TypeScript not providing function name

Question

I have some typescript code, and I'm doing some metaprogramming where I need to be able to access instance.func.name, however TypeScript omits the function name in the compiled JS.

TypeScript:

class ClassName {
    // ... 
    func(): ReturnType {
        // ...
    }
}

Compiled JavaScript:

// ...
ClassName.prototype.func = function () {
    // ... 
};

Desired JavaScript:

ClassName.prototype.func = function func() {
    // ...                          ^^^^
};

Is there a compiler option I'm missing, or a keyword I can use in TypeScript to accomplish this?

Answer 1

A solution, once which I will not be marking as accepted, because it doesn't provide the name property, but does work with any other identifier is as follows:

function named(target: any, key: string) {
    target[key].functionName = key;
}

class ClassName {
    // ... 
    @named
    func(): ReturnType {
         // ...
    }
}

Then access instance.func.functionName.