Intersect interfaces, but "union" properties

[fregante]

This is what I'm looking for

interface MyNum {
	id: number;
}
interface MyStr {
	id: string;
	title: string;
}

type Type = SmartIntersect<MyNum, MyStr>; // {id: number | string, title: string}

but this is what we got:

type Type = MyNum | MyStr; // {id: number } | {id: string, title: string}
type Type = MyNum & MyStr; // {id: never, title: string }

Do you think this is already possible?

[sindresorhus]

Sounds similar to #173.

[fregante]

Yup 👌