Filling in an implementation using VS Code will expand types

[Tyriar]

type Foo = [string, number];

interface Bar {
  test(a: Foo): void;
}

class Baz implements Bar{
}

Using fill in Baz implementation quick fix:

type Foo = [string, number];

interface Bar {
  test(a: Foo): void;
}

class Baz implements Bar {
  test(a: [string, number]): void {
    throw new Error("Method not implemented.");
  }
}

I expect:

class Baz implements Bar {
  test(a: Foo): void {
    throw new Error("Method not implemented.");
  }
}

/cc @mjbvz

[aozgaa]

Looks like we throw away the information for the alias associated with the type of a symbol as part of getTypeOfSymbol, so we will need to modify it or create a helper which tries to retrieve the alias when possible.