Does async set the return type in reflect.metadata to promise?

[buehler]

Hey TS - Heroes :-)

I've got a small question. Is the async keyword intended to set the correct return type when using decorators? I'd expect such a thing:

class Foo {
 @AnyDecorator()
 public async foobar() {

 }
}

this should decorate the function foobar with the return type Promise.

Actually it produces:

class Foo {
 foobar() {
 return __awaiter(this, void 0, void 0, function* () {
 });
 }
}
__decorate([
 AnyDecorator(), 
 __metadata('design:type', Function), 
 __metadata('design:paramtypes', []), 
 __metadata('design:returntype', void 0)
], Foo.prototype, "foobar", null);

I'd expect the return type to be Promise like:

class Foo {
 foobar() {
 return __awaiter(this, void 0, Promise, function* () {
 });
 }
}
__decorate([
 AnyDecorator(), 
 __metadata('design:type', Function), 
 __metadata('design:paramtypes', []), 
 __metadata('design:returntype', Promise)
], Foo.prototype, "foobar", null);

Cheers
Chris

[mhegazy]

looks like a bug alright.