React 16.7 Release: Minor Version for Bugfixes, Upcoming Hooks, Installation Guide and Changelog
The React 16.7 release notes explain why bug‑fixes are delivered as a minor version, outline the upcoming Hooks feature, provide installation commands for Yarn, npm and CDN, and list the key changes in React DOM and Scheduler.
React follows semantic versioning, typically using patch versions for bug fixes and minor versions for non‑breaking new features. However, the team sometimes releases a minor version even without new features to provide a reliable patch for critical fixes, ensuring trust in patch releases.
The latest release includes an important performance fix for React.lazy . Although no API changes were made, it is published as a minor version rather than a patch.
Regarding Hooks, they are not yet available in 16.7. The team announced at React Conf that version 16.7 would be the first to include Hooks, but this was a mistake; they will avoid naming unreleased features in future releases. Hooks have been merged behind a feature flag and are currently in testing, with a public release expected in a few months.
Installation instructions: React v16.7.0 is available on npm. To install with Yarn, run the command shown in the image below. To install with npm, run the command shown in the second image. A UMD build is also available via CDN, and detailed installation documentation can be found at https://reactjs.org/docs/installation.html .
Changelog – React DOM:
Fixed performance issues caused by a large number of lazy‑loaded components with React.lazy (issue #14429).
Cleared fields on unmount to prevent memory leaks (issue #14276).
Fixed SSR and context errors when mixing react-dom/[email protected] with React versions <16.6 (issue #14291).
Resolved performance regressions in profiling mode (issue #14383).
Changelog – Scheduler (Experimental):
Messages are now posted to MessageChannel instead of window (issue #14234).
Reduced serialization overhead (issue #14249).
Fixed fallback issues with setTimeout in test environments (issue #14358).
Added debugging methods (issue #14053).
For the full React 16.x roadmap, including server‑rendered Suspense components and Hooks, see the original blog post at https://reactjs.org/blog/2018/12/19/react-v-16-7.html .
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