diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index f0968971ab..539cbb10f5 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -144,6 +144,7 @@ All definitions files include a header with the author and editors, so at some p
 * [iCheck](http://damirfoy.com/iCheck/) (by [Dániel Tar](https://github.com/qcz))
 * [Impress.js](https://github.com/bartaz/impress.js) (by [Boris Yankov](https://github.com/borisyankov))
 * [Imagemagick](http://github.com/rsms/node-imagemagick) (by [Carlos Ballesteros Velasco](https://github.com/soywiz))
+* [insight](https://github.com/yeoman/insight) (by [vvakame](https://github.com/vvakame))
 * [interact.js](http://github.com/taye/interact.js) (by [Douglas Eichelberger](https://github.com/dduugg))
 * [Ion.RangeSlider](https://github.com/IonDen/ion.rangeSlider) (by [Douglas Eichelberger](https://github.com/dduugg))
 * [Ionic-Cordova](https://github.com/driftyco/) (by [Hendrik Maus](https://github.com/hendrikmaus))
diff --git a/insight/insight-tests.ts b/insight/insight-tests.ts
new file mode 100644
index 0000000000..9d081fff18
--- /dev/null
+++ b/insight/insight-tests.ts
@@ -0,0 +1,21 @@
+/// <reference path="./insight.d.ts" />
+
+declare var require:any;
+
+import Insight = require('insight');
+var pkg:any = require('./package.json');
+
+var insight = new Insight({
+    // Google Analytics tracking code
+    trackingCode: 'UA-XXXXXXXX-X',
+    packageName: pkg.name,
+    packageVersion: pkg.version
+});
+
+// ask for permission the first time
+if (insight.optOut === undefined) {
+    return insight.askPermission();
+}
+
+insight.track('foo', 'bar');
+// recorded in Analytics as `/foo/bar`
diff --git a/insight/insight.d.ts b/insight/insight.d.ts
new file mode 100644
index 0000000000..8b78dba989
--- /dev/null
+++ b/insight/insight.d.ts
@@ -0,0 +1,49 @@
+// Type definitions for insight 0.4.3
+// Project: https://github.com/yeoman/insight
+// Definitions by: vvakame <http://github.com/vvakame>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module insight {
+    interface IOptions {
+        trackingCode:string;
+        trackingProvider?:string;
+        packageName:string;
+        packageVersion?:string;
+        config?:IConfigstore;
+    }
+
+    interface IConfigstore {
+        path:string;
+        all:any;
+        get(key:string):any;
+        set(key:string, val:any):void;
+        del(key:string):void;
+    }
+}
+
+declare module "insight" {
+    import IOptions = insight.IOptions;
+    import IConfigstore = insight.IConfigstore;
+
+    class Insight {
+        trackingCode:string;
+        trackingProvider:string;
+        packageName:string;
+        packageVersion:string;
+        os:string;
+        nodeVersion:string;
+        appVersion:string;
+        config:IConfigstore;
+
+        optOut:boolean;
+        clientId:string;
+
+        constructor(options:IOptions);
+
+        track(...args:string[]):void;
+
+        askPermission(msg?:string, cb?:Function):void;
+    }
+
+    export = Insight;
+}