React Summit

React Summit 2023

The talks explore various misleading patterns and concepts in React, that seem to be “common knowledge”, but which a lot (if not most) developers either get wrong or are just not aware of those. Some examples, covered in the talk (and more): * that “react component re-renders when its props change” (this is not true) * that wrapping a component in React.memo will prevent its re-render (not always true) * that use of Context causes re-renders and is bad for performance (not always true, sometimes Context can actually reduce the number of re-renders in the app) * that creating an element like this `const A = &lt;Child /&gt;` is when the Child's render lifecycle is triggered (not true)

React Myths And Legends

React Summit 2022

React is a fantastic tool to implement complicated applications fast, we all know it. But are they going to be fast when implemented fast? Let’s talk about re-renders and their danger in react: how easy it is to make a mistake, why some small mistakes can have a huge downstream effect, and how to avoid and prevent them.This is a deep-dive type of talk, that focuses on why React components re-render, what kind of performance impact it can have, and what to do about it