TypeScript Version: 2.0.0@beta && 2.1.0-dev.20160824

Code

var fooPromiseLike: PromiseLike<string>;
var fooPromise: Promise<string>;
var bar: (f: PromiseLike<boolean>) => void;

// Errors with PromiseLike<string> is not assignable to PromiseLike<boolean>
bar(fooPromiseLike);

// Should also error?
bar(fooPromise);

Expected behavior:

Should give an error when passed an incorrect signature, works as expected in 1.8.10. Unless I am missing something?

I couldn't find any open issues related to this and it seems to still be broken in the nightly build