Handy extension class to use TaskCompletionSource on demand

TaskAsyncExtensions.cs

public static class TaskAsyncExtensions
{
    public static Task<T> MakeAsync<T>(Action<Action<T>> syncAction)
    {
        var taskCompletion = new TaskCompletionSource<T>(TaskCreationOptions.RunContinuationsAsynchronously);
        
        syncAction.Invoke(taskCompletion.SetResult);
        
        return taskCompletion.Task;
    }
}