graphql_schema.js

const express = require('express');
const graphql = require('express-graphql');
const graphqlTools = require('graphql-tools');

const app = express();

// Sample Data
const blogsData = [{_id: 1, title: 'Hello', content: 'World'}];

// Simple Blog schema with ID, Title and Content fields
const typeDefs = `
    type Blog{
        _id: Int,
        title: String!,
        content: String!
    }    
`;

// Resolver to match the GraphQL query and return data
const resolvers = {};

// Build the schema with Type Definitions and Resolvers
const schema = graphqlTools.makeExecutableSchema({typeDefs, resolvers});

app.use('/graphiql', graphql({
    graphiql: true,
    schema
}));

app.listen(3000)