use browserify cli to do this...

lib/bundle.js

@@ -23,8 +23,8 @@
  *
  **/
 var mdeps  = require("module-deps"),
-insertGlobals = require('insert-module-globals'),
 path       = require("path"),
+spawn      = require('child_process').spawn,
 fs         = require("fs"),
 through    = require("through"),
 async      = require("async"),
@@ -40,30 +40,15 @@ _log     = require("./log");
  * @param {function} complete - next function to call (async)
  **/
 function bundle (input, nc, complete) {
-  var igv = '__filename,__dirname';
-  insertGlobalVars = igv.split(',').reduce(function (vars, x) { // borrowed from browserify
-    vars[x] = insertGlobals.vars[x];
-    return vars;
-  }, {});
-
-  var b = browserify(input, {
-    builtins: false,
-    commondir:false,
-    detectGlobals: false,
-    insertGlobals: '__filename,__dirname',
-    insertGlobalVars: insertGlobalVars,
-    browserField: false
-  });
   var bundlePath = path.join(nc, "lib", "nexe.js");
   var ws = fs.createWriteStream(bundlePath);
+  var proc = spawn('node', ['node_modules/browserify/bin/cmd.js', '--node', input ]);
 
-  /*if(fs.existsSync(bundlePath)) {
-    fs.unlinkSync(bundlePath);
-  }*/
+  proc.stdout.pipe(ws);
 
-  var bfs = b.bundle(); // open the bundle stream.
-
-  bfs.pipe(ws); // pipe it to the write stream we created earlier
+  proc.on('close', function(code) {
+    console.log("browserify finished")
+  })
 
   ws.on('error', function(err) {
     console.log(err);
@@ -75,7 +60,7 @@ function bundle (input, nc, complete) {
     fs.writeFileSync(bundlePath, source, 'utf8');
 
     complete();
-  })
+  });
 }
 
 module.exports = bundle;