diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..78cb8b0
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,21 @@
+import { fileSync, dirSync, tmpNameSync, setGracefulCleanup } from 'tmp';
+import { Options, SimpleOptions } from 'tmp';
+
+export interface DirectoryResult {
+    path: string;
+    cleanup(): void;
+}
+
+export interface FileResult extends DirectoryResult {
+    fd: number;
+}
+
+export function file(options?: Options): Promise<FileResult>;
+export function withFile<T>(fn: (result: FileResult) => Promise<T>): Promise<T>;
+
+export function dir(options?: Options): Promise<DirectoryResult>;
+export function withDir<T>(fn: (results: DirectoryResult) => Promise<T>): Promise<T>;
+
+export function tmpName(options?: SimpleOptions): Promise<string>; 
+
+export { fileSync, dirSync, tmpNameSync, setGracefulCleanup }
\ No newline at end of file
diff --git a/package.json b/package.json
index cecec51..521f0eb 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "1.0.4",
   "description": "The tmp package with promises support and disposers.",
   "main": "index.js",
+  "types": "index.d.ts",
   "scripts": {
     "test": "mocha"
   },
@@ -24,6 +25,7 @@
     "tmp": "0.0.33"
   },
   "devDependencies": {
+    "@types/tmp": "0.0.33",
     "mocha": "^3.1.2"
   }
 }