[FFM-10442] - Disable streaming if Reactive Native + Android is detec…

…ted (#115)

* [FFM-10442] - Disable streaming if Reactive Native + Android is detected

What
Make the JS SDK fall back to polling when it detects that it is running inside Android on React native

Why
XMLHttpRequest does not work correctly on React Native when Android is used.
For more context: facebook/react-native#28835
We will use this work around until a better fix is identified.

Testing
Manual

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@harnessio/ff-javascript-client-sdk",
-  "version": "1.23.0",
+  "version": "1.24.0",
   "author": "Harness",
   "license": "Apache-2.0",
   "main": "dist/sdk.cjs.js",

src/index.ts

@@ -22,7 +22,7 @@ import { Streamer } from './stream'
 import { getVariation } from './variation'
 import Poller from './poller'
 
-const SDK_VERSION = '1.23.0'
+const SDK_VERSION = '1.24.0'
 const SDK_INFO = `Javascript ${SDK_VERSION} Client`
 const METRICS_VALID_COUNT_INTERVAL = 500
 const fetch = globalThis.fetch
@@ -85,6 +85,19 @@ const initialize = (apiKey: string, target: Target, options?: Options): Result =
     configurations.pollingInterval = MIN_POLLING_INTERVAL
   }
 
+  if (configurations.streamEnabled) {
+    try {
+      const { Platform } = require("react-native");
+      if  (Platform.OS === 'android') {
+        console.info("SDKCODE:1007 Android React Native detected - streaming will be disabled and polling enabled")
+        configurations.pollingEnabled = true
+        configurations.streamEnabled = false
+      }
+    } catch (e) {
+      // ignore
+    }
+  }
+
   const logDebug = (message: string, ...args: any[]) => {
     if (configurations.debug) {
       // tslint:disable-next-line:no-console