Added error handling · Draco-lang/Compiler@270c3e8

'LspMessage' does not implement interface member 'IJsonRpcMessage.IsRequest'

'LspMessage' does not implement interface member 'IJsonRpcMessage.IsNotification'

'LspMessage' does not implement interface member 'IJsonRpcMessage.IsResponse'

'LspMessage' does not implement interface member 'IJsonRpcMessage.IsCancellation'

'LspMessage' does not implement interface member 'IJsonRpcMessage.IsError'

'LspMessage' does not implement interface member 'IJsonRpcMessage.ErrorMessage'

'LspMessage' does not implement interface member 'IJsonRpcMessage.ErrorDetails'

'LspMessage' does not implement interface member 'IJsonRpcMessage.IsImplementationDefined'

'LspMessage' does not implement interface member 'IJsonRpcMessage.Id'

'LspMessage' does not implement interface member 'IJsonRpcMessage.Method'

Provide feedback