Initial commit

server/app.js

@@ -0,0 +1,14 @@
+const express = require('express');
+const graphqlHTTP = require('express-graphql');
+
+const schema = require('./schema/schema');
+
+const app = express();
+
+app.use('/graphql', graphqlHTTP({
+  schema
+}));
+
+app.listen(4000, () => {
+  console.log('Listening on http://localhost:4000');
+});

server/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "graphql-playground",
+  "version": "1.0.0",
+  "description": "Playing with GraphQL to learn it",
+  "main": "index.js",
+  "scripts": {
+    "start": "nodemon app",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/seigler/graphql.git"
+  },
+  "author": "Joshua Seigler",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/seigler/graphql/issues"
+  },
+  "homepage": "https://github.com/seigler/graphql#readme",
+  "dependencies": {
+    "express": "^4.17.1",
+    "express-graphql": "^0.9.0",
+    "graphql": "^14.6.0"
+  },
+  "devDependencies": {
+    "nodemon": "^2.0.2"
+  }
+}

server/schema/schema.js

@@ -0,0 +1,33 @@
+const graphql = require('graphql');
+
+const {
+  GraphQLObjectType,
+  GraphQLString,
+  GraphQLSchema
+} = graphql;
+
+const BookType = new GraphQLObjectType({
+  name: 'Book',
+  fields: () => ({
+    id: { type: GraphQLString },
+    name: { type: GraphQLString },
+    genre: { type: GraphQLString }
+  })
+});
+
+const RootQuery = new GraphQLObjectType({
+  name: 'RootQueryType',
+  fields: {
+    book: {
+      type: BookType,
+      args: { id: { GraphQLString } },
+      resolve (parent, { id }) {
+        // code to retrieve data from db or other source
+      }
+    }
+  }
+});
+
+module.exports = new GraphQLSchema({
+  query: RootQuery
+});