DotNext by Roman Sakno

<PackageReference Include="DotNext" Version="2.9.6" />

.NET API 329,216 bytes

WriterStream<TArg>

abstract class WriterStream<TArg> : Stream

public abstract IAsyncResult BeginWrite(byte[] buffer, int offset, int count, AsyncCallback callback, object state)

public abstract void Write(ReadOnlySpan<byte> buffer)

public abstract ValueTask WriteAsync(ReadOnlyMemory<byte> buffer, CancellationToken token)