import 'dart:async';

typedef ComputeCallback = Future<R> Function<Q, R>(
    FutureOr<R> Function(Q message) callback, Q message,
    {String? debugLabel});

// keep types in sync with [computeCallbackFromRunInBackground]
typedef ComputeRunner = Future<T> Function<T, U>(
    FutureOr<T> Function(U arg) function, U arg);

ComputeCallback computeCallbackFromRunInBackground(ComputeRunner runner) {
  return <U, T>(FutureOr<T> Function(U arg) callback, U arg,
          {String? debugLabel}) =>
      runner.call(callback, arg);
}