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Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.


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Use Relay without a GraphQL server






Relay Local Schema Travis npm

Use Relay without a GraphQL server.

Codecov Discord


import { Environment } from 'react-relay';
import { Network } from 'relay-local-schema';

import schema from './data/schema';

const environment = new Environment({
  network: Network.create({ schema }),
  /* ... */

This will execute queries against the specified schema locally, rather than against a separate GraphQL server.

You can also specify a GraphQL.js rootValue or contextValue:

const environment = new Environment({
  network: Network.create({
    rootValue: 'foo',
    contextValue: 'bar',
  /* ... */

For more control over the network layer, you can use createFetch to create just the fetch function.

import { Environment, Network } from 'react-relay';
import { createFetch } from 'relay-local-schema';

import schema from './data/schema';

const environment = new Environment({
  network: Network.create(createFetch({ schema })),
  /* ... */


This is intended for exploratory work, integration tests, demos, and working with local data. This is not generally intended as a substitute for a remote GraphQL back end in production.