Add JSDoc to help IDE's to understand what's going on

[jdreesen]

PhpStorm for example says Unresolved method or function addEventListener() when trying to call select('...').addEventListener(...) without the JSDoc.

[fregante]

Sounds good! However parent can also be an Array-like in select.all

[jdreesen]

Oops, you are right, I updated the commit.

[fregante]

Excellent! One last thing. select() can also return null. How's that handled by JSDoc?

[jdreesen]

Nullable types are prefixed with a ? as far as I know.

I updated the commit once again.

[fregante]

Thank you for the first PR of this repo! :)

Your changes are in 4.1.1

[fregante]

Do you mind if I drop JSDoc in favor of TypeScript definition files? PhpStorm should work anyway, maybe better.

Also perhaps try #4 out

[jdreesen]

Of course not, go ahead. TypeScript definitions should be even better than JSDoc.