diff --git a/handlebars/handlebars-tests.ts b/handlebars/handlebars-tests.ts
index 937f93191b..7ca58ff02a 100644
--- a/handlebars/handlebars-tests.ts
+++ b/handlebars/handlebars-tests.ts
@@ -78,3 +78,5 @@ Handlebars.registerHelper('list', (items: any, fn: (item: any) => string) => {
 Handlebars.registerHelper('fullName', (person: typeof context.author) => {
     return person.firstName + ' ' + person.lastName;
 });
+
+var escapedExpression = Handlebars.Utils.escapeExpression('<script>alert(\'xss\');</script>');
diff --git a/handlebars/handlebars.d.ts b/handlebars/handlebars.d.ts
index 0bdfff5bfd..0763815713 100644
--- a/handlebars/handlebars.d.ts
+++ b/handlebars/handlebars.d.ts
@@ -27,6 +27,7 @@ interface HandlebarsCommon {
 
     Exception(message: string): void;
     SafeString: typeof hbs.SafeString;
+    Utils: typeof hbs.Utils;
 
     logger: Logger;
     log(level: number, obj: any): void;
@@ -51,6 +52,10 @@ declare module hbs {
         constructor(str: string);
         static toString(): string;
     }
+
+    module Utils {
+        function escapeExpression(str: string): string;
+    }
 }
 
 interface Logger {