is there a way to give IntelliJ's editor / code completion engine hints?  Is it code comments (with types)?


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Hi there,

Something like this?

/** @type {jQuery} */
var jjj;



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