diff --git a/jss/jss-tests.ts b/jss/jss-tests.ts
new file mode 100644
index 0000000000..e5bde70be3
--- /dev/null
+++ b/jss/jss-tests.ts
@@ -0,0 +1,16 @@
+/// <reference path="jss.d.ts" />
+
+jss.set('.demo', {
+    'font-size': '15px',
+    'color': 'red'
+});
+
+jss.get('.demo');
+
+jss.get();
+
+jss.getAll('.demo');
+
+jss.remove('.demo');
+
+jss.remove();
diff --git a/jss/jss.d.ts b/jss/jss.d.ts
new file mode 100644
index 0000000000..61938cc020
--- /dev/null
+++ b/jss/jss.d.ts
@@ -0,0 +1,50 @@
+// Type definitions for jss v0.6
+// Project: https://github.com/Box9/jss
+// Definitions by: Valentin Robert <https://github.com/Ptival/>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+interface Properties {
+    [name: string]: string;
+}
+
+interface Selectors {
+    [selector: string]: Properties;
+}
+
+interface JSS {
+    /**
+     * Retrieve all rules added via JSS, organized by selectors
+     */
+    get(): Selectors;
+
+    /**
+     * Retrieve rules added via JSS for a given selector
+     * @param s CSS selector
+     */
+    get(s: string): Properties;
+
+    /**
+     * Retrieve all rules specified for a given selector (not necessarily added via JSS)
+     * @param s CSS selector
+     */
+    getAll(s: string): Properties;
+
+    /**
+     * Remove all rules added via JSS
+     */
+    remove(): void;
+
+    /**
+     * Remove all rules added via JSS for the given selector
+     */
+    remove(s: string): void;
+
+    /**
+     * Add or extend an existing rule
+     * @param s CSS selector
+     * @param p CSS properties
+     */
+    set(s: string, p: Properties): void;
+}
+
+declare var jss: JSS;