make coffeescript a dev dependency

.gitignore

@@ -1,2 +1,3 @@
+lib/shutdownHandler.js
 node_modules
 coverage

.npmignore

@@ -0,0 +1,2 @@
+node_modules
+coverage

lib/index.js

@@ -1,4 +1,12 @@
-// Only require coffeescript if it is not already registered
-if (!require.extensions[".coffee"]) require("coffee-script/register");
+try {
+  module.exports = require("./shutdownHandler");
+} catch(e) {
+  if(e.message.startsWith("Cannot find module './shutdownHandler'")) {
+    // Only require coffeescript if it is not already registered
+    if (!require.extensions[".coffee"]) require("coffee-script/register");
 
-module.exports = require("./shutdownHandler.coffee");
+    module.exports = require("./shutdownHandler.coffee");
+  } else {
+    throw e;
+  }
+}

package.json

@@ -19,14 +19,15 @@
   "homepage": "https://github.com/UberEther/node-shutdown-events",
   "scripts": {
     "test": "mocha",
-    "test-cov": "istanbul cover --config test/istanbul.yml node_modules/mocha/bin/_mocha"
+    "test-cov": "istanbul cover --config test/istanbul.yml node_modules/mocha/bin/_mocha",
+    "prepublish": "coffee -o lib -c lib/*.coffee"
   },
   "dependencies": {
-    "coffee-script": "^1.9.2",
     "bluebird": "^2.9.13",
     "debug": "^2.2.0"
   },
   "devDependencies": {
+    "coffee-script": "^1.9.2",
     "mocha": "^2.3.0",
     "chai": "^3.2.0",
     "rewire": "^2.3.4",