undici-types breaks sbFetch.ts

[Theofilos-Chamalis]

When the storyblok-js-client is used in a project that has another package that uses the undici-types package in package-lock.json, the sbFetch.ts throws a type error.

Expected Behavior

No error should be thrown and the project should be able to build with storyblok-js-client without issues.

Current Behavior

Our current Next.js project uses the following dependencies:

1. @types/node
2. storybook
3. commitlint

and when either of these dependencies is upgraded to their latest version, the undici-types package is introduced in our package-lock.json file. Then, when we try building our next.js project, we are greeted with the following error:

./node_modules/storyblok-js-client/src/sbFetch.ts:33:50
Type error: No overload matches this call.
  Overload 1 of 2, '(input: RequestInfo, init?: RequestInit | undefined): Promise<Response>', gave the following error.
    Argument of type 'string | Request | URL | URL | Request' is not assignable to parameter of type 'RequestInfo'.
      Type 'Request' is not assignable to type 'RequestInfo'.
        Property 'duplex' is missing in type 'Request' but required in type 'import("/home/theo/Projects/EF/product-sites/node_modules/undici-types/fetch").Request'.
  Overload 2 of 2, '(input: RequestInfo | URL, init?: RequestInit | undefined): Promise<Response>', gave the following error.
    Argument of type 'string | Request | URL | URL | Request' is not assignable to parameter of type 'RequestInfo | URL'.
      Type 'Request' is not assignable to type 'RequestInfo | URL'.
        Property 'referrer' is missing in type 'import("/home/theo/Projects/EF/product-sites/node_modules/undici-types/fetch").Request' but required in type 'Request'.
  31 |          this.timeout = $c?.timeout ? $c.timeout * 1000 : 0
  32 |          this.responseInterceptor = $c.responseInterceptor
> 33 |          this.fetch = (...args) => ($c.fetch ? $c.fetch(...args) : fetch(...args))
     |                                                         ^
  34 |          this.ejectInterceptor = false
  35 |          this.url = ''
  36 |          this.parameters = {} as ISbStoriesParams

Steps to Reproduce

1. Create a new Next.js project using npx create-next-app@latest
2. Switch to using Node.js v20
3. Install the following devDependencies: @types/node , storybook , commitlint at their latest versions
4. Make sure that package-lock.json includes the undici-types package
5. Try building the project using next build