TypeScript/tests/cases/compiler/typeArgInference2.ts
2014-07-12 17:30:19 -07:00

12 lines
No EOL
435 B
TypeScript

interface Item {
name: string;
}
declare function foo<T extends Item>(x?: T, y?: T): T;
var z1 = foo(null); // any
var z2 = foo(); // Item
var z3 = foo({ name: null }); // { name: any }
var z4 = foo({ name: "abc" }); // { name: string }
var z5 = foo({ name: "abc", a: 5 }); // { name: string; a: number }
var z6 = foo({ name: "abc", a: 5 }, { name: "def", b: 5 }); // Item