Shorten the context parameter name.
Shorten the context parameter name.

TODO Guarantee non-collision.

jlongster/transmogrifier,rafaelstz/regenerator,juliocanares/regenerator,Jericho25/regenerator,facebook/regenerator,rwaldron/regenerator,sebmck/regenerator,kittens/regenerator,RReverser/js-goto-transpiler,Jericho25/regenerator,jlongster/unwinder,juliocanares/regenerator,facebook/regenerator,liviuignat/regenerator,jlongster/transmogrifier,jlongster/unwinder,sebmck/regenerator,liviuignat/regenerator,rafaelstz/regenerator,facebook/regenerator,RReverser/js-goto-transpiler,jlongster/unwinder,kittens/regenerator