add escapeShellArg func

index.js

@@ -1,2 +1,15 @@
 'use strict'
-module.exports = require('./build/Release/winutils.node')
+
+const bin = require('./build/Release/winutils.node')
+
+module.exports = {
+  escapeShellArg(arg) {
+    arg = arg.replace(/["%!]/g, ' ')
+    return '"' + arg + '"'
+  },
+
+  deelevate: bin.deelevate,
+  elevate: bin.elevate,
+  getSystem32Path: bin.getSystem32Path,
+  isUserAdmin: bin.isUserAdmin
+}