typescript - 如何在 Typescript 接口(interface)中为函数定义返回类型 void？

Question

我有这个功能:

   network = (action): void =>{
        if (action) {
            this.action = action;
            this.net = true;
            this.netd = true;
        } else {
            this.action = null;
            this.net = false;
            this.netd = false;
        }
    }

我试图定义一个接口(interface)，但它对我不起作用:

interface IStateService {
    network: (action: string): void;
}

我收到一条消息说“unexpected token”无效

Answer 1

函数类型接口(interface)成员的语法有两个选项，它们在这里是等价的:

interface IStateService {
    network: (action: string) => void;
}

或

interface IStateService {
    network(action: string): void;
}