1 files changed, 31 insertions, 0 deletions
diff --git a/packages/instant/src/redux/reducer.ts b/packages/instant/src/redux/reducer.ts
new file mode 100644
index 000000000..5026895ae
--- /dev/null
+++ b/packages/instant/src/redux/reducer.ts
@@ -0,0 +1,31 @@
+import { BigNumber } from '@0xproject/utils';
+import * as _ from 'lodash';
+
+import { Action, ActionTypes } from '../types';
+
+export interface State {
+    ethUsdPrice?: string;
+    selectedAssetAmount?: BigNumber;
+}
+
+export const INITIAL_STATE: State = {
+    ethUsdPrice: undefined,
+    selectedAssetAmount: undefined,
+};
+
+export const reducer = (state: State = INITIAL_STATE, action: Action): State => {
+    switch (action.type) {
+        case ActionTypes.UPDATE_ETH_USD_PRICE:
+            return {
+                ...state,
+                ethUsdPrice: action.data,
+            };
+        case ActionTypes.UPDATE_SELECTED_ASSET_AMOUNT:
+            return {
+                ...state,
+                selectedAssetAmount: action.data,
+            };
+        default:
+            return state;
+    }
+};