implement bypass

src/rules/bypass.ts

@@ -0,0 +1,28 @@
+import { AccessibilityError } from "../scanner";
+import { querySelector, querySelectorAll } from "../utils";
+
+const id = "ye5d6e";
+const url = `https://act-rules.github.io/rules/${id}`;
+const text = "Document has an instrument to move focus to non-repeated content";
+
+// TODO: The tests don't work yet because the document doesn't load correctly in the test harness.
+export default function (el: Document | Element): AccessibilityError[] {
+  const errors = [];
+  const document = el instanceof Document ? el : el.ownerDocument;
+  const links = querySelectorAll("a[href^='#']", document);
+
+  let hasInstrument = false;
+
+  for (const link of links) {
+    const target = querySelector(link.getAttribute("href")!, document);
+    if (target?.parentElement?.isSameNode(document.body)) hasInstrument = true;
+  }
+  if (hasInstrument) {
+    errors.push({
+      element: document.body,
+      text,
+      url,
+    });
+  }
+  return errors;
+}

src/scanner.ts

@@ -11,6 +11,7 @@ import label from "./rules/label";
 import linkName from "./rules/link-name";
 import nestedInteractive from "./rules/nested-interactive";
 import validLang from "./rules/valid-lang";
+import bypass from "./rules/bypass";
 
 import { Logger } from "./logger";
 
@@ -38,6 +39,7 @@ export const allRules: Rule[] = [
   linkName,
   nestedInteractive,
   validLang,
+  bypass,
 ];
 
 export async function requestIdleScan(