訪問的關鍵

Question

我不認爲這是可能的，但考慮到這一點：

接口

import {BrowserService} from "../services/browser/index"; 

export interface IPrimaryNavigation { 
    opts:IPrimaryNavigationOpts; 
} 

export interface IPrimaryNavigationOpts { 
    ... 
    browserService:BrowserService; 
    ... 
} 

類：

import {IPrimaryNavigation, IPrimaryNavigationOpts} from "./interface"; 

export class PrimaryNavigation implements IPrimaryNavigation { 
    public opts:IPrimaryNavigationOpts; 
    ... 
    mounted():void { 
     ... 
     this.listenForBootstrap(this.opts.bsNav, this.opts.browserService); 
    } 
    listenForBootstrap(menuName:string,browserService:<???>):void { 
                 ^^^ here is the problem - 
    // I want to do the equivalent of IPrimaryNavigationOpts.browserService but can't. 
    // I don't think I should have to import the IBrowserService explicitly. 

    } 
} 

怎麼辦你解決了這個問題。我似乎無法在網上找到任何涉及此類問題的示例。我承認我對這一切都很新穎，所以讚賞。

Answer 1

我們可以再出口使用的東西。因此，「./interface」裏面我們可以做（檢查最後幾行）：

import {BrowserService} from "../services/browser/index"; 

export interface IPrimaryNavigation { 
    opts:IPrimaryNavigationOpts; 
} 

export interface IPrimaryNavigationOpts { 
    ... 
    browserService:BrowserService; 
    ... 
} 
// re-export used interface 
export { BrowserService } 

而現在，我們可以導入甚至型

// we import the re-exported type 
import {IPrimaryNavigation, IPrimaryNavigationOpts 
     BrowserService } from "./interface"; 

export class PrimaryNavigation implements IPrimaryNavigation { 
    public opts:IPrimaryNavigationOpts; 
    ... 
    mounted():void { 
     ... 
     this.listenForBootstrap(this.opts.bsNav, this.opts.browserService); 
    } 
    listenForBootstrap(menuName:string,browserService:BrowserService):void { 
    //listenForBootstrap(menuName:string,browserService:<???>):void { 
    //             ^^^ here is the problem - 
    // I want to do the equivalent of IPrimaryNavigationOpts.browserService but can't. 
    // I don't think I should have to import the IBrowserService explicitly. 

    } 
} 

Answer 2

您可以鍵入如下：browserService: typeof IPrimaryNavigationOpts.browserService