Add only 'undefined' to optional parameter types
Add only 'undefined' to optional parameter types

vilic/TypeScript,Eyas/TypeScript,blakeembrey/TypeScript,erikmcc/TypeScript,mihailik/TypeScript,jeremyepling/TypeScript,donaldpipowitch/TypeScript,samuelhorwitz/typescript,erikmcc/TypeScript,Eyas/TypeScript,jwbay/TypeScript,nojvek/TypeScript,synaptek/TypeScript,samuelhorwitz/typescript,nojvek/TypeScript,SaschaNaz/TypeScript,basarat/TypeScript,TukekeSoft/TypeScript,microsoft/TypeScript,TukekeSoft/TypeScript,microsoft/TypeScript,SaschaNaz/TypeScript,vilic/TypeScript,donaldpipowitch/TypeScript,thr0w/Thr0wScript,Eyas/TypeScript,alexeagle/TypeScript,blakeembrey/TypeScript,evgrud/TypeScript,ziacik/TypeScript,plantain-00/TypeScript,chuckjaz/TypeScript,kpreisser/TypeScript,thr0w/Thr0wScript,vilic/TypeScript,Microsoft/TypeScript,chuckjaz/TypeScript,kitsonk/TypeScript,jeremyepling/TypeScript,ziacik/TypeScript,jwbay/TypeScript,samuelhorwitz/typescript,kitsonk/TypeScript,RyanCavanaugh/TypeScript,microsoft/TypeScript,jeremyepling/TypeScript,mihailik/TypeScript,synaptek/TypeScript,ziacik/TypeScript,donaldpipowitch/TypeScript,minestarks/TypeScript,DLehenbauer/TypeScript,weswigham/TypeScript,kpreisser/TypeScript,alexeagle/TypeScript,evgrud/TypeScript,synaptek/TypeScript,donaldpipowitch/TypeScript,DLehenbauer/TypeScript,SaschaNaz/TypeScript,weswigham/TypeScript,synaptek/TypeScript,thr0w/Thr0wScript,basarat/TypeScript,Microsoft/TypeScript,erikmcc/TypeScript,kpreisser/TypeScript,plantain-00/TypeScript,chuckjaz/TypeScript,basarat/TypeScript,minestarks/TypeScript,mihailik/TypeScript,chuckjaz/TypeScript,ziacik/TypeScript,Eyas/TypeScript,vilic/TypeScript,DLehenbauer/TypeScript,plantain-00/TypeScript,evgrud/TypeScript,jwbay/TypeScript,Microsoft/TypeScript,samuelhorwitz/typescript,mihailik/TypeScript,blakeembrey/TypeScript,basarat/TypeScript,plantain-00/TypeScript,nojvek/TypeScript,alexeagle/TypeScript,weswigham/TypeScript,nojvek/TypeScript,minestarks/TypeScript,jwbay/TypeScript,DLehenbauer/TypeScript,TukekeSoft/TypeScript,RyanCavanaugh/TypeScript,thr0w/Thr0wScript,erikmcc/TypeScript,evgrud/TypeScript,blakeembrey/TypeScript,kitsonk/TypeScript,SaschaNaz/TypeScript,RyanCavanaugh/TypeScript