75e7a622_it_become__and_how_is_it_used___JavaScript_types
[Scala types] _ <: js.Any [JavaScript types] 
itself
n u m b e r
n u m b e r ( r e s t r i c t e d r a n g e )
s t r i n g
n u l l
u n d e f i n e d
i t s e l f
o p a q u e , e x c e p t @ J S E x p o r t ' e d m e m b e r s
Scala.js: what has it become, and how is it used?
JavaScript types