Unexpected token export jest angular

I read a lot of posts about this problem but I didn't understand how to fix it. I tried many solutions and I have still an error.

 Details:

    /home/work/project/node_modules/ngx-cookie-service/index.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export * from './cookie-service/cookie.service';
                                                                                             ^^^^^^

    SyntaxError: Unexpected token export

      15 |         this.sessionStorage = sessionStorage;
      16 |         this.localStorage = localStorageService;
    > 17 |         this.cookieService = cookieService;
         |                              ^
      18 |     }
      19 |
      20 |     public set(key, value, useSessionStorage = true) {

      at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/script_transformer.js:403:17)
      at Object.<anonymous> (src/myApp/coreModule/services/storageLayer.service.ts:17:30)
      at Object.<anonymous> (src/myApp/itemModule/components/category.component.ts:30:32)

So I added this to my package.json :

  "jest": {
    "transformIgnorePatterns": [
      "node_modules/(?!ngx-cookie-service)"
    ]
  }

The problem is still there. Anybody can help ? Should I use "moduleNameMapper" to mock ngx-cookie-service ?

Thank you very much !