Upgrade JS+Android dependecies (#634)

Changes:

- Upgrade js libraries in package.json.
- Use Hermes by default in the example project.
- Extract android dependencies versions to example module (Root project) build Gradle.
- Add Kotlin support.
- Bump minimum android version to 21.
- Upgrade Gradle plugin to 6.1.1 (for `NewRelic` users, should be updated to >= 5.25.2)

example/.gitignore

@@ -54,3 +54,6 @@ buck-out/
 
 # Bundle artifact
 *.jsbundle
+
+# Cocoa pods
+ios/Pods/

example/android/build.gradle

@@ -1,22 +1,25 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext {
-        buildToolsVersion = "28.0.3"
-        minSdkVersion = 16
-        compileSdkVersion = 28
-        targetSdkVersion = 26
-        supportLibVersion = "28.0.3"
-    }
+    ext{
+        androidGradlePluginVersion = '4.0.0'
+        androidSdkVersion = 29
+        androidMinSdkVersion = 21
+        kotlinVersion = "1.3.61"
+        kotlinStdlib = "kotlin-stdlib-jdk8"
+        detoxKotlinVersion = kotlinVersion
+        googleServices = "4.3.3"
+  }
     repositories {
         google()
         mavenLocal()
         mavenCentral()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.3'
-        classpath 'com.google.gms:google-services:4.0.1'
+        classpath "com.android.tools.build:gradle:$androidGradlePluginVersion"
+        classpath "com.google.gms:google-services:$googleServices"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
     }
 }
 
@@ -26,12 +29,10 @@ allprojects {
         mavenCentral()
         google()
         jcenter()
-
         maven {
             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
             url "$rootDir/../../node_modules/react-native/android"
         }
-        maven { url "$rootDir/../../node_modules/jsc-android/dist" }
     }
 }
 

example/android/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip

example/android/myapplication/build.gradle

@@ -1,27 +1,32 @@
 apply plugin: "com.android.application"
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 
 project.ext.react = [
-        root     : "../../../",
-        entryFile: "index.js",
+        root           : "../../../",
+        entryFile      : "index.js",
         bundleAssetName: "index.bundle",
-        bundleInAlpha: true,
-        bundleInBeta: true
+        enableHermes   : true,
+        bundleInAlpha  : true,
+        bundleInBeta   : true,
+        hermesFlagsDebug:['-Xes6-proxy'],
+        hermesFlagsRelease:['-Xes6-proxy']
 ]
 
 apply from: "../../../node_modules/react-native/react.gradle"
 
 android {
-    compileSdkVersion 28
-    buildToolsVersion "28.0.3"
+    compileSdkVersion androidSdkVersion
+
     defaultConfig {
         applicationId "com.wix.reactnativenotifications.app"
-        minSdkVersion 16
-        targetSdkVersion 28
+        minSdkVersion androidMinSdkVersion
+        targetSdkVersion androidSdkVersion
         versionCode 1
         versionName "1.0"
 
         ndk {
-            abiFilters "armeabi-v7a", "x86"
+            abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
         }
     }
     buildTypes {
@@ -31,32 +36,40 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility 1.8
-        targetCompatibility 1.8
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
     }
+    def taskName = getGradle().getStartParameter().getTaskRequests().toString()
+
     packagingOptions {
-        pickFirst '**/libjsc.so'
         pickFirst '**/libc++_shared.so'
+        if (taskName.contains("InternalDebug")) {
+            // Release libs take precedence and must be removed
+            // to allow debugging
+            exclude '**/libhermes-executor-release.so'
+        } else {
+            // Reduce size by deleting the debugger/inspector
+            exclude '**/libhermes-inspector.so'
+            exclude '**/libhermes-executor-debug.so'
+        }
     }
-}
-
 
-configurations.all {
-    resolutionStrategy {
-        force 'org.webkit:android-jsc:r236355'
-    }
 }
 
+
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-
-    implementation 'com.google.firebase:firebase-core:16.0.0'
-    implementation 'androidx.appcompat:appcompat:1.0.2'
+    def hermesPath = "../../../node_modules/hermes-engine/android/";
+    exec {
+        executable 'grep'
+        args "version", '../../../node_modules/hermes-engine/package.json'
+    }
+    debugImplementation files(hermesPath + "hermes-debug.aar")
+    releaseImplementation files(hermesPath + "hermes-release.aar")
+    implementation "org.jetbrains.kotlin:$kotlinStdlib:$kotlinVersion"
+    implementation "androidx.appcompat:appcompat:1.0.0"
     implementation 'com.facebook.react:react-native:+'
-    implementation 'org.webkit:android-jsc-intl:+'
     implementation project(':react-native-notifications')
-
-    testImplementation'junit:junit:4.12'
 }
 
 apply plugin: 'com.google.gms.google-services'