1 files changed, 23 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 0000000000..adcca77ede
--- /dev/null
+++ b/devtools/client/shared/redux/middleware/thunk.js
@@ -0,0 +1,23 @@
+/* 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 an argument that will be an object
+ * containing `dispatch` and `getState` properties, plus any additional properties
+ * defined in the `options` parameters.
+ * This allows the action to create multiple actions (most likely asynchronously).
+ */
+function thunk(options = {}) {
+  return function ({ dispatch, getState }) {
+    return next => action => {
+      return typeof action === "function"
+        ? action({ dispatch, getState, ...options })
+        : next(action);
+    };
+  };
+}
+
+exports.thunk = thunk;