Make status property optional, to avoid an interface breaking change

CHANGES.txt

@@ -1,4 +1,5 @@
 1.14.0 (September XX, 2024)
+ - Added `status` property to Split reducer's slice of state to track the readiness state of non-default clients (Related to https://github.com/splitio/redux-client/issues/113).
  - Added `lastUpdate` and `isTimedout` properties to the object returned by the `getStatus` helper and `selectTreatmentAndStatus` and `selectTreatmentWithConfigAndStatus` selectors, to expose the last event timestamp and the timedout status of the SDK clients (Related to https://github.com/splitio/redux-client/issues/113).
  - Updated @splitsoftware/splitio package to version 10.28.0 that includes minor updates:
       - Added `sync.requestOptions.getHeaderOverrides` configuration option to enhance SDK HTTP request Headers for Authorization Frameworks.

src/__tests__/reducer.test.ts

@@ -12,7 +12,6 @@ const initialState: ISplitState = {
   isDestroyed: false,
   lastUpdate: 0,
   treatments: {},
-  status: {}
 };
 
 const key = 'userkey';
@@ -128,7 +127,7 @@ describe('Split reducer', () => {
           [key]: treatments.test_split,
         },
       },
-      status: action.type === 'ADD_TREATMENTS' ? {} : {
+      status: action.type === 'ADD_TREATMENTS' ? undefined : {
         [key]: {
           ...initialStatus,
           isReady,
@@ -164,7 +163,7 @@ describe('Split reducer', () => {
           [key]: newTreatments.test_split,
         },
       },
-      status: action.type === 'ADD_TREATMENTS' ? {} : {
+      status: action.type === 'ADD_TREATMENTS' ? undefined : {
         [key]: {
           ...initialStatus,
           isReady,
@@ -199,7 +198,7 @@ describe('Split reducer', () => {
           [key]: newTreatments.test_split,
         },
       },
-      status: action.type === 'ADD_TREATMENTS' ? {} : {
+      status: action.type === 'ADD_TREATMENTS' ? undefined : {
         [key]: {
           ...initialStatus,
           isReady,
@@ -235,7 +234,7 @@ describe('Split reducer', () => {
           [key]: newTreatments.test_split,
         },
       },
-      status: action.type === 'ADD_TREATMENTS' ? {} : {
+      status: action.type === 'ADD_TREATMENTS' ? undefined : {
         [key]: {
           ...initialStatus,
           isReady,

src/reducer.ts

@@ -20,15 +20,14 @@ export const initialStatus = {
 const initialState: ISplitState = {
   ...initialStatus,
   treatments: {},
-  status: {},
 };
 
 function setStatus(state: ISplitState, patch: Partial<IStatus>, key?: string) {
   return key ? {
     ...state,
     status: {
       ...state.status,
-      [key]: state.status[key] ? {
+      [key]: state.status && state.status[key] ? {
         ...state.status[key],
         ...patch,
       } : {

src/types.ts

@@ -58,7 +58,7 @@ export interface ISplitState extends IStatus {
   /**
    * `status` is a nested object property that contains the readiness status of the non-default clients.
    */
-  status: {
+  status?: {
     [key: string]: IStatus;
   };
 }