1 files changed, 35 insertions, 0 deletions
diff --git a/devtools/client/aboutdebugging/src/middleware/error-logging.js b/devtools/client/aboutdebugging/src/middleware/error-logging.js
new file mode 100644
index 0000000000..fd04f34b76
--- /dev/null
+++ b/devtools/client/aboutdebugging/src/middleware/error-logging.js
@@ -0,0 +1,35 @@
+/* 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";
+
+/**
+ * Error logging middleware that will forward all actions that contain an error property
+ * to the console.
+ */
+function errorLoggingMiddleware() {
+  return next => action => {
+    if (action.error) {
+      const { error } = action;
+      if (error.message) {
+        console.error(`[ACTION FAILED] ${action.type}: ${error.message}`);
+      } else if (typeof error === "string") {
+        // All failure actions should dispatch an error object instead of a message.
+        // We allow some flexibility to still provide some error logging.
+        console.error(`[ACTION FAILED] ${action.type}: ${error}`);
+        console.error(
+          `[ACTION FAILED] ${action.type} should dispatch the error object!`
+        );
+      }
+
+      if (error.stack) {
+        console.error(error.stack);
+      }
+    }
+
+    return next(action);
+  };
+}
+
+module.exports = errorLoggingMiddleware;