build.gradle

buildscript {

    ext {
        kotlinVersion = '1.2.50'
    }
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0-alpha06'
        classpath 'android.arch.navigation:navigation-safe-args-gradle-plugin:1.0.0-alpha01'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

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

ext {
    supportLibVersion = "27.1.1"
    runnerVersion = "0.5"
    rulesVersion = "0.5"
    espressoVersion = "2.2.2"
    navigationVersion = "1.0.0-alpha01"
    constraintLayoutVersion = "1.1.0"
}