react / react/react-native

[TypeScript] [Stylesheet] TS2322 error thrown when `transform` property is used in a style object returned from a function

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#41,869 8 comments 1 reaction 0 assignees View on GitHub

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API: StyleSheet Impact: Regression Issue: Author Provided Repro Needs: Attention Needs: Triage :mag:
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Description

Steps to reproduce
  1. Checkout reproducer
  2. Open terminal and run yarn reproduce

Actual Result: Error is thrown
Expected Result: No error is thrown

More info:

React Native Version

0.73.0

Affected Platforms

Build - Windows

Output of npx react-native info
System:
  OS: Windows 11 10.0.22631
  CPU: (32) x64 13th Gen Intel(R) Core(TM) i9-13900K
  Memory: 107.57 GB / 127.75 GB
Binaries:
  Node:
    version: 18.17.1
    path: C:\Program Files\nodejs\node.EXE
  Yarn:
    version: 1.22.21
    path: ~\AppData\Roaming\npm\yarn.CMD
  npm:
    version: 9.6.7
    path: C:\Program Files\nodejs\npm.CMD
  Watchman: Not Found
SDKs:
  Android SDK: Not Found
  Windows SDK: Not Found
IDEs:
  Android Studio: Not Found
  Visual Studio: Not Found
Languages:
  Java:
    version: 20.0.1
    path: C:\Program Files\Common Files\Oracle\Java\javapath\javac.EXE
  Ruby: Not Found
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 18.2.0
    wanted: 18.2.0
  react-native:
    installed: 0.73.0
    wanted: 0.73.0
  react-native-windows: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: Not found
  newArchEnabled: Not found
iOS:
  hermesEnabled: Not found
  newArchEnabled: Not found
Stacktrace or Logs
the-bug-is-here.ts:8:7 - error TS2322: Type '() => { transform: ({ translateX: number; rotateX?: undefined; } | { rotateX: string; translateX?: undefined; })[]; }' is not assignable to type 'StyleCreator'.
  Call signature return types '{ transform: ({ translateX: number; rotateX?: undefined; } | { rotateX: string; translateX?: undefined; })[]; }' and 'ViewStyle' are incompatible.
    The types of 'transform' are incompatible between these types.
      Type '({ translateX: number; rotateX?: undefined; } | { rotateX: string; translateX?: undefined; })[]' is not assignable to type 'string | (({ perspective: AnimatableNumericValue; } & { rotate?: never; rotateX?: never; rotateY?: never; rotateZ?: never; scale?: never; scaleX?: never; scaleY?: never; ... 4 more ...; matrix?: never; }) | ... 11 more ... | ({ ...; } & { ...; }))[]'.
        Type '({ translateX: number; rotateX?: undefined; } | { rotateX: string; translateX?: undefined; })[]' is not assignable to type '(({ perspective: AnimatableNumericValue; } & { rotate?: never; rotateX?: never; rotateY?: never; rotateZ?: never; scale?: never; scaleX?: never; scaleY?: never; translateX?: never; translateY?: never; skewX?: never; skewY?: never; matrix?: never; }) | ... 11 more ... | ({ ...; } & { ...; }))[]'.
          Type '{ translateX: number; rotateX?: undefined; } | { rotateX: string; translateX?: undefined; }' is not assignable to type '({ perspective: AnimatableNumericValue; } & { rotate?: never; rotateX?: never; rotateY?: never; rotateZ?: never; scale?: never; scaleX?: never; scaleY?: never; translateX?: never; translateY?: never; skewX?: never; skewY?: never; matrix?: never; }) | ... 11 more ... | ({ ...; } & { ...; })'.
            Type '{ translateX: number; rotateX?: undefined; }' is not assignable to type '({ perspective: AnimatableNumericValue; } & { rotate?: never; rotateX?: never; rotateY?: never; rotateZ?: never; scale?: never; scaleX?: never; scaleY?: never; translateX?: never; translateY?: never; skewX?: never; skewY?: never; matrix?: never; }) | ... 11 more ... | ({ ...; } & { ...; })'.
              Type '{ translateX: number; rotateX?: undefined; }' is not assignable to type '{ matrix: AnimatableNumericValue[]; } & { perspective?: never; rotate?: never; rotateX?: never; rotateY?: never; rotateZ?: never; scale?: never; scaleX?: never; scaleY?: never; translateX?: never; translateY?: never; skewX?: never; skewY?: never; }'.
                Property 'matrix' is missing in type '{ translateX: number; rotateX?: undefined; }' but required in type '{ matrix: AnimatableNumericValue[]; }'.
Reproducer

https://github.com/hieucd04/reproducer-react-native

Screenshots and Videos

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the reproducer's the-bug-is-here.ts and run yarn reproduce to confirm the TS2322 error for a function-returned style using transform. Read the referenced pull request and commit, then verify that the reproducer no longer reports the type error on React Native 0.73.

Written by the indexing model from the issue text.

Assessment

Tech stack
react-native, typescript
Domain
mobile
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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