Usage:

// resources.js
import { createResource } from "@cyca/simple-create-resource";

const API = createResource(url => (
  fetch(url).then(res => res.json())
);

const FirebaseDoc = createResource(path => (
  firebase.firestore().doc(path).get()
))

export { API, FirebaseDoc }

// somefile.js
import { API } from './resources';

API.preload('/thing');
const stuff = API.read('/thing');
API.clear('/thing');
API.clear(); // all keys