diff --git a/node_modules/dialog-polyfill/index.d.ts b/node_modules/dialog-polyfill/index.d.ts
new file mode 100644
index 0000000..2d4de1d
--- /dev/null
+++ b/node_modules/dialog-polyfill/index.d.ts
@@ -0,0 +1,18 @@
+
+interface DialogPolyfillType {
+  registerDialog(dialog: HTMLDialogElement): void;
+  forceRegisterDialog(dialog: HTMLDialogElement): void;
+}
+
+/**
+ * If used as CJS, then "dialogPolyfill" is added to the global scope. Just assert it exists.
+ */
+declare global {
+  const dialogPolyfill: DialogPolyfillType;
+}
+
+/**
+ * If used as ESM, then we export a const of type "DialogPolyfillType" as the default.
+ */
+declare const dialogPolyfill: DialogPolyfillType
+export default dialogPolyfill;