diff --git a/component.json b/component.json
new file mode 100644
index 0000000..40223ce
--- /dev/null
+++ b/component.json
@@ -0,0 +1,22 @@
+{
+  "name": "JavaScript-MD5",
+  "version": "1.1.1",
+  "description": "JavaScript MD5 implementation.",
+  "keywords": [
+    "javascript",
+    "md5"
+  ],
+  "scripts": [
+    "js/md5.js"
+  ],
+  "main": "js/md5.js",
+  "license": "MIT",
+  "development": {
+    "grunt": "~0.4.1",
+    "grunt-contrib-uglify": "~0.2.7",
+    "grunt-contrib-jshint": "~0.7.1",
+    "grunt-bump-build-git": "~1.0.0",
+    "grunt-simple-mocha": "~0.4.0",
+    "expect.js": "0.2.0"
+  }
+}
diff --git a/js/md5.js b/js/md5.js
index f92ba37..2ed6f4c 100644
--- a/js/md5.js
+++ b/js/md5.js
@@ -264,11 +264,22 @@
         return raw_hmac_md5(key, string);
     }
 
-    if (typeof define === 'function' && define.amd) {
-        define(function () {
-            return md5;
-        });
+    // check js environment
+    if (typeof(exports) !== 'undefined') {
+        // nodejs env
+        if (typeof module !== 'undefined' && module.exports) {
+            exports = module.exports = md5;
+        }
+        exports.md5 = md5;
     } else {
-        $.md5 = md5;
+        // requirejs env (optional)
+        if (typeof(define) === 'function' && define.amd) {
+            define(function () {
+                    return md5;
+                });
+        } else {
+            // browser env
+            $.md5 = md5;
+        }
     }
 }(this));