Adds "proper" support for node.js

Merge branch 'nodejs-support-squashed' into dev

Conflicts:
	src/Tween.js

.gitignore

@@ -0,0 +1,2 @@
+nodejs/index.js
+nodejs/README.md

nodejs/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "tween",
+  "description": "Super simple, fast and easy to use tweening engine which incorporates optimised Robert Penner's equations.",
+  "version": "0.10.0",
+  "homepage": "https://github.com/sole/tween.js",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/sole/tween.js.git"
+  },
+  "bugs": {
+    "url": "https://github.com/sole/tween.js/issues"
+  },
+  "licenses": [
+    {
+      "type": "MIT",
+      "url": "https://github.com/sole/tween.js/blob/master/LICENSE"
+    }
+  ],
+  "keywords": [
+    "tween"
+  ]
+}

src/Tween.js

@@ -22,7 +22,6 @@ if ( Date.now === undefined ) {
 
 }
 
-
 var TWEEN = TWEEN || ( function () {
 
 	var _tweens = [];
@@ -67,7 +66,7 @@ var TWEEN = TWEEN || ( function () {
 
 			var i = 0, numTweens = _tweens.length;
 
-			time = time !== undefined ? time : ( window.performance !== undefined && window.performance.now !== undefined ? window.performance.now() : Date.now() );
+			time = time !== undefined ? time : ( typeof window !== 'undefined' && window.performance !== undefined && window.performance.now !== undefined ? window.performance.now() : Date.now() );
 
 			while ( i < numTweens ) {
 
@@ -137,7 +136,7 @@ TWEEN.Tween = function ( object ) {
 
 		_onStartCallbackFired = false;
 
-		_startTime = time !== undefined ? time : (window.performance !== undefined && window.performance.now !== undefined ? window.performance.now() : Date.now() );
+		_startTime = time !== undefined ? time : ( typeof window !== 'undefined' && window.performance !== undefined && window.performance.now !== undefined ? window.performance.now() : Date.now() );
 		_startTime += _delayTime;
 
 		for ( var property in _valuesEnd ) {
@@ -334,6 +333,7 @@ TWEEN.Tween = function ( object ) {
 
 };
 
+
 TWEEN.Easing = {
 
 	Linear: {
@@ -699,4 +699,3 @@ TWEEN.Interpolation = {
 	}
 
 };
-

utils/builder.py

@@ -1,11 +1,21 @@
 import os
+import shutil
 
 source = '../src/Tween.js'
 output = '../build/tween.min.js'
+nodeOutput = '../nodejs/index.js'
+readme = '../README.md'
+nodeReadme = '../nodejs/README.md'
 
 os.system( 'java -jar compiler/compiler.jar --language_in=ECMASCRIPT5_STRICT --js ' + source + ' --js_output_file ' + output )
 
 # header
 
 with open(output,'r') as f: text = f.read()
 with open(output,'w') as f: f.write('// tween.js - http://github.com/sole/tween.js\n' + text)
+
+shutil.copyfile(source, nodeOutput)
+shutil.copyfile(readme, nodeReadme)
+
+with open(nodeOutput,'r') as f: text = f.read()
+with open(nodeOutput,'w') as f: f.write('// tween.js - http://github.com/sole/tween.js\n' + text + '\nmodule.exports=TWEEN;')