TypeScript Version: 2.1.4

Code

interface I {
	a: string;
}

function f1<T extends Partial<I>>() {
	// Error TS2322
	let i: T = {};
}

function f2<T extends I>() {
	// Error TS2322
	let i: Partial<T> = {};
}

Expected behavior:
No errors

Actual behavior:
Error TS2322: Type '{}' is not assignable to type 'T' / 'Partial'

Forgive me if this is simply a limitation of the Typescript engine and the implementation of Partial, but I don't know enough about the internals to make a judgement there.