javascript - What does this way of writing <> in js mean?

Question

export function combineReducers<S>(reducers: ReducersMapObject): Reducer<S>;

上边代码是redux中的一段，求解释<>这个是神马意思

Answer 1

Is this in typescript? Represents generics.

Answer 2

This is generics in typescript
https://www.tslang.cn/docs/ha...

Answer 3

Generics in typescript, functions similar to java and C++