1         function FnA() { return { a: 1 } }

 2         function FnB() { return false }

 3         function FnC() { return true }

 4         function FnD() { return 1 }

 5         const aa = new FnA()

 6         const bb = new FnB()

 7         const cc = new FnC()

 8         const dd = new FnD()

 9         console.log('aa', aa)

10         console.log('bb', bb)

11         console.log('cc', cc)

12         console.log('dd', dd)

aa {a: 1}

bb FnB {}

cc FnC {}

dd FnD {}