有没有办法像类一样处理TypeScript声明文件中的接口或变量,以便能够从中扩展一个类?
就像这样:
declare module "tedious" {
import events = module('events');
export class Request extends event.EventEmitter {
constructor (sql: string, callback: Function);
addParameter(name: string, type: any, value: string):any;
addOutputParameter(name: string, type: any): any;
sql:string;
callback: Function;
};
}
现在我需要重新定义 EventEmitter 接口,像这样使用我的自定义 EventEmitter 声明。
import events = module('events');
class EventEmitter implements events.NodeEventEmitter{
addListener(event: string, listener: Function);
on(event: string, listener: Function): any;
once(event: string, listener: Function): void;
removeListener(event: string, listener: Function): void;
removeAllListener(event: string): void;
setMaxListeners(n: number): void;
listeners(event: string): { Function; }[];
emit(event: string, arg1?: any, arg2?: any): void;
}
export class Request extends EventEmitter {
constructor (sql: string, callback: Function);
addParameter(name: string, type: any, value: string):any;
addOutputParameter(name: string, type: any): any;
sql:string;
callback: Function;
};
我需要在我的TypeScript文件中扩展它
import tedious = module('tedious');
class Request extends tedious.Request {
private _myVar:string;
constructor(sql: string, callback: Function){
super(sql, callback);
}
}