Bring back ts 2.1 compile option
Bring back ts 2.1 compile option

one-pieces/DefinitelyTyped,chrootsu/DefinitelyTyped,dsebastien/DefinitelyTyped,minodisk/DefinitelyTyped,zuzusik/DefinitelyTyped,rolandzwaga/DefinitelyTyped,ashwinr/DefinitelyTyped,smrq/DefinitelyTyped,aciccarello/DefinitelyTyped,AgentME/DefinitelyTyped,zuzusik/DefinitelyTyped,georgemarshall/DefinitelyTyped,alexdresko/DefinitelyTyped,arusakov/DefinitelyTyped,AgentME/DefinitelyTyped,abbasmhd/DefinitelyTyped,rolandzwaga/DefinitelyTyped,ashwinr/DefinitelyTyped,johan-gorter/DefinitelyTyped,mcliment/DefinitelyTyped,abbasmhd/DefinitelyTyped,GiedriusGrabauskas/DefinitelyTyped,aciccarello/DefinitelyTyped,johan-gorter/DefinitelyTyped,AgentME/DefinitelyTyped,chrootsu/DefinitelyTyped,GiedriusGrabauskas/DefinitelyTyped,AgentME/DefinitelyTyped,borisyankov/DefinitelyTyped,jimthedev/DefinitelyTyped,minodisk/DefinitelyTyped,QuatroCode/DefinitelyTyped,amir-arad/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,magny/DefinitelyTyped,aciccarello/DefinitelyTyped,markogresak/DefinitelyTyped,arusakov/DefinitelyTyped,alexdresko/DefinitelyTyped,YousefED/DefinitelyTyped,zuzusik/DefinitelyTyped,borisyankov/DefinitelyTyped,benishouga/DefinitelyTyped,benishouga/DefinitelyTyped,dsebastien/DefinitelyTyped,nycdotnet/DefinitelyTyped,georgemarshall/DefinitelyTyped,YousefED/DefinitelyTyped,jimthedev/DefinitelyTyped,mcrawshaw/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,jimthedev/DefinitelyTyped,mcrawshaw/DefinitelyTyped,georgemarshall/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,isman-usoh/DefinitelyTyped,arusakov/DefinitelyTyped,magny/DefinitelyTyped,nycdotnet/DefinitelyTyped,georgemarshall/DefinitelyTyped,QuatroCode/DefinitelyTyped,benishouga/DefinitelyTyped,smrq/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,isman-usoh/DefinitelyTyped,benliddicott/DefinitelyTyped