ERROR in /Users/joffreyjaffeux/Projects/node-vibrant/src/test/common/server.ts
[tsl] ERROR in /Users/joffreyjaffeux/Projects/node-vibrant/src/test/common/server.ts(9,42)
TS2345: Argument of type '(err: any) => void' is not assignable to parameter of type '() => void'.
Before this fix build would fail with this error: