Racy NPM | npm.io

Racy

A blazing fast zero-configuration async server-side React with GraphQL toolbelt.

Stack

Setup

npm init -f
yarn add racy

package.json

"scripts": {
  "dev": "racy dev",
  "build": "racy build",
  "serve": "racy serve",
  "export": "racy export",
  "start": "NODE_ENV=production racy build && racy serve",
  "static": "NODE_ENV=production npm run export && racy static"
}

How to

CLI

racy dev - Develop an App
racy build - Build an App for dynamically serving
racy serve - Dynamically serve an App
racy export - Export an App for statically serving
racy static - Statically serve an App
racy graphql schema - Fetch and save GraphQL schema to a file
racy graphql fragments - Fetch and save GraphQL fragment types to a file

How to create a simple React-App?

Just enter yarn add react and create a App.js in your project root folder.

App.js

import React, { Fragment as F } from 'react';
import Helmet from 'react-helmet';
import styled from 'styled-components';

const Headline = styled.h1`
  color: blue;
`;

export default async ({ name, version, port }) => (
  <F>
    <Helmet>
      <meta charSet="utf-8" />
      <title>React-App</title>
    </Helmet>
    <Headline>
      Racy Basic App Example {name} {version}
    </Headline>
  </F>
);

React Basic Example

How to customize the default configuration?

Just create a config.js in your project root folder.

config.js

export default {
  // Listen on port?
  port: process.env.PORT || 8080,
  // GraphQL prefetch on server?
  shouldPrefetch: false,
  // SSR mode only?
  ssrMode: false,
};

React Advanced Example

How to map a component to a route?

React-Router-Config

App.js

import React from 'react';
import Home from './components/Home';
import About from './components/About';
import NotFound from './components/NotFound';

export default async () => [
  { path: '/', exact: true, component: Home },
  { path: '/about', exact: true, component: About },
  { component: NotFound },
];

React Advanced Example

How to use dynamic imports and code splitting?

App.js

import React from 'react';

export default async () => {
  const { default: Home } = await import('./components/Home');
  const { default: About } = await import('./components/About');

  return [
    { path: '/', exact: true, component: Home },
    { path: '/about', exact: true, component: About },
  ];
};

React Advanced Example

How to use GraphQL on the client?

App.js

import React, { Fragment as F } from 'react';
import { Query } from 'react-apollo';

import GITHUB_QUERY from './Github.gql';

export default async ({ name, version }) => {
  return (
    <F>
      <h1>
        App: {name} {version}
      </h1>
      <Query query={GITHUB_QUERY}>
        {({ data, error, loading }) => {
          if (loading) return <div>loading ...</div>;
          if (error) return <div>{error.message}</div>;
          return <pre>{JSON.stringify(data, null, 4)}</pre>;
        }}
      </Query>
    </F>
  );
};

config.js

export default {
  // Listen on port
  port: process.env.PORT || 8080,
  // GraphQL URL for GraphQL queries
  graphqlUrl: process.env.GRAPHQLURL || 'https://www.graphqlhub.com/graphql',
  // Import fragment types file to resolve union and interface types
  createFragmentTypes: async () => await import('./fragmentTypes.json'),
  // Enable prefetching on server-side
  shouldPrefetch: true,
};

React GraphQL Example

How to use customize Apollo links?

config.js

import { withClientState } from 'apollo-link-state';
import resolvers from './resolvers';

export default {
  port: process.env.PORT || 8080,
  createLink: async ({ cache }) =>
    withClientState({
      cache,
      resolvers,
      defaults: {
        visible: false,
      },
    }),
};

React GraphQL Link Example

How to extend Express with additional middleware?

Just create a express-server.js in your project root folder.

express-server.js

import morgan from 'morgan';
import cors from 'cors';
import compression from 'compression';
import examples from './examples';

export default ({ config, app }) => {
  app.use(morgan('combined'));
  app.use(cors());
  app.use(compression());

  app.use('/api/examples', examples);
};

Express Middleware Example

How to create a GraphQL server?

Just create a graphql-server.js in your project root folder.

graphql-server.js

export default ({ config }) => ({
  context: ({ req }) => ({ req, config }),
  typeDefs: `type Todo {
      id: ID!
      description: String!
      done: Boolean
    }

    type Query {
      todos: [Todo]
    }`,
  resolvers: {
    Query: {
      todos: () => [{ id: 1, description: 'Demo 1', done: false }],
    },
  },
});

GraphQL Server Example

How to add GraphQL subscriptions on the client?

config.js

import { split } from 'apollo-link';
import { HttpLink } from 'apollo-link-http';
import { WebSocketLink } from 'apollo-link-ws';
import { getMainDefinition } from 'apollo-utilities';

export default {
  port: 8080,
  createLink,
};

function createLink({ isServer }) {
  const httpLink = new HttpLink({
    uri: `http://localhost:8080/graphql`,
  });

  const wsLink = isServer
    ? null
    : new WebSocketLink({
        uri: `ws://localhost:8080/graphql`,
        options: {
          reconnect: true,
        },
      });

  return isServer
    ? httpLink
    : split(
        ({ query }) => {
          const { kind, operation } = getMainDefinition(query);
          return kind === 'OperationDefinition' && operation === 'subscription';
        },
        wsLink,
        httpLink,
      );
}

App.js

import React, { Fragment as F } from 'react';
import { Subscription } from 'react-apollo';
import gql from 'graphql-tag';

const GRAPHQL_SUBSCRIPTION = gql`
  subscription OnChanged {
    changed {
      id
      name
    }
  }
`;

export default async () => (
  <Subscription subscription={GRAPHQL_SUBSCRIPTION}>
    {({ data }) => <pre>{JSON.stringify(data, null, 2)}</pre>}
  </Subscription>
);