react-doctor/no-disabled-zoom
Remove `user-scalable=no` and `maximum-scale` from the viewport meta tag. If your layout breaks at 200% zoom, fix the layout: don't punish users with disabilities
- Status
- Active
- Category
- Accessibility
- Assessment
- Source-confirmable defect
- Required evidence
- source code, rendered UI, accessibility audit
- Default configuration
- Disabled until configured
- Default severity
- error
Show technical metadata
- Scope
- All supported frameworks
- Active when
- always
- Tags
- design, test-noise
- Priority
- 89 (P0)
- Source
- oxlint-plugin-react-doctor
- Rule set
- oxlint-plugin-react-doctor 0.9.3 (prompt schema 2)
Validation prompt
Confirm the reported code matches this rule before editing it.
Confirm the flagged JSX is a meta element with name='viewport' whose content string literal contains user-scalable=no or maximum-scale set below 2. This is a hard WCAG 1.4.4 violation; legitimate exceptions are essentially limited to dedicated kiosk apps, so treat the diagnostic as a true positive.
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.
The design tag controls activation and discovery. It does not determine the rule’s proof class.
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
Use this occurrence-level guidance to correct the confirmed defect.
Remove user-scalable=no entirely, and either drop maximum-scale or set it to 5. The standard tag is content='width=device-width, initial-scale=1'. If the layout breaks at 200% zoom, fix the responsive CSS rather than blocking zoom. See https://www.w3.org/WAI/WCAG21/Understanding/resize-text
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/no-disabled-zoom diagnostic in the current repository.
Required change:
- Remove user-scalable=no entirely, and either drop maximum-scale or set it to 5. The standard tag is content='width=device-width, initial-scale=1'. If the layout breaks at 200% zoom, fix the responsive CSS rather than blocking zoom. See https://www.w3.org/WAI/WCAG21/Understanding/resize-text.
Validation before editing:
Confirm the flagged JSX is a meta element with name='viewport' whose content string literal contains user-scalable=no or maximum-scale set below 2. This is a hard WCAG 1.4.4 violation; legitimate exceptions are essentially limited to dedicated kiosk apps, so treat the diagnostic as a true positive.
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.
- Preserve accessible names, focus order, keyboard behavior, and touch access not targeted by this rule.
- Adapt identifiers and framework details instead of copying blindly.
- Do not disable the rule or suppress matching code.
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.