import com.github.benmanes.gradle.versions.updates.DependencyUpdatesTask

plugins {
    id("com.github.ben-manes.versions")
}

tasks.withType<DependencyUpdatesTask> {
    rejectVersionIf {
        isNonStable(candidate.version) && !isNonStable(currentVersion)
    }
}

fun isNonStable(version: String): Boolean {
    val stableKeyword = listOf("RELEASE", "FINAL", "GA").any { version.toUpperCase().contains(it) }
    val regex = "^[\\d,.v-]+(-r)?$".toRegex()
    val isStable = stableKeyword || regex.matches(version)
    return isStable.not()
}