1 files changed, 38 insertions, 0 deletions
diff --git a/toolkit/components/extensions/parent/ext-activityLog.js b/toolkit/components/extensions/parent/ext-activityLog.js
new file mode 100644
index 0000000000..2b0c68614e
--- /dev/null
+++ b/toolkit/components/extensions/parent/ext-activityLog.js
@@ -0,0 +1,38 @@
+/* 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";
+
+ChromeUtils.defineESModuleGetters(this, {
+  ExtensionActivityLog: "resource://gre/modules/ExtensionActivityLog.sys.mjs",
+  ExtensionCommon: "resource://gre/modules/ExtensionCommon.sys.mjs",
+});
+
+this.activityLog = class extends ExtensionAPI {
+  getAPI(context) {
+    return {
+      activityLog: {
+        onExtensionActivity: new ExtensionCommon.EventManager({
+          context,
+          name: "activityLog.onExtensionActivity",
+          register: (fire, id) => {
+            // A logger cannot log itself.
+            if (id === context.extension.id) {
+              throw new ExtensionUtils.ExtensionError(
+                "Extension cannot monitor itself."
+              );
+            }
+            function handler(details) {
+              fire.async(details);
+            }
+
+            ExtensionActivityLog.addListener(id, handler);
+            return () => {
+              ExtensionActivityLog.removeListener(id, handler);
+            };
+          },
+        }).api(),
+      },
+    };
+  }
+};