feat(object-reducers): replace will now shallow merge with initial state

src/reducers/__tests__/objectReducer.test.js

@@ -17,8 +17,8 @@ describe('ObjectReducer', () => {
             it('reducer should return the state if the payload is undefined', () => {
                 expect(replace.reducer({ foo: 1 }, undefined)).toEqual({ foo: 1 });
             });
-            it('reducer should return the new state', () => {
-                expect(replace.reducer({ foo: 1 }, { foo: 2 })).toEqual({ foo: 2 });
+            it('reducer should return the new state combined with the initial state', () => {
+                expect(replace.reducer({ foo: 1, bar: 3 }, { foo: 2 }, { foo: 1, bar: 5 })).toEqual({ foo: 2, bar: 5 });
             });
         });
 

src/reducers/objectReducer.js

@@ -73,9 +73,12 @@ export const DEFAULT_SHAPE_BEHAVIORS: ShapeReducerBehaviorsConfig = {
         validate: false,
     },
     replace: {
-        reducer(state, payload) {
+        reducer(state, payload, initialState) {
             if (!payload) return state;
-            return payload;
+            return {
+              ...initialState,
+              ...payload,
+            };
         },
         validate: true,
     }