Question

如何实例化这种接口（d.ts）？

export interface IReply {
    <T>(err: Error, result?: string | number | boolean | Buffer | stream.Stream | IPromise<T> | T, credentialData?: any): IBoom;
    <T>(result: string | number | boolean | Buffer | stream.Stream | IPromise<T> | T): Response;
    continue(credentialData?: any): void;
    //...
}

目标是调用此函数（hapi处理函数）：

static healthcheck: ISessionHandler = (request: Request, reply: IReply): void => {

    reply({healthy: true});
};

以这样的方式：

HealthcheckController.healthcheck(request, (reply) => {

    console.log('reply : ' + reply);
});

如果我删除了打字要求，这一切都有效 - ＆gt;有效的JavaScript。但似乎无法让它在TypeScript中运行。它在tsc上失败了。

我似乎无法实例化一个允许我使用TypeScript成功调用reply函数的healthcheck变量。

Answer 1

你可以像下面的（简单的）样本那样做：

export interface IReply 
{
    (result: any): string;
    continue(credentialData?: any): void;
}

let healthCheck = (reply: IReply): void => 
{
    reply({healthy: true});
};

var f = <IReply>((reply: any) => { console.log("reply: ",  reply); return reply; });
f.continue = (credentialData?: any) => { console.log("continue: ", credentialData)};

healthCheck(f);

实现接口，其中变量也是一种方法

1 个答案: