From d683a76a49050df0834daad86be8558f1534da0c Mon Sep 17 00:00:00 2001
From: Jared White <jared@whitefusion.studio>
Date: Wed, 11 May 2022 05:08:53 -0700
Subject: [PATCH] Ensure `FormDataPolyfill` arg is optional (#749)

Fixes #747
---
 src/internal/formdata-event-polyfill.ts | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/internal/formdata-event-polyfill.ts b/src/internal/formdata-event-polyfill.ts
index 4f7cb2055..e4145a113 100644
--- a/src/internal/formdata-event-polyfill.ts
+++ b/src/internal/formdata-event-polyfill.ts
@@ -26,13 +26,21 @@ class FormDataEventPolyfill extends Event {
 class FormDataPolyfill extends FormData {
   private form: HTMLFormElement;
 
-  constructor(form: HTMLFormElement) {
-    super(form);
-    this.form = form;
-    form.dispatchEvent(new FormDataEventPolyfill(this));
+  constructor(form?: HTMLFormElement | null) {
+    if (form) {
+      super(form);
+      this.form = form
+      form.dispatchEvent(new FormDataEventPolyfill(this));
+    } else {
+      super();
+    }
   }
 
   append(name: string, value: any) {
+    if (!this.form) {
+      return super.append(name, value)
+    }
+
     let input = this.form.elements[name as any] as HTMLInputElement;
 
     if (!input) {