Allow for invalid URLs (possible in custom `fetch`)

[cuibonobo]

I've got a new problem : it returns ERR_INVALID_URL when using an url that starts with /, which, using normal fetch, would indeed be incorrect, but using a custom one in an SSR context, is proper.

Thanks

Originally posted by @KaKi87 in #6 (comment)

[cuibonobo]

Fixed in #12.

[KaKi87]

Thanks, unfortunately, I'm now experiencing the following error :

ReferenceError: fetchAdapter is not defined
    at /node_modules/@haverstack/axios-fetch-adapter/lib/index.d.ts:10:16

Thanks

[cuibonobo]

I reverted a change that may have been causing this. Version 0.12.0 was tested against an application where this library is used and the tests are now passing.

[KaKi87]

Thanks, one last thing though ;
The following doesn't work :

import { createFetchAdapter } from '@haverstack/axios-fetch-adapter';

Only the following does :

import axiosFetchAdapter from '@haverstack/axios-fetch-adapter';
const { createFetchAdapter } = axiosFetchAdapter;

Thanks