Fixes a problem with clearing the module cache.
Fixes a problem with clearing the module cache.

cschuller/yakjs,cschuller/yakjs,cschuller/yak-js,cschuller/yakjs,dasMulli/yak-js,cschuller/yak-js,dasMulli/yak-js,cschuller/yak-js,dasMulli/yak-js