如何在定义为“any”的第三方TypeScript接口中扩充属性?

给定定义如下的第三方TypeScript模块:

// in /node_modules/third-party-module/index.d.ts
declare module 'ThirdPartyModule' {
    export interface ThirdPartyInterface {
        data: any;
    }
}

如何扩展此模块以更严格地键入 data 所有物

我试过这个:

// in /app/typings.d.ts
declare module 'ThirdPartyModule' {

    interface IMyCustomType {}

    interface ThirdPartyInterface {

        // causes a compiler error: Subsequent property declarations 
        // must have the same type.  Property 'data' must be of type 
        // 'any', but here has type 'IMyCustomType'.
        data: IMyCustomType;
    }
}

但这给了我一个编译器错误:“后续的属性声明必须具有相同的类型。属性‘data’必须是‘any’类型,但此处的类型为‘IMyCustomType’。”

如果第三方模块将属性定义为实际类型,如下所示:

// in /node_modules/third-party-module/index.d.ts
declare module 'ThirdPartyModule' {
    interface IAnotherThirdPartyInterface {
        something: string;
    }

    interface ThirdPartyInterface {
        data: IAnotherThirdPartyInterface;
    }
}

我可以简单地 IMyCustomType 接口扩展此第三方类型:

// in /app/typings.d.ts
declare module 'ThirdPartyModule' {
    interface IMyCustomType extends IAnotherThirdPartyInterface {}

    interface ThirdPartyInterface {
        data: IMyCustomType;
    }
}

但是,由于类型已定义 any ,我无法扩展它:

// causes a compiler error:  'any' only refers to a type, 
// but is being used as a value here.
interface IMyCustomType extends any {}