1 files changed, 19 insertions, 0 deletions
diff --git a/devtools/client/shared/redux/middleware/thunk.js b/devtools/client/shared/redux/middleware/thunk.js
new file mode 100644
index 000000000..8f564a033
--- /dev/null
+++ b/devtools/client/shared/redux/middleware/thunk.js
@@ -0,0 +1,19 @@
+/* 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";
+
+/**
+ * A middleware that allows thunks (functions) to be dispatched.
+ * If it's a thunk, it is called with `dispatch` and `getState`,
+ * allowing the action to create multiple actions (most likely
+ * asynchronously).
+ */
+function thunk({ dispatch, getState }) {
+  return next => action => {
+    return (typeof action === "function")
+      ? action(dispatch, getState)
+      : next(action);
+  };
+}
+exports.thunk = thunk;