Require Swift 5.9

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 5.8
+// swift-tools-version: 5.9
 
 import PackageDescription
 

Sources/LanguageServerProtocol/Additions/DataChannel+MessageFraming.swift

@@ -3,23 +3,14 @@ import JSONRPC
 
 extension DataChannel {
 	/// Wrap http message framing on an existing data channel
-	public func withMessageFraming(
-	) -> DataChannel {
-
+	public func withMessageFraming() -> DataChannel {
 		let writeHandler: DataChannel.WriteHandler = { data in
 			let data = MessageFraming.frame(data)
 
 			try await self.writeHandler(data)
 		}
 
-#if compiler(>=5.9)
 		let (stream, continuation) = DataSequence.makeStream()
-#else
-		var escapedContinuation: DataSequence.Continuation?
-
-		let stream = DataSequence  { escapedContinuation = $0 }
-		let continuation = escapedContinuation!
-#endif
 
 		Task {
 			let byteStream = AsyncByteSequence(base: dataSequence)
@@ -33,6 +24,6 @@ extension DataChannel {
 		}
 
 		return DataChannel(writeHandler: writeHandler,
-							dataSequence: stream)
+						   dataSequence: stream)
 	}
 }