Sam and Ryan talk about the new useEvent RFC, and how useEvent lets you extract event logic from your side effects. They also read and discuss Dan Abramov’s recent Twitter thread on how useEvent addresses the problems people are encountering with React 18’s Strict Mode behavior around running effects twice on mount.

Topics include:

• 0:00 - Intro
• 0:34 - How useEvent relates to the changes to Strict Mode in React 18
• 12:04 - Dan Abramov’s thread on how useEvent relates to “fixing” useEffect
• 37:37 - What’s the correct mental model for useEvent
• 53:55 - How useEvent is different from useCallback

Links:

• useEvent RFCS in the React repo
• Dan Abramov’s thread on how useEvent relates to “fixing” useEffect
• Dan’s RFC comment on why useEvent is not just a “nicer” useCallback