What should Meta teams do about it?

If you use Image.getSize with large images, test immediately — dimensions are now accurate [ref:1] • Upgrade Jest to pick up the webpack/browser compatibility fix [ref:6] • Check your custom test environment setup — Jest now requires clearMocksOnScope support [ref:7]

Which Meta repositories shipped on May 13, 2026?

facebook/react-native, facebook/jest

REACT NATIVE FIXES CRITICAL IMAGE DIMENSION BUG, TYPESCRIPT 6 LANDS

By RepoJournal · Filed 06:03 UTC on May 13, 2026 · About Meta

Image.getSize has been returning wildly wrong dimensions on Android for months — a fix just shipped that reads the actual encoded image instead of Fresco's downsampled bitmap.

The culprit: `Image.getSize` was reading dimensions from Fresco's decoded bitmap, which automatically downsamples large images to screen size [1]. A 4000x3000 image on a 1920x1080 device came back as 1920x1440. The fix switches to `fetchEncodedImage` to read true dimensions before any downsampling. If you've worked around this with manual dimension math, you can finally clean it up.

React Native also upgraded TypeScript to 6.0.3 [2] and aligned `typescript-eslint` across the codebase and Metro, preparing for the jump to TS 6.0 proper. This is internal-facing now but signals the team is moving fast — internal consistency before CLI template rollout.

On the stability front, a new C++ test landed that reproduces a use-after-free race in the Scheduler delegate during JS teardown , hardening the renderer pipeline. Separately, Pressability got a quiet bug fix: the hover-out timeout was being stored in the hover-in variable due to a copy-paste error , causing pointer and mouse events to behave differently.

Jest is patching holes in its own house. Two critical fixes shipped: reverting `node:` protocol imports that broke webpack and browser compatibility [3], and adding graceful fallback for test environments with older `moduleMocker` implementations that don't support `clearMocksOnScope` [4]. If your test setup feels fragile after recent Jest upgrades, these are your fixes.

FAQ

What changed in Meta on May 13, 2026?: Image.getSize has been returning wildly wrong dimensions on Android for months — a fix just shipped that reads the actual encoded image instead of Fresco's downsampled bitmap.
What should Meta teams do about it?: If you use Image.getSize with large images, test immediately — dimensions are now accurate [ref:1] • Upgrade Jest to pick up the webpack/browser compatibility fix [ref:6] • Check your custom test environment setup — Jest now requires clearMocksOnScope support [ref:7]
Which Meta repositories shipped on May 13, 2026?: facebook/react-native, facebook/jest

REACT NATIVE FIXES CRITICAL IMAGE DIMENSION BUG, TYPESCRIPT 6 LANDS

The showcase is a teaser. Your wire is the product.

The showcase is a teaser.
Your wire is the product.