The article explores the long-requested feature of React Context selectors, which would allow components to subscribe to only specific parts of context. It reviews historical attempts like calculateChangedBits and workarounds, then examines how the upcoming React Compiler may automatically optimize context consumers, potentially eliminating the need for manual selectors.
Background
The React Compiler is an optimization tool designed to reduce manual memoization by automatically memoizing components and hooks. Context selectors have been a frequent request to improve performance when many components consume large context objects.
- Source
- Lobsters
- Published
- Oct 12, 2026 at 02:26 AM
- Score
- 6.0 / 10