1 files changed, 73 insertions, 0 deletions
diff --git a/browser/extensions/webcompat/shims/apstag.js b/browser/extensions/webcompat/shims/apstag.js
new file mode 100644
index 0000000000..55be05916b
--- /dev/null
+++ b/browser/extensions/webcompat/shims/apstag.js
@@ -0,0 +1,73 @@
+/* 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 1713698 - Shim Amazon Transparent Ad Marketplace's apstag.js
+ *
+ * Some sites such as politico.com rely on Amazon TAM tracker to serve ads,
+ * breaking functionality like galleries if it is blocked. This shim helps
+ * mitigate major breakage in that case.
+ */
+
+if (!window.apstag?._getSlotIdToNameMapping) {
+  const _Q = window.apstag?._Q || [];
+
+  const newBid = config => {
+    return {
+      amznbid: "",
+      amzniid: "",
+      amznp: "",
+      amznsz: "0x0",
+      size: "0x0",
+      slotID: config.slotID,
+    };
+  };
+
+  window.apstag = {
+    _Q,
+    _getSlotIdToNameMapping() {},
+    bids() {},
+    debug() {},
+    deleteId() {},
+    fetchBids(cfg, cb) {
+      if (!Array.isArray(cfg?.slots)) {
+        return;
+      }
+      setTimeout(() => {
+        cb(cfg.slots.map(s => newBid(s)));
+      }, 1);
+    },
+    init() {},
+    punt() {},
+    renderImp() {},
+    renewId() {},
+    setDisplayBids() {},
+    targetingKeys: () => [],
+    thirdPartyData: {},
+    updateId() {},
+  };
+
+  window.apstagLOADED = true;
+
+  _Q.push = function (prefix, args) {
+    try {
+      switch (prefix) {
+        case "f":
+          window.apstag.fetchBids(...args);
+          break;
+        case "i":
+          window.apstag.init(...args);
+          break;
+      }
+    } catch (e) {
+      console.trace(e);
+    }
+  };
+
+  for (const cmd of _Q) {
+    _Q.push(cmd);
+  }
+}