add basic text style mark

packages/extension-text-style/index.ts

@@ -0,0 +1,25 @@
+import { createMark } from '@tiptap/core'
+
+const TextStyle = createMark({
+  name: 'textStyle',
+
+  parseHTML() {
+    return [
+      {
+        tag: 'span',
+      },
+    ]
+  },
+
+  renderHTML({ attributes }) {
+    return ['span', attributes, 0]
+  },
+})
+
+export default TextStyle
+
+declare module '@tiptap/core/src/Editor' {
+  interface AllExtensions {
+    TextStyle: typeof TextStyle,
+  }
+}