diff --git a/rison/rison-tests.ts b/rison/rison-tests.ts
new file mode 100644
index 0000000000..ecdbaf29e5
--- /dev/null
+++ b/rison/rison-tests.ts
@@ -0,0 +1,15 @@
+/// <reference path="rison.d.ts" />
+
+rison.encode({hello: "world"});
+
+rison.encode_object({hello: "1", world: 2});
+
+rison.encode_array([1, 2, "test"]);
+
+rison.encode_uri({hello: "world"});
+
+rison.decode("{test:1}");
+
+rison.decode_object<any>("test:1");
+
+rison.decode_array<number>("1,2,1337");
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diff --git a/rison/rison.d.ts b/rison/rison.d.ts
new file mode 100644
index 0000000000..3f202b3745
--- /dev/null
+++ b/rison/rison.d.ts
@@ -0,0 +1,57 @@
+// Type definitions for Rison
+// Project: https://github.com/Nanonid/rison
+// Definitions by: Andrei Kurosh <https://github.com/impworks>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare var rison: IRison;
+
+interface IRison {
+    /**
+     * Rison-encodes a javascript structure.
+     * @param obj Object to encode.
+     * @returns {} Encoded string.
+     */
+    encode(obj: any): string;
+
+    /**
+     * Rison-encodes a javascript object without surrounding parens (O-Rison).
+     * @param obj Object to encode.
+     * @returns {} Encoded string.
+     */
+    encode_object<T>(obj: T): string;
+
+    /**
+     * Rison-encodes a javascript array without surrounding parens (A-Rison).
+     * @param obj Object to encode.
+     * @returns {} Encoded string.
+     */
+    encode_array<T>(arr: T[]): string;
+
+    /**
+     * Rison-encodes and then url-escapes a javascript structure.
+     * @param obj Object to encode.
+     * @returns {} Encoded string.
+     */
+    encode_uri(obj: any): string;
+
+    /**
+     * Parses a Rison string into a javascript structure.
+     * @param encoded Encoded string.
+     * @returns {} Resulting array or object.
+     */
+    decode<T>(encoded: string): T;
+
+    /**
+     * Parses a O-Rison string into a javascript object.
+     * @param encoded Encoded string.
+     * @returns {} Resulting object.
+     */
+    decode_object<T>(encoded: string): T;
+
+    /**
+     * Parses a A-Rison string into a javascript array.
+     * @param encoded Encoded string.
+     * @returns {} Resulting array.
+     */
+    decode_array<T>(encoded: string): T[];
+}
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