axe-core/lib/checks/navigation/region.json

Accessibility engine for automated Web UI testing

{
  "id": "region",
  "evaluate": "region.js",
  "after": "region-after.js",
  "metadata": {
    "impact": "moderate",
    "messages": {
      "pass": "Content contained by ARIA landmark",
      "fail": "Content not contained by an ARIA landmark"
    }
  }
}