SwiftLint/Source/swiftlint/Commands/VersionCommand.swift

import Commandant
import SwiftLintFramework

struct VersionCommand: CommandProtocol {
    let verb = "version"
    let function = "Display the current version of SwiftLint"

    func run(_ options: NoOptions<CommandantError<()>>) -> Result<(), CommandantError<()>> {
        print(Version.current.value)
        return .success(())
    }
}