Angular 2 / Typescript重新导出：“找不到模块：无法解析[...]”(Angular 2/ Typescript Re-export: “Module not found: Can't resolve […]”)

 我正在使用Angular 2和Typescript。 我正在尝试创建一个类集合，每个类都在自己的文件中定义，并希望能够使用单个（或许可能）更多行来导入它们。 
 
 像这样的东西： 
 
// lib/foo.ts
export class Foo {}

// lib/bar.ts
export class Bar {}

// lib/index.d.ts
export * from './foo';
export * from './bar';

// app.component.ts
import * as lib from './lib';

...
let foo = new lib.Foo();
let bar = new lib.Bar();
 
 我通过互联网搜索了一段时间，并在我的代码中尝试了很多可能的方法，但它们似乎都没有用。 例如，在此Stackoverflow答案中 ，它似乎与我的语法相同（上面的代码）。 
 
 那么也许这是一个特定角度的问题？ 
 
 这是我收到的完整错误消息，当使用“ng serve”构建时（在角度cli上）： 
 
ERROR in ./src/app/api-module/services/factory.service.ts
Module not found: Error: Can't resolve '../sketch-objects' in 'D:\[...]\PhpStorm\vector-sketch\src\app\api-module\services'
 @ ./src/app/api-module/services/factory.service.ts 8:0-51
 
 虽然具有以下作品的导入： 
 
import {Scene} from '../sketch-objects/scene';
 

 只是为了理解：我正在编写一个处理threeJS的应用程序，并希望创建某种工厂，根据给定的特定字符串构建threeJS对象（或者更确切地说，围绕threeJS对象的包装器）。例如我有功能 
 
// factory.service.ts
import * as lib from './lib'

...
create(objectType: string): any {

  let threeObject = lib[objectType]();
  return threeObject;
}
 

 我感谢任何帮助，谢谢。 
 bertiooo 

I'm working with Angular 2 and Typescript. I'm trying to create a collection of classes, each defined in its own file, and want to be able to import them with a single (or perhaps) more lines.
 
Something similar like this:
 
// lib/foo.ts
export class Foo {}

// lib/bar.ts
export class Bar {}

// lib/index.d.ts
export * from './foo';
export * from './bar';

// app.component.ts
import * as lib from './lib';

...
let foo = new lib.Foo();
let bar = new lib.Bar();
 
I searched a while through the internet, and tried a lot of possible ways in my code, but none of them seems to work. For example, in this Stackoverflow answer, it seems to be the same syntax as mine (the code just above).
 
So maybe this is an angular specific issue?
 
Here's the full error message I receive, when building with "ng serve" (on the angular cli):
 
ERROR in ./src/app/api-module/services/factory.service.ts
Module not found: Error: Can't resolve '../sketch-objects' in 'D:\[...]\PhpStorm\vector-sketch\src\app\api-module\services'
 @ ./src/app/api-module/services/factory.service.ts 8:0-51
 
While having an import like the following works:
 
import {Scene} from '../sketch-objects/scene';
 

 Just for understanding: I am programming an app which deals with threeJS, and want to create some sort of factory, which builds threeJS objects (or more precisely, a wrapper around a threeJS object) according to a specific string given in. For example I have a function
 
// factory.service.ts
import * as lib from './lib'

...
create(objectType: string): any {

  let threeObject = lib[objectType]();
  return threeObject;
}
 

 I appreciate any help, Thanks. 
 bertiooo

原文：https://stackoverflow.com/questions/45118418