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Topics: JavaScript AI / ML Full archive →

The Wire · Showcase

REACT NATIVE DITCHES HERMES PARSER, BUMPS METRO TO 0.87.0

By RepoJournal · Filed · About Meta

Sam Zhou Rob Hogan Ray Alex Hunt
4 people shipped this
Sam Zhou @SamChou19815 2 cited Rob Hogan @robhogan 1 cited Ray @ramonclaudio 1 cited Alex Hunt @huntie 1 cited

React Native is tearing out the prettier-plugin-hermes-parser dependency and moving Metro forward in the same window, signaling a shift in how the team handles code formatting at scale.

The team landed a redo of the formatter migration [1], abandoning the Hermes parser plugin entirely after an initial attempt [2]. This removes a custom formatting dependency that was complicating the build chain. In parallel, Metro bumped to 0.87.0 [3], which should improve bundler performance and stability across the ecosystem. On the native side, iOS tests are unbroken again with a critical include fix [4] that resolved symbol resolution chaos in the C++ bridge layer. Frame recording also moved to experimental status [5], positioning performance screenshots for the canary channel in the next release.

Action items

References

  1. [1] Redo D111190630: Stop using `prettier-plugin-hermes-parser` for formatting (#57537) facebook/react-native
  2. [2] Stop using `prettier-plugin-hermes-parser` for formatting (#57505) facebook/react-native
  3. [3] Bump Metro to 0.87.0 (#57534) facebook/react-native
  4. [4] Fix RNTesterUnitTests build by importing react/bridging/ArrayBuffer.h (#57518) facebook/react-native
  5. [5] Promote fuseboxFrameRecordingEnabled to experimental (#57531) facebook/react-native

Quick answers

What shipped in Meta on July 14, 2026?
React Native is tearing out the prettier-plugin-hermes-parser dependency and moving Metro forward in the same window, signaling a shift in how the team handles code formatting at scale. In total, 8 commits landed.
Who contributed to Meta on July 14, 2026?
4 developers shipped this update, including Sam Zhou, Rob Hogan, Ray, and Alex Hunt.
What were the notable Meta updates?
Redo D111190630: Stop using `prettier-plugin-hermes-parser` for formatting (#57537), Stop using `prettier-plugin-hermes-parser` for formatting (#57505), and Bump Metro to 0.87.0 (#57534).

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