copilot/packages/cp-frontend/src/state/store.js

import { createStore, combineReducers, applyMiddleware, compose } from 'redux';
import { ApolloClient, createNetworkInterface } from 'react-apollo';
import state from './state';

export const client = new ApolloClient({
  dataIdFromObject: o => {
    const id = o.slug
      ? o.slug
      : o.id
          ? o.id
          : o.uuid
              ? o.uuid
              : o.timestamp
                  ? o.timestamp
                  : o.name ? o.name : 'apollo-cache-key-not-defined';
    return `${o.__typename}:${id}`;
  },
  networkInterface: createNetworkInterface({
    uri: `http://${window.location.hostname}:3000/graphql`
  })
});

export const store = createStore(
  combineReducers({
    ui: s => {
      return s ? s : state.ui;
    },
    apollo: client.reducer()
  }),
  {}, // Initial state
  compose(
    applyMiddleware(client.middleware()),
    // If you are using the devToolsExtension, you can add it here also
    // eslint-disable-next-line no-negated-condition
    typeof window.__REDUX_DEVTOOLS_EXTENSION__ !== 'undefined'
      ? window.__REDUX_DEVTOOLS_EXTENSION__()
      : f => f
  )
);