Unpacked tuples do not satisfy function argument type signature

[akdor1154]

TypeScript Version: 2.2.1

Code

function testUnpack(s: string, n: number) {
	return true;
}

const testArgs: [string, number] = ['asdf', 123];

testUnpack(...testArgs);

Expected behavior:
compiles with no issue
Actual behavior:
error TS2346: Supplied parameters do not match any signature of call target.

[akdor1154]

sorry, dupe of #5296
(I am apparently in Python mode, and searched for unpack not spread)