Adding a close method (#27)

android/src/main/java/com/launchdarkly/reactnative/LaunchdarklyReactNativeClientModule.java

@@ -174,6 +174,7 @@ public String getName() {
     // Constants used in promise rejection
     private static final String ERROR_INIT = "E_INITIALIZE";
     private static final String ERROR_IDENTIFY = "E_IDENTIFY";
+    private static final String ERROR_CLOSE = "E_CLOSE";
     private static final String ERROR_UNKNOWN = "E_UNKNOWN";
 
     // Prefix for events sent over the React Native event bridge
@@ -786,6 +787,19 @@ public void flush() {
         ldClient.flush();
     }
 
+    /**
+     * Triggers a background flush and then closes all connections to LaunchDarkly.
+     */
+    @ReactMethod
+    public void close(Promise promise) {
+        try {
+            ldClient.close();
+            promise.resolve(true);
+        } catch (Exception e) {
+            promise.reject(ERROR_CLOSE, e);
+        }
+    }
+
     /**
      * Calls LaunchDarkly's identify call that selects the user flags are pulled for, and tracking
      * events refer to.

index.js

@@ -107,6 +107,10 @@ export default class LDClient {
     LaunchdarklyReactNativeClient.flush();
   }
 
+  close() {
+    LaunchdarklyReactNativeClient.close();
+  }
+
   identify(userConfig) {
     return LaunchdarklyReactNativeClient.identify(userConfig);
   }

ios/LaunchdarklyReactNativeClient.swift

@@ -238,6 +238,11 @@ class LaunchdarklyReactNativeClient: RCTEventEmitter {
         LDClient.shared.reportEvents()
     }
 
+    @objc func close(_ resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) -> Void {
+        LDClient.shared.stop()
+        resolve(true)
+    }
+
     @objc func identify(_ options: NSDictionary, resolve: @escaping RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) -> Void {
         let user = userBuild(userConfig: options)
         if let usr = user {

ios/LaunchdarklyReactNativeClientBridge.m

@@ -53,6 +53,8 @@ @interface RCT_EXTERN_MODULE(LaunchdarklyReactNativeClient, RCTEventEmitter)
 
 RCT_EXTERN_METHOD(flush)
 
+RCT_EXTERN_METHOD(close:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
+
 RCT_EXTERN_METHOD(identify:(NSDictionary *)options resolve:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
 
 RCT_EXTERN_METHOD(allFlags:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)