build.gradle

buildscript {
    ext {
        versions = [
                'kotlin': '1.3.10',
                'compileSdkVersion': 28,
                'targetSdkVersion': 28,
                'minSdkVersion': 21
        ]
        support = [
                'compat': '28.0.0',
                'constraints': '1.1.3'
        ]

    }
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$versions.kotlin"
        classpath 'com.google.gms:google-services:4.2.0'

        // 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
}