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{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "MetadataObject",
  "anyOf": [
    {
      "oneOf": [
        {
          "title": "CompatibilityConfig",
          "type": "object",
          "required": [

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type Foo = {response: { foo: string}}
type NullableFoo = Foo | null
type ListFoo = Foo[]

type Complex<T> = (((T | null)[][] | null) | null)[]

type ComplexFoo = Complex<Foo>

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{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "SchemaResponse",
  "type": "object",
  "required": [
    "collections",
    "functions",
    "object_types",
    "procedures",
    "scalar_types"

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curl 'https://<project-name>.hasura.app/v1/graphql' \
  -H 'content-type: application/json' \
  --data-binary '{"query":"\n    query IntrospectionQuery {\n      __schema {\n        queryType { name }\n        mutationType { name }\n        subscriptionType { name }\n        types {\n          ...FullType\n        }\n        directives {\n          name\n          description\n          locations\n          args {\n            ...InputValue\n          }\n        }\n      }\n    }\n\n    fragment FullType on __Type {\n      kind\n      name\n      description\n      fields(includeDeprecated: true) {\n        name\n        description\n        args {\n          ...InputValue\n        }\n        type {\n          ...TypeRef\n        }\n        isDeprecated\n        deprecationReason\n      }\n      inputFields {\n        ...InputValue\n      }\n      interfaces {\n        ...TypeRef\n      }\n      enumValues(includeDeprecated: true) {\n        name\n        description\n        isDeprecated\n        deprecationR

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input LoginInfo {
  email: String
  password: String
}

type UserInfo {
  accessToken: String
  userId: Int
}

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todos (
  id integer not null primary key,
  task text not null,
  created_at timestamptz default now,
  is_complete bool default false,
  user_id integer not null foreign key references users(id),
  update_mutation_identifier int default 0
)

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todos (
  id int not null primary key,
  task text not null,
  created_at timestamptz default now,
  is_complete bool default false,
  user_id int not null foreign key references users(id)
)

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// Installation

// yarn add apollo-boost apollo-link-ws subscriptions-transport-ws react-apollo graphql
// npm install --save apollo-boost apollo-link-ws subscriptions-transport-ws react-apollo graphql

import React from 'react';
import { View, Text } from 'react-native';
import { ApolloClient } from 'apollo-client';
import { WebSocketLink } from 'apollo-link-ws';
import { InMemoryCache } from 'apollo-cache-inmemory';

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1. Deploy to Heroku (skip if you already have a Heroku app)

Deploy to Heroku and instantly get a realtime GraphQL API backed by Heroku Postgres:

Note the name of the app

2. Clone the HGE template repo and cd into it

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import React from 'react';
import { Subscription } from 'react-apollo';
import gql from 'graphql-tag';

const ConvertScreen = () => {
  const urlParams = new URLSearchParams(window.location.search);
  const id = urlParams.get('id');

  return (
    <Subscription