react-doctor/media-has-caption

Add a `<track kind="captions">` child to every `<audio>` / `<video>`.

Validation prompt

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

Fires on any <audio> or <video> element (plus names mapped to them via the jsx-a11y audio/video/components settings) that lacks a direct child <track> whose kind is a static string literal equal to "captions" (case-insensitive); a kind="subtitles" track, a bare <track>, or a media element with no children all still fire. Statically truthy muted: bare muted, muted={true}, or muted="true": suppresses it, but muted={false} does not.

Suppress when: a <track kind={captionsKind} /> whose kind comes from a variable or any non-literal expression is invisible to the static check and reported even when it resolves to "captions" at runtime.

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.

Add a captions track as a direct child of the media element: <video><track kind="captions" src="captions.vtt" srcLang="en" label="English" /></video>. The kind must be a literal string "captions" (subtitles do not satisfy the rule); if the value must be dynamic, the static check can't verify it, so keep a literal kind="captions" or guard with a justified eslint-disable on that line. For media that is genuinely silent, mark it muted to opt out. See https://oxc.rs/docs/guide/usage/linter/rules/jsx_a11y/media-has-caption

Repository-wide copy prompt

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