#180 export form state type

Author: crazyursus92

lib/index.d.ts

@@ -1,3 +1,4 @@
+import { FormProps } from './index.d';
 /// <reference lib="svelte2tsx" />
 import type {SvelteComponentTyped} from 'svelte';
 import type {Readable, Writable} from 'svelte/store';
@@ -99,4 +100,4 @@ declare class ErrorMessage extends SvelteComponentTyped<
 
 declare const key: {};
 
-export {createForm, key, Form, Field, Select, ErrorMessage, Textarea};
+export {createForm, key, Form, Field, Select, ErrorMessage, Textarea, type FormState};