Make I18nManagerModule TurboModule-compatible

Summary:
This NativeModule will now be type-safe, and TurboModule-compatible.

Changelog: [Internal]

Reviewed By: fkgozali

Differential Revision: D26956332

fbshipit-source-id: 6651a003c70819934869dd6a8c664ef984d0efcb

Author: RSNara

Libraries/ReactNative/I18nManager.js

@@ -13,12 +13,19 @@ import NativeI18nManager from './NativeI18nManager';
 const i18nConstants: {|
   doLeftAndRightSwapInRTL: boolean,
   isRTL: boolean,
-|} = NativeI18nManager
-  ? NativeI18nManager.getConstants()
-  : {
-      isRTL: false,
-      doLeftAndRightSwapInRTL: true,
-    };
+|} = getI18nManagerConstants();
+
+function getI18nManagerConstants() {
+  if (NativeI18nManager) {
+    const {isRTL, doLeftAndRightSwapInRTL} = NativeI18nManager.getConstants();
+    return {isRTL, doLeftAndRightSwapInRTL};
+  }
+
+  return {
+    isRTL: false,
+    doLeftAndRightSwapInRTL: true,
+  };
+}
 
 module.exports = {
   getConstants: (): {|doLeftAndRightSwapInRTL: boolean, isRTL: boolean|} => {

Libraries/ReactNative/NativeI18nManager.js

@@ -15,6 +15,7 @@ export interface Spec extends TurboModule {
   +getConstants: () => {|
     isRTL: boolean,
     doLeftAndRightSwapInRTL: boolean,
+    localeIdentifier: ?string,
   |};
   allowRTL: (allowRTL: boolean) => void;
   forceRTL: (forceRTL: boolean) => void;

ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/BUCK

@@ -1,4 +1,4 @@
-load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_target", "rn_android_library")
+load("//tools/build_defs/oss:rn_defs.bzl", "react_native_dep", "react_native_root_target", "react_native_target", "rn_android_library")
 
 rn_android_library(
     name = "i18nmanager",
@@ -22,5 +22,6 @@ rn_android_library(
         react_native_target("java/com/facebook/react/bridge:bridge"),
         react_native_target("java/com/facebook/react/common:common"),
         react_native_target("java/com/facebook/react/module/annotations:annotations"),
+        react_native_root_target("Libraries:FBReactNativeSpec"),
     ],
 )

ReactAndroid/src/main/java/com/facebook/react/modules/i18nmanager/I18nManagerModule.java

@@ -8,23 +8,23 @@
 package com.facebook.react.modules.i18nmanager;
 
 import android.content.Context;
-import com.facebook.react.bridge.ContextBaseJavaModule;
+import com.facebook.fbreact.specs.NativeI18nManagerSpec;
 import com.facebook.react.bridge.NativeModule;
-import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.common.MapBuilder;
 import com.facebook.react.module.annotations.ReactModule;
 import java.util.Locale;
 import java.util.Map;
 
 /** {@link NativeModule} that allows JS to set allowRTL and get isRTL status. */
 @ReactModule(name = I18nManagerModule.NAME)
-public class I18nManagerModule extends ContextBaseJavaModule {
+public class I18nManagerModule extends NativeI18nManagerSpec {
 
   public static final String NAME = "I18nManager";
 
   private final I18nUtil sharedI18nUtilInstance = I18nUtil.getInstance();
 
-  public I18nManagerModule(Context context) {
+  public I18nManagerModule(ReactApplicationContext context) {
     super(context);
   }
 
@@ -34,8 +34,8 @@ public String getName() {
   }
 
   @Override
-  public Map<String, Object> getConstants() {
-    final Context context = getContext();
+  public Map<String, Object> getTypedExportedConstants() {
+    final Context context = getReactApplicationContext();
     final Locale locale = context.getResources().getConfiguration().locale;
 
     final Map<String, Object> constants = MapBuilder.newHashMap();
@@ -46,18 +46,18 @@ public Map<String, Object> getConstants() {
     return constants;
   }
 
-  @ReactMethod
+  @Override
   public void allowRTL(boolean value) {
-    sharedI18nUtilInstance.allowRTL(getContext(), value);
+    sharedI18nUtilInstance.allowRTL(getReactApplicationContext(), value);
   }
 
-  @ReactMethod
+  @Override
   public void forceRTL(boolean value) {
-    sharedI18nUtilInstance.forceRTL(getContext(), value);
+    sharedI18nUtilInstance.forceRTL(getReactApplicationContext(), value);
   }
 
-  @ReactMethod
+  @Override
   public void swapLeftAndRightInRTL(boolean value) {
-    sharedI18nUtilInstance.swapLeftAndRightInRTL(getContext(), value);
+    sharedI18nUtilInstance.swapLeftAndRightInRTL(getReactApplicationContext(), value);
   }
 }