axe-core/lib/checks/aria/errormessage.json

Accessibility engine for automated Web UI testing

{
  "id": "aria-errormessage",
  "evaluate": "errormessage.js",
  "metadata": {
    "impact": "critical",
    "messages": {
      "pass": "Uses a supported aria-errormessage technique",
      "fail": "aria-errormessage value{{=it.data && it.data.length > 1 ? 's' : ''}} {{~it.data:value}} `{{=value}}{{~}}` must use a technique to announce the message (e.g., aria-live, aria-describedby, role=alert, etc.)"
    }
  }
}