`react-doctor/rn-no-panresponder`

Consider Gesture Handler for a measured PanResponder limitation after dependency, root, and responder-semantics checks

Status: Active
Category: React Native
Assessment: Evidence-required risk
Required evidence: source code
Default configuration: Enabled
Default severity: warn

Show technical metadata

Scope: React Native
Active when: framework=react-native and capabilities=react-native
Requirements: react-native
Tags: react-native, test-noise
Priority: 34 (P3)
Source: oxlint-plugin-react-doctor
Rule set: oxlint-plugin-react-doctor 0.9.3 (prompt schema 2)

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Validation prompt
Evidence boundary
Fix prompt
Repository-wide copy prompt

Validation prompt

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

Confirm a runtime PanResponder value import from "react-native", then require release-build evidence that its JS-thread behavior is a material problem. Inspect whether react-native-gesture-handler and Reanimated are already installed and configured, whether GestureHandlerRootView is correctly placed, and how the responder uses grant negotiation, capture, move thresholds, termination requests, cancellation, offsets, simultaneous gestures, accessibility, and platform-specific responder behavior. Type-only, local, and non-RN lookalikes are excluded.

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, repository policy, exceptions, and required rendered or runtime evidence before deciding the occurrence.

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 condition. It is not a pass or false positive.

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

Fix prompt

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

Only for a confirmed need and with authorized dependencies/configuration, translate the complete responder state machine to Gesture.Pan and GestureDetector. Preserve grant thresholds, starting offsets, update/end/finalize distinctions, cancellation and termination, simultaneous/failure relationships, JS callback scheduling, accessibility, and affected platform behavior. Reuse an existing GestureHandlerRootView rather than wrapping an arbitrary subtree, and use Reanimated only when installed and required by the measured visual path. Do not promise a frame rate; verify release behavior on target devices before removing PanResponder.

Repository-wide copy prompt

Use this repository-wide prompt only after validating each occurrence. For one occurrence, use the guidance above.

Show repository-wide prompt

Fix every confirmed react-doctor/rn-no-panresponder diagnostic in the current repository.

Required change:

Only for a confirmed need and with authorized dependencies/configuration, translate the complete responder state machine to Gesture.Pan and GestureDetector. Preserve grant thresholds, starting offsets, update/end/finalize distinctions, cancellation and termination, simultaneous/failure relationships, JS callback scheduling, accessibility, and affected platform behavior. Reuse an existing GestureHandlerRootView rather than wrapping an arbitrary subtree, and use Reanimated only when installed and required by the measured visual path. Do not promise a frame rate; verify release behavior on target devices before removing PanResponder.

Validation before editing:

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: framework=react-native and capabilities=react-native.

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.