react-doctor/client-passive-event-listeners

Add `{ passive: true }` as the third argument: `addEventListener('scroll', handler, { passive: true })`. Only do this if the handler does NOT call `event.preventDefault()`: passive listeners silently ignore `preventDefault()`, which breaks features like pull-to-refresh suppression, custom gestures, and nested-scroll containment.

Validation prompt

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

Confirm an addEventListener call whose first string-literal argument is one of scroll, wheel, touchstart, touchmove, or touchend AND whose third options argument is missing or an ObjectExpression without passive: true.

Suppress when: the handler intentionally calls event.preventDefault() to block pull-to-refresh, implement a custom gesture, or contain a nested scroll container.

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.

Pass { passive: true } as the third argument so the browser can scroll without waiting for the handler to return. If the handler must call preventDefault(), leave the option off (or set passive: false explicitly) since passive listeners silently ignore preventDefault. See https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#using_passive_listeners

Repository-wide copy prompt

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