diff --git a/bundler/bundle.js b/bundler/bundle.js
index 4b0e00c6..4ee3a9c3 100644
--- a/bundler/bundle.js
+++ b/bundler/bundle.js
@@ -17,25 +17,28 @@ module.exports = function(input, output, options) {
 				
 				//resolve npm dependencies
 				if (filename[0] !== ".") {
-					var meta = fs.statSync("./node_modules/" + filename + "/package.json").isFile() ? JSON.parse(fs.readFileSync("./node_modules/" + filename + "/package.json")) : {}
+					var meta
+					try {meta = JSON.parse(fs.readFileSync("./node_modules/" + filename + "/package.json"))} catch (e) {meta = {}}
 					var dependencyEntry = "./node_modules/" + filename + "/" + (meta.main || filename + ".js")
 					try {fs.statSync(dependencyEntry).isFile()} catch (e) {dependencyEntry = "./node_modules/" + filename + "/index.js"}
-					return resolve(path.dirname(dependencyEntry), exportCode(dependencyEntry, def + variable + eq))
+					return process(dependencyEntry)
 				}
 				
 				//resolve local dependencies
-				var normalized = path.resolve(dir, filename)
-				var pathname = path.dirname(normalized)
-				if (modules[normalized] === undefined) {
-					modules[normalized] = variable
-					var exported = exportCode(dir + "/" + filename + ".js", def + variable + eq)
-					return resolve(pathname, exported)
-				}
-				else {
-					if (modules[normalized] !== variable) {
-						replacements.push({variable: variable, replacement: modules[normalized]})
+				return process(dir + "/" + filename + ".js")
+				
+				function process(dependency) {
+					var normalized = path.resolve(dir, filename)
+					if (modules[normalized] === undefined) {
+						modules[normalized] = variable
+						return resolve(path.dirname(dependency), exportCode(dependency, def + variable + eq))
+					}
+					else {
+						if (modules[normalized] !== variable) {
+							replacements.push({variable: variable, replacement: modules[normalized]})
+						}
+						return ""
 					}
-					return ""
 				}
 			})
 			if (replacements.length > 0) {
@@ -75,7 +78,7 @@ module.exports = function(input, output, options) {
 		function bundle(input, output) {
 			console.log("bundling...")
 			var code = setVersion(resolve(path.dirname(input), fs.readFileSync(input, "utf8")))
-			/*if (new Function(code)) */fs.writeFileSync(output, code, "utf8")
+			if (new Function(code)) fs.writeFileSync(output, code, "utf8")
 			console.log("done")
 		}