build.gradle

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

    ext {
        kotlin_version = '1.3.70'
    }
    ext.general = [
            "android": [
                    "sdk": [
                            "compile": 29 as Integer,
                            "min"    : 21 as Integer,
                            "target" : 29 as Integer
                    ]
            ],
            "version": [
                    "code": 1,
                    "name": "0.0.1"
            ]
    ]

    ext.versions = [
            "androidx": [
                    "appcompat"       : "1.2.0",
                    "constraintlayout": "2.0.4",
                    "core"            : "1.3.2",
                    "lifecycle"       : "2.2.0",
                    "navigation"      : "2.3.1",
                    "test"            : [
                            "espresso"  : "3.3.0",
                            "extjunit" : "1.1.2"
                    ]
            ],
            "google"  : [
                    "android": [
                            "material": "1.2.1"
                    ]
            ],
            "junit4"  : "4.13",
            "kotlin"  : [
                    "base"      : "1.4.10",
                    "coroutines": "1.4.1"
            ],
            "plugins" : [
                    "android"     : "4.1.0",
                    "dependencies": "0.35.0"
            ]
    ]

    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath "com.android.tools.build:gradle:${versions.plugins.android}"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${versions.kotlin.base}"
        classpath "com.github.ben-manes:gradle-versions-plugin:${versions.plugins.dependencies}"
    }
}

apply plugin: "com.github.ben-manes.versions"

allprojects {

    version = general.version.name

    repositories {
        google()
        jcenter()
    }
}

def isNonStable = { String version ->
    def nonStableKeywords = ['ALPHA', 'BETA', 'M1', 'M2', 'M3', 'RC'].any { version.toUpperCase().contains(it) }
    return nonStableKeywords
}

dependencyUpdates {
    resolutionStrategy {
        componentSelection {
            all {
                if (isNonStable(it.candidate.version) && !isNonStable(it.currentVersion)) {
                    reject('Release candidate')
                }
            }
        }
    }
}

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