More granularity for error types?

[DmitrySharabin]

I have a test that passes, even though I expect it to fail:

{
  run () {
    throw new SyntaxError();
  },
  throws: TypeError,
}

I know that both SyntaxError and TypeError are subclasses of the Error class, and according to our docs and the code we have in our codebase, this test should (and does) pass. But should it?

I found a way to get the granularity I need:

{
  run () {
    throw new SyntaxError();
  },
  throws: (error) => error.constructor === TypeError;
}

Is this the right/expected way to get what I need?

[LeaVerou]

I would expect that test to pass if the error thrown is either a TypeError or a subclass of TypeError.