diff --git a/autosize-input.d.ts b/autosize-input.d.ts
new file mode 100644
index 0000000..c48a2bd
--- /dev/null
+++ b/autosize-input.d.ts
@@ -0,0 +1,11 @@
+declare module "autosize-input" {
+  type AutosizeInputOptions = { minWidth?: boolean | string };
+  type AutosizeInputCleanup = () => void;
+
+  function autosizeInput(
+    element: HTMLInputElement,
+    options?: AutosizeInputOptions
+  ): AutosizeInputCleanup;
+
+  export = autosizeInput;
+}