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Summary: This change aligns requestAnimationFrame implementation used in Jest environment with web standard, and with the implementation that runs in the application environment. As per specification https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame#parameters – requestAnimationFrame callback gets a single parameter, which represents the current frame timestamp. The current polyfill maps requestAnimationFrame directly to setTimeout which makes the callback execute without any parameters. ## Changelog [General] [Fixed] - Jest mocked requestAnimationFrame callbacks now receive a timestamp parameter Pull Request resolved: https://github.com/facebook/react-native/pull/35919 Test Plan: 1. execute jest test suite to make sure nothing breaks 2. add the below code to one of the tests: ``` jest.useFakeTimers(); requestAnimationFrame((timestamp) => console.log("rAF", timestamp)); jest.runOnlyPendingTimers(); jest.useRealTimers(); ``` this code will print `undefined` before and numer `0` representing the mocked frame time after this change. Reviewed By: jacdebug Differential Revision: D42676544 Pulled By: robhogan fbshipit-source-id: 363dc506ccc4bd034408fbb35ad3151875a8d309 |
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| .. | ||
| private | ||
| assetFileTransformer.js | ||
| local-setup.js | ||
| mockComponent.js | ||
| mockModal.js | ||
| mockNativeComponent.js | ||
| MockNativeMethods.js | ||
| mockScrollView.js | ||
| react-native-env.js | ||
| renderer.js | ||
| setup.js | ||