Set "strictNullChecks" true.
Set "strictNullChecks" true.

dsebastien/DefinitelyTyped,chrootsu/DefinitelyTyped,arusakov/DefinitelyTyped,borisyankov/DefinitelyTyped,AgentME/DefinitelyTyped,arusakov/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,arusakov/DefinitelyTyped,AgentME/DefinitelyTyped,magny/DefinitelyTyped,dsebastien/DefinitelyTyped,chrootsu/DefinitelyTyped,one-pieces/DefinitelyTyped,AgentME/DefinitelyTyped,magny/DefinitelyTyped,markogresak/DefinitelyTyped,mcliment/DefinitelyTyped,borisyankov/DefinitelyTyped,AgentME/DefinitelyTyped,rolandzwaga/DefinitelyTyped,rolandzwaga/DefinitelyTyped