buildscript { repositories { google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:3.1.4' } } apply plugin: 'com.android.library' def safeExtGet(prop, fallback) { rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback } android { compileSdkVersion rootProject.ext.compileSdkVersion defaultConfig { minSdkVersion rootProject.ext.minSdkVersion targetSdkVersion rootProject.ext.targetSdkVersion versionCode 1 versionName "1.0" } lintOptions { abortOnError false } } repositories { mavenCentral() } dependencies { implementation "com.facebook.react:react-native:${safeExtGet("reactNative", "+")}" // from node_modules }