ng 测试运行因 tsconfig 路径映射而失败

Question

I've configured tsconfig.json for path mapping to import like this:

{
    "compilerOptions": {
       "paths" : {
         "@enum/*": [
           "src/app/enum/*"
         ],
         "@util/*": [
           "src/app/util/*"
         ]
       }
    }
}

I've a class OrderService:

import {DateUtil} from "@util/date_util";
@Injectable({providedIn: 'root'})
export class OrderService {

  //Some codes implement here

}

I write test case for class OrderService and run ng test , this issue occurs:

error TS2307: Cannot find module '@util/date_util'.

Anyone can help me to resolve the problem?

Answer 1

You forgot the paths property inside compiler options

{
  "compilerOptions": {
    "paths": {
      "@enum/*": [
        "src/app/enum/*"
      ],
      "@util/*": [
        "src/app/util/*"
      ]
    }
  }
}