1 files changed, 33 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/reducers/async-requests.js b/devtools/client/debugger/src/reducers/async-requests.js
new file mode 100644
index 0000000000..e3675f2cdb
--- /dev/null
+++ b/devtools/client/debugger/src/reducers/async-requests.js
@@ -0,0 +1,33 @@
+/* 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/>. */
+
+// @flow
+
+/**
+ * Async request reducer
+ * @module reducers/async-request
+ */
+
+const initialAsyncRequestState = [];
+
+function update(state: string[] = initialAsyncRequestState, action: any) {
+  const { seqId } = action;
+
+  if (action.type === "NAVIGATE") {
+    return initialAsyncRequestState;
+  } else if (seqId) {
+    let newState;
+    if (action.status === "start") {
+      newState = [...state, seqId];
+    } else if (action.status === "error" || action.status === "done") {
+      newState = (state.filter(id => id !== seqId): string[]);
+    }
+
+    return newState;
+  }
+
+  return state;
+}
+
+export default update;