fixes #49491 (#49493)

Author: bentongxyz

Diff for: src/services/utilities.ts

@@ -2647,7 +2647,7 @@ namespace ts {
             Debug.assert(fileName === renameFilename);
             for (const change of textChanges) {
                 const { span, newText } = change;
-                const index = indexInTextChange(newText, name);
+                const index = indexInTextChange(newText, escapeString(name));
                 if (index !== -1) {
                     lastPos = span.start + delta + index;
 

Diff for: tests/cases/fourslash/refactorConvertToGetAccessAndSetAccess41.ts

@@ -0,0 +1,24 @@
+/// <reference path='fourslash.ts' />
+
+// @strict: true
+
+////class A {
+////    /*a*/"\\foo": "";/*b*/
+////}
+
+goTo.select("a", "b");
+edit.applyRefactor({
+    refactorName: "Generate 'get' and 'set' accessors",
+    actionName: "Generate 'get' and 'set' accessors",
+    actionDescription: "Generate 'get' and 'set' accessors",
+    newContent:
+`class A {
+    private /*RENAME*/"_\\\\foo": "";
+    public get "\\\\foo"(): "" {
+        return this["_\\\\foo"];
+    }
+    public set "\\\\foo"(value: "") {
+        this["_\\\\foo"] = value;
+    }
+}`
+});

Diff for: tests/cases/fourslash/refactorConvertToGetAccessAndSetAccess42.ts

@@ -0,0 +1,24 @@
+/// <reference path='fourslash.ts' />
+
+// @strict: true
+
+////class A {
+////    /*a*/"\tfoo": "";/*b*/
+////}
+
+goTo.select("a", "b");
+edit.applyRefactor({
+    refactorName: "Generate 'get' and 'set' accessors",
+    actionName: "Generate 'get' and 'set' accessors",
+    actionDescription: "Generate 'get' and 'set' accessors",
+    newContent:
+`class A {
+    private /*RENAME*/"_\\tfoo": "";
+    public get "\\tfoo"(): "" {
+        return this["_\\tfoo"];
+    }
+    public set "\\tfoo"(value: "") {
+        this["_\\tfoo"] = value;
+    }
+}`
+});