Apollo-client: Fetch error hint is not usable at all

[akaRem]

I'm trying to run tests with apollo against my server.

I'm getting this error with some hints.

    Invariant Violation:
    fetch is not found globally and no fetcher passed, to fix pass a fetch for
    your environment like https://www.npmjs.com/package/unfetch.

    For example:
    import fetch from 'unfetch';
    import { createHttpLink } from 'apollo-link-http';

    const link = createHttpLink({ uri: '/graphql', fetch: fetch });

      19 |
      20 |   beforeAll(async () => {
    > 21 |     client = new ApolloClient({ uri: "http://localhost:3000", fetch });
         |              ^

This hint does not help at all, because even if I new to apollo, I can create this link, but I have no Idea where to put it..
Moreover, I'm passing fetch as argument and it should fit, but it doesn't.

export default class DefaultClient<TCache> extends ApolloClient<TCache> {
    constructor(config?: PresetConfig);
}
export interface PresetConfig {
    request?: (operation: Operation) => Promise<void>;
    uri?: string;
    credentials?: string;
    headers?: any;
    fetch?: GlobalFetch['fetch'];
    fetchOptions?: HttpLink.Options;
    clientState?: ClientStateConfig;
    onError?: ErrorLink.ErrorHandler;
    cacheRedirects?: CacheResolverMap;
    cache?: ApolloCache<any>;
    name?: string;
    version?: string;
    resolvers?: Resolvers | Resolvers[];
    typeDefs?: string | string[] | DocumentNode | DocumentNode[];
    fragmentMatcher?: LocalStateFragmentMatcher;
}

  System:
    OS: macOS 10.14.3
  Binaries:
    Node: 11.6.0 - /usr/local/bin/node
    Yarn: 1.13.0 - /usr/local/bin/yarn
    npm: 6.5.0 - /usr/local/bin/npm
  Browsers:
    Chrome: 73.0.3683.86
    Safari: 12.0.3
  npmPackages:
    apollo-boost: ^0.3.1 => 0.3.1

[hwillson]

Issues here are reserved for Apollo Client bugs. You’ll have a much better chance of getting this answered in Apollo’s Spectrum community or on Stack Overflow. Thanks!