How do I define an anonymous generic interface in typescript?

Question

我正在寻找一种无需声明接口即可使以下代码编译的方法。

var a : <A>{ (value: A): void; (): A; } = null; 

Answer 1

It doesn't make sense for a generic type like that to even exist. It's the same reason you can't write Foo<T> x; in C++ without an actual T in scope -- once the type is manifest, it has to be bound.

You can write this instead, which probably has the semantics you wanted anyway.

var a: { <A>(value: A): void; <A>(): A; } = null; 

If that's not what you were looking for, it'd be useful to post some examples of what valid and invalid calls on a would look like.