diff --git a/pkg/analysis_server/lib/src/analysis_server_abstract.dart b/pkg/analysis_server/lib/src/analysis_server_abstract.dart
index 4280b0d..7724107 100644
--- a/pkg/analysis_server/lib/src/analysis_server_abstract.dart
+++ b/pkg/analysis_server/lib/src/analysis_server_abstract.dart
@@ -431,7 +431,7 @@
     return driver
         .getResult(path, sendCachedToStream: sendCachedToStream)
         .then((value) => value is ResolvedUnitResult ? value : null)
-        .catchError((e, st) {
+        .catchError((Object e, StackTrace st) {
       instrumentationService.logException(e, st);
       return null;
     });
@@ -505,8 +505,8 @@
   /// Sends an error notification to the user.
   void sendServerErrorNotification(
     String message,
-    dynamic exception,
-    /*StackTrace*/ stackTrace, {
+    Object exception,
+    StackTrace? stackTrace, {
     bool fatal = false,
   });
 
diff --git a/pkg/analysis_server/lib/src/context_manager.dart b/pkg/analysis_server/lib/src/context_manager.dart
index 7f494be..b6df480 100644
--- a/pkg/analysis_server/lib/src/context_manager.dart
+++ b/pkg/analysis_server/lib/src/context_manager.dart
@@ -221,7 +221,7 @@
       this._performanceLog,
       this._scheduler,
       this._instrumentationService,
-      {required enableBazelWatcher})
+      {required bool enableBazelWatcher})
       : pathContext = resourceProvider.pathContext {
     if (enableBazelWatcher) {
       bazelWatcherService = BazelFileWatcherService(_instrumentationService);
diff --git a/pkg/analysis_server/lib/src/lsp/channel/lsp_byte_stream_channel.dart b/pkg/analysis_server/lib/src/lsp/channel/lsp_byte_stream_channel.dart
index ed1ea21..a86e794 100644
--- a/pkg/analysis_server/lib/src/lsp/channel/lsp_byte_stream_channel.dart
+++ b/pkg/analysis_server/lib/src/lsp/channel/lsp_byte_stream_channel.dart
@@ -80,7 +80,7 @@
       return;
     }
     _instrumentationService.logRequest(data);
-    final Map<String, Object?> json = jsonDecode(data);
+    final json = jsonDecode(data) as Map<String, Object?>;
     if (RequestMessage.canParse(json, nullLspJsonReporter)) {
       onMessage(RequestMessage.fromJson(json));
     } else if (NotificationMessage.canParse(json, nullLspJsonReporter)) {
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/commands/perform_refactor.dart b/pkg/analysis_server/lib/src/lsp/handlers/commands/perform_refactor.dart
index 20c4d27..4de8bfe 100644
--- a/pkg/analysis_server/lib/src/lsp/handlers/commands/perform_refactor.dart
+++ b/pkg/analysis_server/lib/src/lsp/handlers/commands/perform_refactor.dart
@@ -120,7 +120,7 @@
         final refactor = ExtractMethodRefactoring(
             server.searchEngine, result, offset, length);
 
-        var preferredName = options != null ? options['name'] : null;
+        var preferredName = options != null ? options['name'] as String : null;
         // checkInitialConditions will populate names with suggestions.
         if (preferredName == null) {
           await refactor.checkInitialConditions();
@@ -138,7 +138,7 @@
       case RefactoringKind.EXTRACT_LOCAL_VARIABLE:
         final refactor = ExtractLocalRefactoring(result, offset, length);
 
-        var preferredName = options != null ? options['name'] : null;
+        var preferredName = options != null ? options['name'] as String : null;
         // checkInitialConditions will populate names with suggestions.
         if (preferredName == null) {
           await refactor.checkInitialConditions();
@@ -162,7 +162,7 @@
         // to handle this better.
         // https://github.com/microsoft/language-server-protocol/issues/764
         refactor.name =
-            (options != null ? options['name'] : null) ?? 'NewWidget';
+            options != null ? options['name'] as String : 'NewWidget';
         return success(refactor);
 
       case RefactoringKind.INLINE_LOCAL_VARIABLE:
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handlers.dart b/pkg/analysis_server/lib/src/lsp/handlers/handlers.dart
index 6b87d05..6b2ed52 100644
--- a/pkg/analysis_server/lib/src/lsp/handlers/handlers.dart
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handlers.dart
@@ -134,7 +134,8 @@
   FutureOr<ErrorOr<R>> handleMessage(
       IncomingMessage message, CancellationToken token) {
     final reporter = LspJsonReporter('params');
-    if (!jsonHandler.validateParams(message.params, reporter)) {
+    final paramsJson = message.params as Map<String, Object?>?;
+    if (!jsonHandler.validateParams(paramsJson, reporter)) {
       return error(
         ErrorCodes.InvalidParams,
         'Invalid params for ${message.method}:\n'
@@ -144,9 +145,8 @@
       );
     }
 
-    final params = message.params != null
-        ? jsonHandler.convertParams(message.params)
-        : null as P;
+    final params =
+        paramsJson != null ? jsonHandler.convertParams(paramsJson) : null as P;
     return handle(params, token);
   }
 }
diff --git a/pkg/analysis_server/lib/src/lsp/lsp_analysis_server.dart b/pkg/analysis_server/lib/src/lsp/lsp_analysis_server.dart
index d33a96e..cf22460 100644
--- a/pkg/analysis_server/lib/src/lsp/lsp_analysis_server.dart
+++ b/pkg/analysis_server/lib/src/lsp/lsp_analysis_server.dart
@@ -374,17 +374,18 @@
 
   /// Logs an exception by sending it to the client (window/logMessage) and
   /// recording it in a buffer on the server for diagnostics.
-  void logException(String message, exception, stackTrace) {
+  void logException(String message, Object exception, StackTrace? stackTrace) {
     var fullMessage = message;
     if (exception is CaughtException) {
       stackTrace ??= exception.stackTrace;
       fullMessage = '$fullMessage: ${exception.exception}';
-    } else if (exception != null) {
+    } else {
       fullMessage = '$fullMessage: $exception';
     }
 
     final fullError =
         stackTrace == null ? fullMessage : '$fullMessage\n$stackTrace';
+    stackTrace ??= StackTrace.current;
 
     // Log the full message since showMessage above may be truncated or
     // formatted badly (eg. VS Code takes the newlines out).
@@ -394,7 +395,7 @@
     exceptions.add(ServerException(
       message,
       exception,
-      stackTrace is StackTrace ? stackTrace : StackTrace.current,
+      stackTrace,
       false,
     ));
 
@@ -550,9 +551,10 @@
   }
 
   @override
-  void sendServerErrorNotification(String message, exception, stackTrace,
+  void sendServerErrorNotification(
+      String message, Object exception, StackTrace? stackTrace,
       {bool fatal = false}) {
-    message = exception == null ? message : '$message: $exception';
+    message = '$message: $exception';
 
     // Show message (without stack) to the user.
     showErrorMessageToUser(message);
@@ -652,9 +654,9 @@
 
   /// There was an error related to the socket from which messages are being
   /// read.
-  void socketError(error, stack) {
+  void socketError(Object error, StackTrace? stackTrace) {
     // Don't send to instrumentation service; not an internal error.
-    sendServerErrorNotification('Socket error', error, stack);
+    sendServerErrorNotification('Socket error', error, stackTrace);
   }
 
   Future<void> updateWorkspaceFolders(
@@ -670,7 +672,7 @@
     _refreshAnalysisRoots();
   }
 
-  void _afterOverlayChanged(String path, dynamic changeForPlugins) {
+  void _afterOverlayChanged(String path, plugin.HasToJson changeForPlugins) {
     driverMap.values.forEach((driver) => driver.changeFile(path));
     pluginManager.setAnalysisUpdateContentParams(
       plugin.AnalysisUpdateContentParams({path: changeForPlugins}),
diff --git a/pkg/analysis_server/lib/src/lsp/mapping.dart b/pkg/analysis_server/lib/src/lsp/mapping.dart
index 36d72cc..ffabd19 100644
--- a/pkg/analysis_server/lib/src/lsp/mapping.dart
+++ b/pkg/analysis_server/lib/src/lsp/mapping.dart
@@ -1225,12 +1225,12 @@
 ErrorOr<int> toOffset(
   server.LineInfo lineInfo,
   lsp.Position pos, {
-  failureIsCritial = false,
+  bool failureIsCritical = false,
 }) {
   // line is zero-based so cannot equal lineCount
   if (pos.line >= lineInfo.lineCount) {
     return ErrorOr<int>.error(lsp.ResponseError(
-        code: failureIsCritial
+        code: failureIsCritical
             ? lsp.ServerErrorCodes.ClientServerInconsistentState
             : lsp.ServerErrorCodes.InvalidFileLineCol,
         message: 'Invalid line number',
diff --git a/pkg/analysis_server/lib/src/lsp/source_edits.dart b/pkg/analysis_server/lib/src/lsp/source_edits.dart
index 49b1b09..1e2b464 100644
--- a/pkg/analysis_server/lib/src/lsp/source_edits.dart
+++ b/pkg/analysis_server/lib/src/lsp/source_edits.dart
@@ -31,7 +31,7 @@
           Either2<TextDocumentContentChangeEvent1,
               TextDocumentContentChangeEvent2>>
       changes, {
-  failureIsCritical = false,
+  bool failureIsCritical = false,
 }) {
   var newContent = oldContent;
   final serverEdits = <server.SourceEdit>[];
@@ -45,9 +45,9 @@
       (change) {
         final lines = LineInfo.fromContent(newContent);
         final offsetStart = toOffset(lines, change.range.start,
-            failureIsCritial: failureIsCritical);
+            failureIsCritical: failureIsCritical);
         final offsetEnd = toOffset(lines, change.range.end,
-            failureIsCritial: failureIsCritical);
+            failureIsCritical: failureIsCritical);
         if (offsetStart.isError) {
           return ErrorOr.error(offsetStart.error);
         }
diff --git a/pkg/analysis_server/lib/src/search/search_domain.dart b/pkg/analysis_server/lib/src/search/search_domain.dart
index 3336e28..04542a8 100644
--- a/pkg/analysis_server/lib/src/search/search_domain.dart
+++ b/pkg/analysis_server/lib/src/search/search_domain.dart
@@ -5,6 +5,8 @@
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_constants.dart';
 import 'package:analysis_server/src/analysis_server.dart';
+import 'package:analysis_server/src/protocol/protocol_internal.dart'
+    show ResponseResult;
 import 'package:analysis_server/src/protocol_server.dart' as protocol;
 import 'package:analysis_server/src/search/element_references.dart';
 import 'package:analysis_server/src/search/type_hierarchy.dart';
@@ -262,8 +264,8 @@
   }
 
   /// Send a search response with the given [result] to the given [request].
-  void _sendSearchResult(protocol.Request request, result) {
-    protocol.Response response = result.toResponse(request.id);
+  void _sendSearchResult(protocol.Request request, ResponseResult result) {
+    var response = result.toResponse(request.id);
     server.sendResponse(response);
   }
 
diff --git a/tools/VERSION b/tools/VERSION
index 42bc094..e431a95 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -27,5 +27,5 @@
 MAJOR 2
 MINOR 16
 PATCH 0
-PRERELEASE 78
+PRERELEASE 79
 PRERELEASE_PATCH 0
\ No newline at end of file