The prevalence of accessible React courses and tutorials has helped many junior React developers land their first software engineering gig. Working in a software engineering team is much different from working on personal projects. This presentation will help guide the junior React developer on how to understand and contribute to professional codebases.

This presentation is about testing in React applications. Test-driven development approach for small applications or for the enterprise. Coverage and threshold. Tests components before implementation. How properly mock data or static configs, testing GraphQL integration, best practices, and scalable solutions. In the presentation, we going to see how Test-driven development is uncomfortable in the beginning and how big the benefit of tests is in the end. We going to test components with Apollo Client and hooks. In general, this presentation will cover almost all aspects of TDD in React Applications.

Did you know that about 250 000 websites are published every day? The majority use too heavy fonts, and unnecessary images or utilize redundant libraries generating a carbon footprint.ec0lint is a tool for front-end developers that mitigates the carbon footprint of websites by showing tips on how to create a more climate-friendly code. Thanks to code optimization ec0lint can help in reducing emissions from 4.6 g to ~0.2 g per one view saving 529 kg CO2 for each website (-96%!) annually. In the keynote, I will share what digital ecology is and give you tips and tricks on how to mitigate your digital footprint. I am also planning on sharing information about the tool we created – how it works, what factors exactly lead to the generation of carbon footprint, what are some of the features we coded, how the C02 calculator works, and how anyone can contribute.

Learning about accessibility is like a journey. You find new things as you go along and learn from every place (or theme) you visit. Like with traveling, you learn tips and tricks you later wish you would have known in the beginning - and that's precisely how it's been with my accessibility journey. In this talk, I will share some of these findings and lessons learned. After listening to this talk, you'll have more knowledge on how to avoid some of the mistakes I've made during this wonderful journey. You'll also know more about accessibility and how to learn more about it.