Key insights

• ⚛️ React team introduces a new compiler to dramatically improve developer experience, leading to performance improvements and code simplification.
• 🔄 Frontend developers are shifting from jQuery to ReactJS with the new compiler, resulting in improved performance and simplified code.
• 📷 Meta is leveraging React's new compiler for Instagram, yielding performance improvements and simplified code.
• 🚀 React's upcoming compiler will eliminate the need for useMemo and useCallback, leading to simplified code and reduced mental boilerplate.
• 🗑️ Removal of features like memo, forward ref, and server actions in React may simplify the API and improve the overall developer experience.
• 🤝 React's optimistic UI allows for instant updates based on expected changes, and the use hook serves as a versatile alternative for working with promises and React context.
• 🔮 React introduces improvements with suspense and error boundaries, while major frameworks are increasingly converging in their abstractions.

Q&A

• What new improvements did React introduce in terms of error handling and asynchronous operations?

  React introduced improvements with suspense for handling loading state and error boundaries for handling rejected promises. It also highlighted the trend of major frameworks becoming increasingly similar in their abstractions with a proposal for a unified framework in the browser.

• How does React's use hook address challenges with promises and React context?

  The use hook in React is a versatile alternative for working with promises and React context. It provides a solution for challenges faced when working with promises in React, including those encountered with async await in server components like Next.js.

• What features is React removing, and how will it affect the developer experience?

  React is removing memo, forward ref, and server actions. This removal is expected to simplify the API and improve the overall developer experience.

• What impact will React's upcoming compiler have on the code and existing hooks?

  React's upcoming compiler will simplify code and eliminate the need for useMemo and useCallback hooks. It will reduce mental boilerplate and bring significant benefits to developers.

• Why are front-end developers moving away from jQuery to use ReactJS with a new compiler?

  Front-end developers are shifting from jQuery to ReactJS with a new compiler due to performance improvements, code simplification, and the adoption of the compiler by platforms like Instagram, resulting in performance gains and simplified code. Additionally, React's useMemo hook addresses inefficient state computations.

• What did the React team introduce to improve developer experience?

  The React team introduced a compiler to dramatically improve the developer experience. This compiler is aimed at simplifying code and eliminating the need for certain hooks like useMemo and useCallback.

• 00:00 React team fixed React with a compiler, jQuery announced version 4.0 with significant changes.
• 00:40 Frontend developers are moving away from jQuery to use ReactJS with a new compiler, offering performance improvements and code simplification. React's useMemo hook addresses inefficient state computations.
• 01:26 React's upcoming compiler will simplify code and make use memo and use callback obsolete.
• 02:03 React is removing some features like memo, forward ref, and server actions, which may impact the developer experience. The removal may simplify the API and improve the overall experience.
• 02:46 React's optimistic UI updates instantly based on expected changes, but working with promises in React can be challenging. The use hook is a versatile alternative that works on both promises and React context.
• 03:31 React introduces improvements with suspense and error boundaries, while major frameworks are becoming increasingly similar in their abstractions.