diff --git a/query-string/query-string-tests.ts b/query-string/query-string-tests.ts
new file mode 100644
index 0000000000..597d270f2e
--- /dev/null
+++ b/query-string/query-string-tests.ts
@@ -0,0 +1,13 @@
+/// <reference path="./query-string.d.ts" />
+
+import qs = require('query-string');
+
+qs.stringify({ foo: 'bar' });
+qs.stringify({ foo: 'bar', bar: 'baz' });
+
+qs.parse('?foo=bar');
+qs.parse('#foo=bar');
+qs.parse('&foo=bar&foo=baz');
+
+qs.extract('http://foo.bar/?abc=def&hij=klm');
+qs.extract('http://foo.bar/?foo=bar');
diff --git a/query-string/query-string.d.ts b/query-string/query-string.d.ts
new file mode 100644
index 0000000000..e4d76d0030
--- /dev/null
+++ b/query-string/query-string.d.ts
@@ -0,0 +1,27 @@
+// Type definitions for query-string v3.0.0
+// Project: https://github.com/sindresorhus/query-string
+// Definitions by: Sam Verschueren <https://github.com/SamVerschueren>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module "query-string" {
+    /**
+     * Parse a query string into an object.
+     * Leading ? or # are ignored, so you can pass location.search or location.hash directly.
+     * @param str
+     */
+    export function parse(str: string): any;
+
+    /**
+     * Stringify an object into a query string, sorting the keys.
+     *
+     * @param obj
+     */
+    export function stringify(obj: any): string;
+
+    /**
+     * Extract a query string from a URL that can be passed into .parse().
+     *
+     * @param str
+     */
+    export function extract(str: string): string;
+}