Provide a string literal-valued alternative to the final switch case.
Provide a string literal-valued alternative to the final switch case.

This allows the runtime simply to set context.next = "end" in order to
jump to the final case.

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