Class is anonymous for decorator code

[TheLevenCreations]

As an Javascript developer, I tried to implement the dependency injection, by using the tool introduced in rbuckton/ReflectDecorators (https://github.com/rbuckton/ReflectDecorators.git). However, I just found the following code will be compiled into an anonymous class declaration in js file.

    @log
    class A {
        constructor() {
            Debug.log('A created');
        }

        afunc() {}

        bfunc() {}

    }

The decorator @log is quite simple, it is to print the class name.

// class decorator
function log(target: any) {
    console.log(target.name);
    ....
}

The generated javascript is as follows. I turned "emitDecoratorMetadata" to true in tsconfig.json

        let A = class {
            constructor() {
                Debug_1.Debug.log('A created');
            }
            afunc() { }
            bfunc() { }
        };
        A = __decorate([
            decorators_1.log, 
            __metadata('design:paramtypes', [])
        ], A);

I am so frustrated to see that constructor A is actually a class without name - the target in decorator code is an actually anonymous constructor function.

I do not know why. I can not figure out why make it anonymous if one decorator is there. As a result, I have to implement it like the following, which looks really odd and confusing, by using metadata Reflect API:

    @logClass('A')
    class A {
        constructor() {
            Debug.log('A created');
        }

        afunc() {}

        bfunc() {}

    }

After investigation in sources of Typescript, I found the following lines related to this issue:
in function emitClassLikeDeclarationForES6AndHigher(node), it reads:

                ...
                write("class");
                if ((node.name || (node.flags & 1024 && staticProperties.length > 0)) && !thisNodeIsDecorated) {
                    write(" ");
                    emitDeclarationName(node);
                }

So while compiling class A, thisNodeIsDecorated is true and the name is never emitted. May I ask why? Would it better to just emit class name, like the following? Please let me know, if I missed something. Thanks very much.

        let A = class A {
            constructor() {
                Debug_1.Debug.log('A created');
            }
            afunc() { }
            bfunc() { }
        };
        A = __decorate([
            decorators_1.log, 
            __metadata('design:paramtypes', [])
        ], A);

[TheLevenCreations]

btw, I am using tsc 1.7.5, target es6

[mhegazy]

looks like a duplicate of #5386