add HTMLAttributes to defaultoptions

packages/extension-highlight/src/index.ts

@@ -5,12 +5,22 @@ import {
   markPasteRule,
 } from '@tiptap/core'
 
+export interface HighlightOptions {
+  HTMLAttributes: {
+    [key: string]: any
+  },
+}
+
 export const inputRegex = /(?:^|\s)((?:==)((?:[^~]+))(?:==))$/gm
 export const pasteRegex = /(?:^|\s)((?:==)((?:[^~]+))(?:==))/gm
 
 const Highlight = createMark({
   name: 'highlight',
 
+  defaultOptions: <HighlightOptions>{
+    HTMLAttributes: {},
+  },
+
   addAttributes() {
     return {
       color: {