DevDays Vilnius 2019


May 14-16, 2019

Maurice de Beijer

ABL – The Problem Solver, Netherlands

About Maurice de Beijer

Maurice de Beijer is an independent software consultant and trainer. He specializes in JavaScript, React, Angular 2+ and ASP.NET MVC. His work includes a large, global, safety application for the oil and gas industry. Maurice is also active in the open source community. He teaches ECMAScript, TypeScript, React, Angular 5 and ASP.NET MVC courses. Since 2005, he has received Microsoft’s Yearly Most Valuable Professional Award. Further, Maurice is active in the Dutch dotNed user group and helps organize its meetings.


The New React


The React team rewrote the book on developing components. Before we had a choice between classes and functional components. Yet many components needed to be classes. A functional component was often too limited. Now, using hooks, we can extend functional components to be as powerful as we want.

Join Maurice in this interactive workshop -you will learn all about using the different standard hooks. You will start extracting code from components into you own custom hooks. But be warned, hooks are like a drug. Once tried you too will be hooked. Your components will never be the same again.


  • Part 1: Introducing React Hooks presentation:
    • What are hooks?
    • What problem do hooks solve?
    • What are some of the tradeoffs with hooks?
  • Part 2: Using the basic React hooks
    • Start with your first stateful hook.
    • Handle asynchronous side effects with the useEffect hook
    • Use the useContext hook to make context easy.
    • Create your own custom hooks
  • Part 3: Using the more advanced hooks
  • Part 4: Concurrent React
    • Use lazy() to automatically bundle split and lazy load parts of your application
    • Add strict mode to ensure your React components will work with concurrent React
    • Use concurrent rendering with ReactDOM
    • Leverage React cache to make async loading of data even easier


The goal of this workshop is to introduce you to the future way of coding React components and applications.

Target audience

The target audience is every React developer interested in the future of component development with React hooks as well as concurrent rendering with React.

Technical requirements

– Installations:

               – A laptop with Node 8 and NPM 8 or later and your favorite code editor installed on it.

– Technical knowledge:

               – Basic knowledge of React