NonThrowingAwaitable

public struct NonThrowingAwaitable
{
    private readonly Task _task;
    private readonly bool _continueOnCapturedContext;

    public NonThrowingAwaitable(Task task, bool continueOnCapturedContext)
    {
        _task = task;
        _continueOnCapturedContext = continueOnCapturedContext;
    }

    public NonThrowingAwaiter GetAwaiter() => new NonThrowingAwaiter(_task, _continueOnCapturedContext);

    public struct NonThrowingAwaiter : INotifyCompletion
    {
        private ConfiguredTaskAwaitable.ConfiguredTaskAwaiter _innerAwaiter;

        public NonThrowingAwaiter(Task task, bool continueOnCapturedContext)
            : this(task.ConfigureAwait(continueOnCapturedContext).GetAwaiter()) { }
        private NonThrowingAwaiter(ConfiguredTaskAwaitable.ConfiguredTaskAwaiter innerAwaiter)
        {
            _innerAwaiter = innerAwaiter;
        }

        public void GetResult() { }
        public bool IsCompleted => _innerAwaiter.IsCompleted;
        public void OnCompleted(Action continuation) => _innerAwaiter.OnCompleted(continuation);
    }
}

public static class TaskExtensions
{
    public static NonThrowingAwaitable NonThrowing(this Task task, bool continueOnCapturedContext = true)
    {
        return new NonThrowingAwaitable(task, continueOnCapturedContext);
    }
}