Initial import of Template:jsctypesSidebar
Initial import of Template:jsctypesSidebar

https://developer.mozilla.org/en-US/docs/Template:jsctypesSidebar

Contributors (by MDN username):
* arai
* BychekRU
* fscholz

a2sheppy/kumascript,a2sheppy/kumascript,jpmedley/kumascript,jpmedley/kumascript