[Java to Typescript-fetch] missing appropriate loader

[SimpleCookie]

Description

Hi, if this is due to my lack of knowledge then my excuses.
I am receiving the following error:

Module parse failed: Unexpected token (15:7)
You may need an appropriate loader to handle this file type.
> export interface ConfigurationParameters {
|     apiKey?: string | ((name: string) => string);
|     username?: string;

even if I am just trying to do a console.log() of my imported API-module.
I feel like I am missing something and I can't seem to find it it the documentation, google nor figure it out myself.

Swagger-codegen version

2.4.8 swagger-codegen-maven-plugin

Swagger declaration file content or url

Unfortunately I cannot disclose this information due to client NDA.

Similar references

#9459
#8024

[SimpleCookie]

I personally solved the issue by using the fork openapi-generator.