Use Void over () on SourceKit files.

Author: abdullahselek

Sources/SourceKit/DocumentManager.swift

@@ -95,7 +95,7 @@ public final class DocumentManager {
   /// - returns: The contents of the file after all the edits are applied.
   /// - throws: Error.missingDocument if the document is not open.
   @discardableResult
-  public func edit(_ url: URL, newVersion: Int, edits: [TextDocumentContentChangeEvent], editCallback: ((_ before: DocumentSnapshot, TextDocumentContentChangeEvent) -> ())? = nil) throws -> DocumentSnapshot {
+  public func edit(_ url: URL, newVersion: Int, edits: [TextDocumentContentChangeEvent], editCallback: ((_ before: DocumentSnapshot, TextDocumentContentChangeEvent) -> Void)? = nil) throws -> DocumentSnapshot {
     return try queue.sync {
       guard let document = documents[url] else {
         throw Error.missingDocument(url)
@@ -159,7 +159,7 @@ extension DocumentManager {
 
   /// Convenience wrapper for `edit(_:newVersion:edits:editCallback:)` that logs on failure.
   @discardableResult
-  func edit(_ note: Notification<DidChangeTextDocument>, editCallback: ((_ before: DocumentSnapshot, TextDocumentContentChangeEvent) -> ())? = nil) -> DocumentSnapshot? {
+  func edit(_ note: Notification<DidChangeTextDocument>, editCallback: ((_ before: DocumentSnapshot, TextDocumentContentChangeEvent) -> Void)? = nil) -> DocumentSnapshot? {
     return orLog("failed to edit document", level: .error) {
       try edit(note.params.textDocument.url, newVersion: note.params.textDocument.version ?? -1, edits: note.params.contentChanges, editCallback: editCallback)
     }

Sources/SourceKit/SourceKitServer.swift

@@ -71,7 +71,7 @@ public final class SourceKitServer: LanguageServer {
   }
 
   func registerWorkspaceRequest<R>(
-    _ requestHandler: @escaping (SourceKitServer) -> (Request<R>, Workspace) -> ())
+    _ requestHandler: @escaping (SourceKitServer) -> (Request<R>, Workspace) -> Void)
   {
     _register { [unowned self] (req: Request<R>) in
       guard let workspace = self.workspace else {
@@ -83,7 +83,7 @@ public final class SourceKitServer: LanguageServer {
   }
 
   func registerWorkspaceNotfication<N>(
-    _ noteHandler: @escaping (SourceKitServer) -> (Notification<N>, Workspace) -> ())
+    _ noteHandler: @escaping (SourceKitServer) -> (Notification<N>, Workspace) -> Void)
   {
     _register { [unowned self] (note: Notification<N>) in
       guard let workspace = self.workspace else {

Sources/SourceKit/sourcekitd/SwiftSourceKitFramework.swift

@@ -160,7 +160,7 @@ extension SwiftSourceKitFramework {
   }
 
   /// Send the given request and synchronously receive a reply dictionary (or error).
-  func send(_ req: SKRequestDictionary, reply: @escaping (LSPResult<SKResponseDictionary>) -> ()) -> sourcekitd_request_handle_t? {
+  func send(_ req: SKRequestDictionary, reply: @escaping (LSPResult<SKResponseDictionary>) -> Void) -> sourcekitd_request_handle_t? {
     logAsync { _ in req.description }
 
     var handle: sourcekitd_request_handle_t? = nil