A debouncer helper in Kotlin with coroutines

Debouncer.kt

import kotlinx.coroutines.*

class Debouncer<T>(private val millis: Long, val block: (T) -> Unit) {
  private var job: Job? = null

  fun run(param: T) {
    job?.cancel()

    job = GlobalScope.launch(Dispatchers.Main) {
      delay(millis)
      block(param)
    }
  }
}

// usage

val textDebouncer = Debouncer<String?>(300, ::myCallback)
// or Debouncer<String>(300) { val -> dostuff(val) }

fun myCallback(text: String?) {
  // do your magic with "some more text"
}

textDebouncer.run("some")
textDebouncer.run("some more")
textDebouncer.run("some more text")