reducer & store setup

src/reducers/cells.js

@@ -0,0 +1,27 @@
+const Cells = (state = {
+  cells: null,
+  loading: null,
+  error: null,
+}, action) => {
+  switch (action.type) {
+  case "REQUEST_CELLS":
+    return Object.assign({}, state, {
+      loading: true,
+      error: null
+    });
+  case "RECEIVE_CELLS":
+    return Object.assign({}, state, {
+      error: null,
+      cells: action.data,
+    });
+  case "CELLS_FETCH_ERROR":
+    return Object.assign({}, state, {
+      cells: null,
+      error: action.data
+    });
+  default:
+    return state;
+  }
+};
+
+export default Cells;

src/reducers/index.js

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+import { combineReducers, createStore } from 'redux'
+import cells from './cells'
+
+const Reducer = combineReducers({
+  cells,
+})
+
+let store = createStore(Reducer);
+
+export default store;