fixes

src/compiler/emitter.ts

@@ -1953,6 +1953,7 @@ namespace ts {
         }
 
         function emitTabStop(hint: EmitHint, node: Node, snippet: TabStop) {
+            // A tab stop should only be attached to an empty node, i.e. a node that doesn't emit any text.
             Debug.assert(node.kind === SyntaxKind.EmptyStatement,
                 `A tab stop cannot be attached to a node of kind ${Debug.formatSyntaxKind(node.kind)}.`);
             Debug.assert(hint !== EmitHint.EmbeddedStatement,

src/services/textChanges.ts

@@ -1052,15 +1052,6 @@ namespace ts.textChanges {
                     ? "" : options.suffix);
         }
 
-        export function getFormatCodeSettingsForWriting({ options }: formatting.FormatContext, sourceFile: SourceFile): FormatCodeSettings {
-            const shouldAutoDetectSemicolonPreference = !options.semicolons || options.semicolons === SemicolonPreference.Ignore;
-            const shouldRemoveSemicolons = options.semicolons === SemicolonPreference.Remove || shouldAutoDetectSemicolonPreference && !probablyUsesSemicolons(sourceFile);
-            return {
-                ...options,
-                semicolons: shouldRemoveSemicolons ? SemicolonPreference.Remove : SemicolonPreference.Ignore,
-            };
-        }
-
         /** Note: this may mutate `nodeIn`. */
         function getFormattedTextOfNode(nodeIn: Node, sourceFile: SourceFile, pos: number, { indentation, prefix, delta }: InsertNodeOptions, newLineCharacter: string, formatContext: formatting.FormatContext, validate: ValidateNonFormattedText | undefined): string {
             const { node, text } = getNonformattedText(nodeIn, sourceFile, newLineCharacter);

src/services/utilities.ts

@@ -3290,5 +3290,17 @@ namespace ts {
             : getLocaleSpecificMessage(diag);
     }
 
+    /**
+     * Get format code settings for a code writing context (e.g. when formatting text changes or completions code).
+     */
+    export function getFormatCodeSettingsForWriting({ options }: formatting.FormatContext, sourceFile: SourceFile): FormatCodeSettings {
+        const shouldAutoDetectSemicolonPreference = !options.semicolons || options.semicolons === SemicolonPreference.Ignore;
+        const shouldRemoveSemicolons = options.semicolons === SemicolonPreference.Remove || shouldAutoDetectSemicolonPreference && !probablyUsesSemicolons(sourceFile);
+        return {
+            ...options,
+            semicolons: shouldRemoveSemicolons ? SemicolonPreference.Remove : SemicolonPreference.Ignore,
+        };
+    }
+
     // #endregion
 }