Revert using default export for module definition

Author: eriwen

stackframe.d.ts

@@ -3,6 +3,10 @@
 // Definitions by: Eric Wendelin <https://www.eriwen.com>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
+export as namespace StackFrame;  // global for non-module UMD users
+
+export = StackFrame;
+
 declare namespace StackFrame {
     export interface StackFrameOptions {
         isConstructor?: boolean;
@@ -68,5 +72,3 @@ declare class StackFrame {
 
     toString(): string;
 }
-
-export default StackFrame;

stackframe.js

@@ -6,7 +6,7 @@
     if (typeof define === 'function' && define.amd) {
         define('stackframe', [], factory);
     } else if (typeof exports === 'object') {
-        module.exports.default = factory();
+        module.exports = factory();
     } else {
         root.StackFrame = factory();
     }