1 files changed, 46 insertions, 0 deletions
diff --git a/browser/extensions/webcompat/shims/webtrends.js b/browser/extensions/webcompat/shims/webtrends.js
new file mode 100644
index 0000000000..c7ef0069da
--- /dev/null
+++ b/browser/extensions/webcompat/shims/webtrends.js
@@ -0,0 +1,46 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1766414 - Shim WebTrends Core Tag and Advanced Link Tracking
+ *
+ * Sites using WebTrends Core Tag or Link Tracking can break if they are
+ * are blocked. This shim mitigates that breakage by loading an empty module.
+ */
+
+if (!window.dcsMultiTrack) {
+  window.dcsMultiTrack = o => {
+    o?.callback?.({});
+  };
+}
+
+if (!window.WebTrends) {
+  class dcs {
+    addSelector() {
+      return this;
+    }
+    addTransform() {
+      return this;
+    }
+    DCSext = {};
+    init(obj) {
+      return this;
+    }
+    track() {
+      return this;
+    }
+  }
+
+  window.Webtrends = window.WebTrends = {
+    dcs,
+    multiTrack: window.dcsMultiTrack,
+  };
+
+  window.requestAnimationFrame(() => {
+    window.webtrendsAsyncLoad?.(dcs);
+    window.webtrendsAsyncInit?.();
+  });
+}