react-doctor/no-prevent-default

Use `<form action={serverAction}>` (works without JS) or `<button>` instead of `<a>` with preventDefault

Validation prompt

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

Rule fires on <form onSubmit={handler}> or <a onClick={handler}> whose inline handler contains any .preventDefault() call. For anchors, confirm the element is being misused as an action or router interception. For forms, preventDefault is normal in client-only flows, local validation, uploads, offline handling, and SPA submission; syntax alone does not prove a Server Action is appropriate.

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.

For anchors, use a button for an action or the router's Link for navigation instead of an href='#' interception. For forms, keep onSubmit plus preventDefault when the product intentionally owns a client-side submission lifecycle. Use <form action={serverAction}> only for a server mutation in a React/framework environment that supports Actions and after preserving validation, pending, error, and progressive-enhancement behavior. See https://react.dev/reference/react-dom/components/form

Repository-wide copy prompt

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