Add support for TS RenameTextSpan

Fixes #60204

extensions/typescript-language-features/src/features/rename.ts

@@ -11,6 +11,13 @@ import { ITypeScriptServiceClient, ServerResponse } from '../typescriptService';
 import API from '../utils/api';
 import * as typeConverters from '../utils/typeConverters';
 
+// TODO: Remove when we pick up TS 3.2
+declare module '../protocol' {
+	interface RenameTextSpan extends TextSpan {
+		readonly prefixText?: string;
+		readonly suffixText?: string;
+	}
+}
 
 const localize = nls.loadMessageBundle();
 
@@ -102,8 +109,9 @@ class TypeScriptRenameProvider implements vscode.RenameProvider {
 		for (const spanGroup of locations) {
 			const resource = this.client.toResource(spanGroup.file);
 			if (resource) {
-				for (const textSpan of spanGroup.locs) {
-					edit.replace(resource, typeConverters.Range.fromTextSpan(textSpan), newName);
+				for (const textSpan of spanGroup.locs as Proto.RenameTextSpan[]) {
+					edit.replace(resource, typeConverters.Range.fromTextSpan(textSpan),
+						(textSpan.prefixText || '') + newName + (textSpan.suffixText || ''));
 				}
 			}
 		}