<PackageReference Include="System.Text.Encodings.Web" Version="8.0.0-preview.6.23329.7" />

OptimizedInboxTextEncoder

public OperationStatus Encode(ReadOnlySpan<char> source, Span<char> destination, out int charsConsumed, out int charsWritten, bool isFinalBlock)

public OperationStatus EncodeUtf8(ReadOnlySpan<byte> source, Span<byte> destination, out int bytesConsumed, out int bytesWritten, bool isFinalBlock)

public int FindFirstCharacterToEncode(Char* text, int textLength)

public bool IsScalarValueAllowed(Rune value)

public bool TryEncodeUnicodeScalar(int unicodeScalar, Char* buffer, int bufferLength, out int numberOfCharactersWritten)