How can I check in runtime if I am running in a development environment?

# ktor

[Alex Styl]

How can I check in runtime if I am running in a development environment?

[Aleksei Tirman [JB]]

embeddedServer(CIO, port = 3333) {
    val app = this
    routing {
        get("/") {
            call.respondText { app.environment.developmentMode.toString() }
        }
    }
}.start(wait = true)