build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext {
        buildToolsVersion = "28.0.0"
        minSdkVersion = 16
        compileSdkVersion = 28
        targetSdkVersion = 26
        supportLibVersion = "28.0.0"
    }
    repositories {
        google()
        mavenLocal()
        mavenCentral()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.1'
        classpath 'com.google.gms:google-services:4.0.0'
    }
}

allprojects {
    repositories {
        mavenLocal()
        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" }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}