Book Image

Rapid Application Development with AWS Amplify

By : Adrian Leung
Book Image

Rapid Application Development with AWS Amplify

By: Adrian Leung

Overview of this book

AWS Amplify is a modern toolkit that includes a command line interface (CLI); libraries for JS, iOS, and Android programming; UI component libraries for frameworks like React, Angular, and Vue.js for web development, and React Native and Flutter for mobile development. You'll begin by learning how to build AWS Amplify solutions with React and React Native with TypeScript from scratch, along with integrating it with existing solutions. This book will show you the fastest way to build a production-ready minimum viable product (MVP) within days instead of years. You'll also discover how to increase development speed without compromising on quality by adopting behavior-driven development (BDD) and Cypress for end-to-end test automation, as well as the Amplify build pipeline (DevOps or CI/CD pipeline) to ensure optimal quality throughout continuous test automation and continuous delivery. As you advance, you'll work with React to determine how to build progressive web apps (PWAs) with Amplify and React Native for cross-platform mobile apps. In addition to this, you'll find out how to set up a custom domain name for your new website and set up the AWS Amplify Admin UI for managing the content of your app effectively. By the end of this AWS book, you'll be able to build a full-stack AWS Amplify solution all by yourself.
Table of Contents (14 chapters)
Section 1: Getting Ready
Section 2: Building a Photo Sharing App
Section 3: Production Readiness

Integrating the GraphQL API with the ReactJS app

For the ReactJS project, we must open the App.tsx file under the src folder to look at the JavaScript code that was generated by the Amplify CLI. Then, we must change the TypeScript code, as follows:

  1. The following code was generated without any semi-colons. We will add them back in the TypeScript version. This code imports the essential libraries for React, Amplify, and GraphQL:
    import React, { useEffect, useState } from 'react'
    import Amplify, { API, graphqlOperation } from 'aws-amplify'
    import { createTodo } from './graphql/mutations'
    import { listTodos } from './graphql/queries'
  2. The following code block imports your AWS account settings and your own credentials. These have been marked so that they not submitted to GitHub. This is because your credentials are supposed to be private to everyone. Therefore, if someone needs to pull from your repository, they need to set up their own...