[FSSDK-11965] prepare release 6.2.0 (#1098)

Author: raju-opti

CHANGELOG.md

@@ -5,6 +5,57 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [6.2.0] - October 22, 2025
+
+### New Features
+
+- **Added support for Contextual Multi-Armed Bandit (CMAB)**: Added support for CMAB experiments(Contextual Bandits rules) with new configuration options and cache control. To get decision from CMAB rules, `decideAsync` and related methods must be used. The sync `decide` method does not support CMABs and will just skip CMAB rules while making decision for a flag.
+
+  #### CMAB Configuration Options
+  
+  The following new options have been added to configure the cmab cache:
+  
+  ```js
+  import { createInstance } from '@optimizely/optimizely-sdk'
+  
+  const optimizely = createInstance({
+    // ... other config options
+    cmab: {
+      cacheSize: 1000,      // Optional: Set CMAB cache size (default: 1000)
+      cacheTtl: 30 * 60 * 1000,     // Optional: Set CMAB cache TTL in milliseconds (default: 30 * 60 * 1000)
+      cache: customCache    // Optional: Custom cache implementation, instance of CacheWithRemove interface
+    }
+  });
+  ```
+
+  #### CMAB-Related OptimizelyDecideOptions
+  
+  New decide options are available to control CMAB caching behavior:
+  
+  - `OptimizelyDecideOption.IGNORE_CMAB_CACHE`: Bypass CMAB cache for fresh decisions
+  - `OptimizelyDecideOption.RESET_CMAB_CACHE`: Clear and reset CMAB cache before making decisions  
+  - `OptimizelyDecideOption.INVALIDATE_USER_CMAB_CACHE`: Invalidate CMAB cache for the particular user and experiment
+  
+  ```js
+
+  // Example usage with CMAB decide options
+  const decision = await userContext.decideAsync('feature-flag-key', [
+    optimizelySdk.enums.OptimizelyDecideOption.IGNORE_CMAB_CACHE
+  ]);
+  ```
+
+### Bug Fixes
+- Flush events without closing client on page unload which causes event processing to stop working when page is loaded from bfcache ([#1087](https://github.com/optimizely/javascript-sdk/pull/1087))
+- Fixed typo in clientEngine option ([#1095](https://github.com/optimizely/javascript-sdk/pull/1095))
+
+## [5.4.0] - Oct 13, 2025 
+
+### New Features
+- Added `customHeaders` option to `datafileOptions` for passing custom HTTP headers in datafile requests ([#1092](https://github.com/optimizely/javascript-sdk/pull/1092))
+### Bug Fixes
+- Fix the EventTags type to allow event properties ([#1040](https://github.com/optimizely/javascript-sdk/pull/1040))
+- Fix typo in event.experimentIds field in project config ([#1088](https://github.com/optimizely/javascript-sdk/pull/1088))
+
 ## [6.1.0] - September 8, 2025
 
 ### New Features

lib/export_types.ts

@@ -64,8 +64,8 @@ export type {
 export type { ErrorHandler } from './error/error_handler';
 export type { OpaqueErrorNotifier } from './error/error_notifier_factory';
 
-export type { Cache } from './utils/cache/cache';
-export type { Store } from './utils/cache/store'
+export type { SyncCache, AsyncCache, Cache, SyncCacheWithRemove, AsyncCacheWithRemove, CacheWithRemove } from './utils/cache/cache';
+export type { SyncStore, AsyncStore, Store } from './utils/cache/store'
 
 export type {
   NotificationType,

lib/index.browser.tests.js

@@ -153,7 +153,7 @@ describe('javascript-sdk (Browser)', function() {
         });
 
         assert.instanceOf(optlyInstance, Optimizely);
-        assert.equal(optlyInstance.clientVersion, '6.1.0');
+        assert.equal(optlyInstance.clientVersion, '6.2.0');
       });
 
       it('should set the JavaScript client engine and version', function() {

lib/index.node.tests.js

@@ -88,7 +88,7 @@ describe('optimizelyFactory', function() {
         });
 
         assert.instanceOf(optlyInstance, Optimizely);
-        assert.equal(optlyInstance.clientVersion, '6.1.0');
+        assert.equal(optlyInstance.clientVersion, '6.2.0');
       });
       // TODO: user will create and inject an event processor
       // these tests will be refactored accordingly

lib/index.react_native.spec.ts

@@ -92,7 +92,7 @@ describe('javascript-sdk/react-native', () => {
         expect(optlyInstance).toBeInstanceOf(Optimizely);
         // eslint-disable-next-line @typescript-eslint/ban-ts-comment
         // @ts-ignore
-        expect(optlyInstance.clientVersion).toEqual('6.1.0');
+        expect(optlyInstance.clientVersion).toEqual('6.2.0');
       });
 
       it('should set the React Native JS client engine and javascript SDK version', () => {

lib/index.universal.ts

@@ -96,7 +96,8 @@ export type {
 export type { ErrorHandler } from './error/error_handler';
 export type { OpaqueErrorNotifier } from './error/error_notifier_factory';
 
-export type { Cache } from './utils/cache/cache';
+export type { SyncCache, AsyncCache, Cache, SyncCacheWithRemove, AsyncCacheWithRemove, CacheWithRemove } from './utils/cache/cache';
+export type { SyncStore, AsyncStore, Store } from './utils/cache/store'
 
 export type {
   NotificationType,

lib/utils/enums/index.ts

@@ -41,7 +41,7 @@ export const CONTROL_ATTRIBUTES = {
 export const JAVASCRIPT_CLIENT_ENGINE = 'javascript-sdk';
 export const NODE_CLIENT_ENGINE = 'node-sdk';
 export const REACT_NATIVE_JS_CLIENT_ENGINE = 'react-native-js-sdk';
-export const CLIENT_VERSION = '6.1.0';
+export const CLIENT_VERSION = '6.2.0';
 
 /*
  * Represents the source of a decision for feature management. When a feature

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@optimizely/optimizely-sdk",
-  "version": "6.1.0",
+  "version": "6.2.0",
   "description": "JavaScript SDK for Optimizely Feature Experimentation, Optimizely Full Stack (legacy), and Optimizely Rollouts",
   "main": "./dist/index.node.min.js",
   "browser": "./dist/index.browser.es.min.js",