Initial commit

node_modules/@fluentui/react-utilities/lib/virtualParent/elementContains.js

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+import { getParent } from './getParent';
+/**
+ * Similar functionality to `element.contains` DOM API for use without of order DOM elements that
+ * checks the virtual parent hierarchy. If a virtual parents exists, it is chosen over the actual parent
+ *
+ * @internal
+ * @returns true if the child can find the parent in its virtual hierarchy
+ */ export function elementContains(parent, child) {
+    if (!parent || !child) {
+        return false;
+    }
+    if (parent === child) {
+        return true;
+    } else {
+        // Tracks references of nodes that have been visited to prevent infinite loops
+        const set = new WeakSet();
+        while(child){
+            const nextParent = getParent(child, {
+                skipVirtual: set.has(child)
+            });
+            set.add(child);
+            if (nextParent === parent) {
+                return true;
+            }
+            child = nextParent;
+        }
+    }
+    return false;
+}