AI Changelog

New Features

Profiler: Introduces a new Profiler component that collects render time metrics, allowing developers to analyze performance more effectively. This experimental API is initially exported as React.unstable_Profiler.
Timeout: Adds a new Timeout component type to React, which is conditionally included based on the enableSuspense feature flag, enhancing the capabilities of concurrent rendering.

Error Handling: Enhances error messages for context consumers, making it clearer when multiple renderers clash in tests, improving debugging for developers.
ReactDOM: Updates the handling of getDerivedStateFromProps to ensure it only fires when props or state change, preventing unnecessary re-renders and improving performance.
Testing: Adds integration tests for the new context API, ensuring that hydration works correctly and improving overall test coverage.

Fix: Resolves an issue where functional components using the legacy context API do not receive warnings in StrictMode, ensuring better compliance with best practices.
Fix: Addresses a bug that caused double-firing of submit events in forms, ensuring that events are only triggered once, leading to a smoother user experience.
Fix: Corrects a context propagation bug that could lead to unexpected behavior when using new context providers alongside legacy ones, enhancing stability.

Improve: Updates the React documentation to clarify the usage of the Profiler component, helping developers understand its benefits and how to implement it effectively.
Enhance: Introduces a new testing utility to help developers simulate timeouts in their tests, making it easier to validate asynchronous behavior in components.

Profiler: Introduces a new Profiler component that collects render time metrics, allowing developers to analyze performance more effectively. This experimental API is initially exported as React.unstable_Profiler.
Timeout: Adds a new Timeout component type to React, which is conditionally included based on the enableSuspense feature flag, enhancing the capabilities of concurrent rendering.

Error Handling: Enhances error messages for context consumers, making it clearer when multiple renderers clash in tests, improving debugging for developers.
ReactDOM: Updates the handling of getDerivedStateFromProps to ensure it only fires when props or state change, preventing unnecessary re-renders and improving performance.
Testing: Adds integration tests for the new context API, ensuring that hydration works correctly and improving overall test coverage.

Fix: Resolves an issue where functional components using the legacy context API do not receive warnings in StrictMode, ensuring better compliance with best practices.
Fix: Addresses a bug that caused double-firing of submit events in forms, ensuring that events are only triggered once, leading to a smoother user experience.
Fix: Corrects a context propagation bug that could lead to unexpected behavior when using new context providers alongside legacy ones, enhancing stability.

Improve: Updates the React documentation to clarify the usage of the Profiler component, helping developers understand its benefits and how to implement it effectively.
Enhance: Introduces a new testing utility to help developers simulate timeouts in their tests, making it easier to validate asynchronous behavior in components.