diff --git a/json-patch/json-patch-tests.ts b/json-patch/json-patch-tests.ts
new file mode 100644
index 0000000000..c2736c403f
--- /dev/null
+++ b/json-patch/json-patch-tests.ts
@@ -0,0 +1,35 @@
+/// <reference path="./json-patch.d.ts" />
+
+import jp = require("json-patch");
+
+// Add property, result: {foo: 'bar'}
+jsonpatch.apply({}, [{ op: 'add', path: '/foo', value: 'bar' }]);
+// Add array element, result: {foo: [1, 2, 3]}
+jsonpatch.apply({ foo: [1, 3] }, [{ op: 'add', path: '/foo/1', value: 2 }]);
+// Complex, result: {foo: [{bar: 'baz'}]}
+jsonpatch.apply({ foo: [{}] }, [{ op: 'add', path: '/foo/0/bar', value: 'baz' }]);
+
+// Remove property, result: {}
+jsonpatch.apply({ foo: 'bar' }, [{ op: 'remove', path: '/foo' }]);
+// Remove array element, result: {foo: [1, 3]}
+jsonpatch.apply({ foo: [1, 2, 3] }, [{ op: 'remove', path: '/foo/1' }]);
+// Complex, result: {foo: [{}]}
+jsonpatch.apply({ foo: [{ bar: 'baz' }] }, [{ op: 'remove', path: '/foo/0/bar' }]);
+
+// Replace property, result: {foo: 1}
+jsonpatch.apply({ foo: 'bar' }, [{ op: 'replace', path: '/foo', value: 1 }]);
+// Repalce array element, result: {foo: [1, 4, 3]}
+jsonpatch.apply({ foo: [1, 2, 3] }, [{ op: 'replace', path: '/foo/1', value: 4 }]);
+// Complex, result: {foo: [{bar: 1}]}
+jsonpatch.apply({ foo: [{ bar: 'baz' }] }, [{ op: 'replace', path: '/foo/0/bar', value: 1 }]);
+
+// Move property, result {bar: [1, 2, 3]}
+jsonpatch.apply({ foo: [1, 2, 3] }, [{ op: 'move', from: '/foo', path: '/bar' }]);
+// Copy property, result {foo: [1, 2, 3], bar: 2}
+jsonpatch.apply({ foo: [1, 2, 3] }, [{ op: 'copy', from: '/foo/1', path: '/bar' }]);
+// Test equality of property to value, result: true
+jsonpatch.apply({ foo: 'bar' }, [{ op: 'test', path: '/foo', value: 'bar' }]);
+
+jsonpatch.compile([{ op: 'test', path: '/foo', value: 'bar' }])({ foo: 'bar' });
+
+jp.apply({}, [{ op: 'add', path: '/foo', value: 'bar' }]);
diff --git a/json-patch/json-patch.d.ts b/json-patch/json-patch.d.ts
new file mode 100644
index 0000000000..308fe35c69
--- /dev/null
+++ b/json-patch/json-patch.d.ts
@@ -0,0 +1,41 @@
+// Type definitions for json-patch
+// Project: https://github.com/bruth/jsonpatch-js
+// Definitions by: vvakame <https://github.com/vvakame/>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module jsonpatch {
+    type OpPatch = AddPath | RemovePath | ReplacePath | MovePath | CopyPath | TestPath;
+    interface Patch {
+        op: string;
+    }
+    interface AddPath extends Patch {
+        path: string;
+        value: any;
+    }
+    interface RemovePath extends Patch {
+        path: string;
+    }
+    interface ReplacePath extends Patch {
+        path: string;
+        value: any;
+    }
+    interface MovePath extends Patch {
+        from: string;
+        path: string;
+    }
+    interface CopyPath extends Patch {
+        from: string;
+        path: string;
+    }
+    interface TestPath extends Patch {
+        path: string;
+        value: any;
+    }
+
+    function apply(document: any, patches: OpPatch[]): any;
+    function compile(patches: OpPatch[]): (document: any) => any;
+}
+
+declare module "json-patch" {
+    export = jsonpatch;
+}