TLDR Web Dev · ARTICLES & TUTORIALS
IMPLEMENTING REACT FROM SCRATCH
Summary from the TLDR Web Dev newsletter
This article details the process of building a React-like library from scratch, providing insights into its internal workings and design decisions. It starts by implementing a core rendering model, including components, virtual DOM, and reconciliation, showing how React constructs and updates the UI. It then goes into the implementation of essential hooks like `useState`, `useRef`, `useEffect`, and `useMemo`. Finally, the article discusses the implementation of `useCallback` and `useContext`, showing off the challenges and solutions involved in managing state and context sharing within a component tree.