Use type name in error messages and inline doc

[testerez]

TypeScript Version: 2.4.0

Code

const foo = {
  name: 'Foo',
  age: 20,
}
type Foo = typeof foo;

function test(foo: Foo) { }

test('');

Expected behavior:

I'd like the error message to be:

Argument of type '""' is not assignable to parameter of type Foo

And the inline doc to be:

function test(foo: Foo): void

Actual behavior:
But the error message is

Argument of type '""' is not assignable to parameter of type '{ name: string; age: number; }'.

And the inline doc is

function test(foo: {
    name: string;
    age: number;
}): void

In this example, the current behavior is alright but in more complicated situations the error messages can become very verbose and intimidating. Using the types name would make them a lot cleaner IMO.

[mhegazy]

Type aliases are just aliases, and they are eagerly resolved to what they alias by the compiler. This saves the compiler time and space when dealing with types. we try to do a reverse lookup process when we are writing the type name, but there is a limit to that.

[mhegazy]

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.