buildscript { repositories { jcenter() } dependencies { classpath 'com.android.tools.build:gradle:1.3.1' } } apply plugin: 'com.android.library' def safeExtGet(prop, fallback) { rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback } android { compileSdkVersion safeExtGet('compileSdkVersion', 26) buildToolsVersion safeExtGet('buildToolsVersion', '26.0.3') defaultConfig { minSdkVersion safeExtGet('minSdkVersion', 16) targetSdkVersion safeExtGet('targetSdkVersion', 26) versionCode 1 versionName "1.0" } lintOptions { abortOnError false } } repositories { mavenCentral() } dependencies { implementation 'com.facebook.react:react-native:+' }