Revert "Remove `--allowSyntheticDefaultImports`" (from ember)
Revert "Remove `--allowSyntheticDefaultImports`" (from ember)

This reverts commit 43a1348b9146b0c6130a37f28d019eb2924ad9a3.

AbraaoAlves/DefinitelyTyped,jimthedev/DefinitelyTyped,alexdresko/DefinitelyTyped,aciccarello/DefinitelyTyped,dsebastien/DefinitelyTyped,rolandzwaga/DefinitelyTyped,alexdresko/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,georgemarshall/DefinitelyTyped,nycdotnet/DefinitelyTyped,markogresak/DefinitelyTyped,rolandzwaga/DefinitelyTyped,benishouga/DefinitelyTyped,magny/DefinitelyTyped,mcliment/DefinitelyTyped,benishouga/DefinitelyTyped,arusakov/DefinitelyTyped,dsebastien/DefinitelyTyped,borisyankov/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,jimthedev/DefinitelyTyped,jimthedev/DefinitelyTyped,zuzusik/DefinitelyTyped,arusakov/DefinitelyTyped,aciccarello/DefinitelyTyped,AgentME/DefinitelyTyped,one-pieces/DefinitelyTyped,zuzusik/DefinitelyTyped,abbasmhd/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,zuzusik/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,nycdotnet/DefinitelyTyped,arusakov/DefinitelyTyped,abbasmhd/DefinitelyTyped,chrootsu/DefinitelyTyped,georgemarshall/DefinitelyTyped,benliddicott/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,aciccarello/DefinitelyTyped,borisyankov/DefinitelyTyped,georgemarshall/DefinitelyTyped,chrootsu/DefinitelyTyped,magny/DefinitelyTyped,benishouga/DefinitelyTyped