diff --git a/package.json b/package.json
index 0553490..806a633 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,7 @@
   },
   "scripts": {
     "prepublish": "npm run tsd && node ts",
+    "test":  "node ts --only-test",
     "tsd": "./node_modules/.bin/tsd reinstall --overwrite"
   }
 }
\ No newline at end of file
diff --git a/ts.js b/ts.js
index b1af1cf..8ccfaa5 100644
--- a/ts.js
+++ b/ts.js
@@ -2,6 +2,7 @@
 var childProcess = require('child_process');
 var fs = require('fs');
 var path = require('path');
+var isTest = process.argv[2] === '--only-test';
 
 read(function(err, fileNames) {
   clean(fileNames, function() {
@@ -27,6 +28,7 @@ read(function(err, fileNames) {
  * @param {function()} done
  */
 function clean(filePaths, done) {
+  if (isTest) return done();
   var i = -1;
   (function next() {
     i += 1;
@@ -46,6 +48,7 @@ function clean(filePaths, done) {
  * @param {function(Error)} done
  */
 function compile(filePaths, done) {
+    if (isTest) return done(null);
   var execPath = path.join(__dirname, 'node_modules/.bin/tsc');
   var options = '--declaration --module CommonJS --noImplicitAny --outDir dist';
   childProcess.exec([execPath, options].concat(filePaths).join(' '), function(err, stdout) {