# `react-doctor/rn-pressable-shared-value-mutation`

Review measured press latency without replacing an accessible Pressable with a tap-only GestureDetector by default

- **Status:** Active
- **Category:** React Native
- **Assessment:** Evidence-required risk
- **Required evidence:** source code
- **Default configuration:** Enabled
- **Default severity:** warn
- **Scope:** React Native
- **Active when:** advisory only pending detector narrowing; requires measured release-build press-feedback latency and a compatible installed Reanimated API
- **Requirements:** react-native
- **Tags:** react-native, test-noise
- **Priority:** 30 (P3)
- **Source:** oxlint-plugin-react-doctor
- **Rule set:** oxlint-plugin-react-doctor 0.9.3 (prompt schema 2)

## Validation prompt

Confirm the detector match and collect the required evidence before deciding whether an edit is warranted.

Treat the current diagnostic as an unconditional advisory rather than proof of a defect: the detector does not itself measure latency or gate on the installed Reanimated version. Confirm release-build evidence shows press-feedback latency and that the existing Pressable semantics cannot be preserved with that version's supported animated-Pressable APIs. Do not apply this when it would create a tap-only GestureDetector that the prefer-Pressable rule immediately reverses.

## Evidence boundary

The diagnostic proves only that the detector's modeled source pattern matched. It does not prove runtime impact, product intent, rendered failure, or that one remediation is correct.

Establish the environment, explicit repository policy, relevant exceptions, and required rendered or runtime evidence before deciding the occurrence. This page’s Assessment and Required evidence fields define the review contract.

Default severity is registry metadata. Use the occurrence's JSON severity after repository configuration when ordering real findings.

Record one outcome:

- **Confirmed failure:** The required evidence establishes the violation.
- **Rejected:** A documented exception or false-positive predicate applies.
- **Needs evidence:** Named evidence can still be collected.
- **Unavailable:** Required evidence cannot be collected in this run.
- **Waived with evidence:** An authorized, scoped exception applies to an established failure.
- **Observation:** The review records an optional tradeoff without claiming a defect.

A waiver records its scope, authority, evidence, and review or expiry condition. It is not a pass or false positive.

## Fix prompt

Apply this candidate correction only after the required evidence confirms the risk.

Make no code change without the required measurement. When evidence justifies work, keep Pressable semantics and use the installed Reanimated version's supported animated-Pressable pattern. Use GestureDetector only for pan, pinch, multi-tap, composed gestures, or external-gesture coordination. Verify role, disabled state, hit slop, cancellation, and press behavior on device.

## Repository-wide copy prompt

Use this only for a repository-wide pass after validating each occurrence. For one occurrence, use the occurrence-level guidance above.

````text
Fix every confirmed `react-doctor/rn-pressable-shared-value-mutation` diagnostic in the current repository.

Required change:
- Make no code change without the required measurement. When evidence justifies work, keep Pressable semantics and use the installed Reanimated version's supported animated-Pressable pattern. Use GestureDetector only for pan, pinch, multi-tap, composed gestures, or external-gesture coordination. Verify role, disabled state, hit slop, cancellation, and press behavior on device.

Validation before editing:
Treat the current diagnostic as an unconditional advisory rather than proof of a defect: the detector does not itself measure latency or gate on the installed Reanimated version. Confirm release-build evidence shows press-feedback latency and that the existing Pressable semantics cannot be preserved with that version's supported animated-Pressable APIs. Do not apply this when it would create a tap-only GestureDetector that the prefer-Pressable rule immediately reverses.

Constraints:
- Make the smallest change that fixes the root cause.
- Preserve behavior and interfaces unrelated to this diagnostic.
- Reuse existing project components, utilities, and conventions.
- Do not introduce render-phase side effects, render-phase state updates, or Hooks rule violations.
- Before editing, inspect the manifest, lockfile, native app configuration, React Native and Expo versions, and New Architecture status.
- Also inspect the Reanimated major, installed list-library majors, and every affected platform-specific file.
- Do not add or upgrade a native dependency, change linking, or alter Pods/Gradle setup unless explicitly authorized.
- Do not enable the New Architecture or change Expo/native configuration unless explicitly authorized.
- Preserve navigation, gesture, keyboard, safe-area, accessibility, lifecycle, and platform semantics; do not treat them as file-local import substitutions.
- Verify behavior in a release build on each affected device platform in scope. Name any unavailable platform instead of claiming it passed.
- Adapt identifiers and framework details instead of copying blindly.
- Do not disable the rule or suppress matching code.
- Confirm this rule is enabled for the project: `advisory only pending detector narrowing; requires measured release-build press-feedback latency and a compatible installed Reanimated API`.

Assessment:
- Record detector evidence, applicability facts, assumptions, missing evidence, and the rule class for this occurrence.
- Return one outcome: Confirmed failure, Rejected, Needs evidence, Unavailable, Waived with evidence, or Observation.
- A waiver records the established failure, scope, authority, evidence, and review or expiry condition. It is not a pass or false positive.

Verification:
- Run focused tests for the changed behavior.
- Run React Doctor and confirm this diagnostic no longer appears from changed code.
- Run an unfiltered scan of the affected scope before claiming no cross-category regression.
- Report the files changed and any checks you could not run.
````