fix types

packages/extension-superscript/src/superscript.ts

@@ -1,24 +1,24 @@
-import { Command, Mark, mergeAttributes } from '@tiptap/core'
+import { Mark, mergeAttributes } from '@tiptap/core'
 
 export interface SuperscriptExtensionOptions {
   HTMLAttributes: Object,
 }
 
 declare module '@tiptap/core' {
-  interface Commands {
+  interface Commands<ReturnType> {
     superscript: {
       /**
        * Set a superscript mark
        */
-      setSuperscript: () => Command,
+      setSuperscript: () => ReturnType,
       /**
        * Toggle a superscript mark
        */
-      toggleSuperscript: () => Command,
+      toggleSuperscript: () => ReturnType,
       /**
        * Unset a superscript mark
        */
-      unsetSuperscript: () => Command,
+      unsetSuperscript: () => ReturnType,
     }
   }
 }