react-hooks-js/hooks

Validates the rules of hooks

Validation prompt

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

Fires when a hook (useState, useEffect, useMemo, etc.: anything whose name matches use + UppercaseLetter) is called conditionally, inside a loop, after an early return, inside a callback/event handler, in an async function, in a class method, or at module top level.

Suppress when: the use() hook IS allowed in conditionals and loops: it is the only hook with that exemption (and still cannot live in try/catch).

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.

Pull the hook to the top level of the component or custom hook, then move the condition inside the hook body: useEffect(() => { if (cond) doThing(); }, [cond]) rather than if (cond) useEffect(...). For conditional initial state, pass the conditional into useState's argument: useState(cond ? a : b). React relies on a fixed call order across renders to associate state with each hook slot. See https://react.dev/reference/eslint-plugin-react-hooks

Repository-wide copy prompt

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