Axios instance as fetch implementation

[jeremy-habit]

Hello !

Expected Behavior

My project has an existing Axios client configured and I want to use it as fetch implementation for Apollo-Client http link.

Actual Behavior
I'm working on a nextJs project, and I used the Nextjs example to implement the apollo client : https://github.com/zeit/next.js/tree/canary/examples/with-apollo. If I use 'isomorphic-unfetch' as fetch implementation it's working great.

But if I use my axios instance (which is called 'api' in the code reproduction), i get the following error :

response: { status: 500, statusText: 'Internal Server Error', headers: [Object], config: [Object], request: [ClientRequest], data: 'POST body missing. Did you forget use body-parser middleware?' },

A simple reproduction
`import { ApolloClient } from 'apollo-client';
import { InMemoryCache } from 'apollo-cache-inmemory';
import { HttpLink } from 'apollo-link-http';
import api from '#lib/api/api';

// Update the GraphQL endpoint to any instance of GraphQL that you like
const GRAPHQL_URL = 'https://api.graphql.jobs/';

const link = new HttpLink({
uri: GRAPHQL_URL, // Server URL (must be absolute)
credentials: 'same-origin', // Additional fetch() options like credentials or headers
fetch: api,
});

export default function createApolloClient(initialState, ctx) {
// The ctx (NextPageContext) will only be present on the server.
// use it to extract auth headers (ctx.req) or similar.
return new ApolloClient({
ssrMode: Boolean(ctx),
link,
cache: new InMemoryCache().restore(initialState),
});
}
`

[jeremy-habit]

I used this : https://github.com/lifeomic/axios-fetch and it's working great.

Is someone see an other one solution ?

thank you