Hi!

TypeScript Version: 3.5.2

Search Terms: destructuring result function generics type loss any

Problem is only with snippet 2, when I get the third parameter with destructuring, the first one became any instead of the generic type. The problem doesn't show if the generic is explicitly provided. Snippets 1, 3 and 4 works as expected.

Code

function foo<T = {}>(): [T, string, number] {
	let a: T;
	return [a, 'foo', 2];
}

// 1
const [a, b] = foo();
// a: {}, b: string

// 2
const [x, y, z] = foo();
// x: any, y: string, z: number

// 3
const res = foo();
const [x2, y2, z2] = res;
// x2: {}, y: string, z: number

// 4
const [x3, y3, z3] = foo<{ bar: string }>();
// x3: { bar: string }, y3: string, z: number

Expected behavior:
x type is {}

Actual behavior:
x type is any

Playground Link: https://www.typescriptlang.org/play/#src=%0D%0Afunction%20foo%3CT%20%3D%20%7B%7D%3E()%3A%20%5BT%2C%20string%2C%20number%5D%20%7B%0D%0A%09let%20a%3A%20T%3B%0D%0A%09return%20%5Ba%2C%20'foo'%2C%202%5D%3B%0D%0A%7D%0D%0A%0D%0Aconst%20%5Ba%2C%20b%5D%20%3D%20foo()%3B%0D%0A%2F%2F%20a%3A%20%7B%7D%2C%20b%3A%20string%0D%0A%0D%0Aconst%20%5Bx%2C%20y%2C%20z%5D%20%3D%20foo()%3B%0D%0A%2F%2F%20x%3A%20any%2C%20y%3A%20string%2C%20z%3A%20number%0D%0A%0D%0Aconst%20res%20%3D%20foo()%3B%0D%0Aconst%20%5Bx2%2C%20y2%2C%20z2%5D%20%3D%20res%3B%0D%0A%2F%2F%20x2%3A%20%7B%7D%2C%20y%3A%20string%2C%20z%3A%20number%0D%0A%0D%0Aconst%20%5Bx3%2C%20y3%2C%20z3%5D%20%3D%20foo%3C%7B%20bar%3A%20string%20%7D%3E()%3B%0D%0A%2F%2F%20x3%3A%20%7B%20bar%3A%20string%20%7D%2C%20y3%3A%20string%2C%20z%3A%20number

Related Issues:
Some issues are covering topics that seems related, but I couldn't find one with my specific issue, sorry if there's already a duplicate for this one!

Thanks :)