Fix warning when --noImplicitAny is enabled by adding a missing type (#758)
Fix warning when --noImplicitAny is enabled by adding a missing type (#758)


excaliburjs/Excalibur,excaliburjs/Excalibur,htalat/Excalibur,htalat/Excalibur,htalat/Excalibur,excaliburjs/Excalibur