How React 19 Almost Broke The Web

This podcast episode explores the changes in React 19, specifically focusing on the concept of suspense and its role in controlling the rendering process. It discusses the challenges and trade-offs involved in using suspense for data fetching, the impact of suspense on component composition, and the effects of React's new model on suspense and the loading state in components. The episode also delves into the challenges of pre-rendering siblings in suspense, the controversy surrounding fetch on render, and the difficulties of managing stale classes in a codebase. It highlights the importance of efficient and performant data fetching, the limitations of React Suspense, and the ongoing debate surrounding its usage. The React team's recent changes and misjudgment regarding suspense boundaries and data fetching in React 19 are acknowledged, with a focus on addressing the concerns raised by the community. The episode concludes by discussing the behavior changes in React 19, the challenges faced by the React team, and the potential of suspense to transform the React ecosystem.