diff --git a/packages/core/src/Editor.ts b/packages/core/src/Editor.ts
index 3bbc7260..e35aa46e 100644
--- a/packages/core/src/Editor.ts
+++ b/packages/core/src/Editor.ts
@@ -51,10 +51,10 @@ type EditorContent = string | JSON | null
 
 interface EditorOptions {
   element: Element,
-  content: EditorContent
-  extensions: (Extension | Node | Mark)[]
+  content: EditorContent,
+  extensions: (Extension | Node | Mark)[],
   injectCSS: Boolean,
-  autoFocus: 'start' | 'end' | number | boolean | null
+  autoFocus: 'start' | 'end' | number | boolean | null,
 }
 
 @magicMethods
diff --git a/packages/extension-focus/index.ts b/packages/extension-focus/index.ts
index ee5ec51f..806464d9 100644
--- a/packages/extension-focus/index.ts
+++ b/packages/extension-focus/index.ts
@@ -2,7 +2,7 @@ import { Extension } from '@tiptap/core'
 import { Plugin } from 'prosemirror-state'
 import { DecorationSet, Decoration } from 'prosemirror-view'
 
-type FocusOptions = {
+interface FocusOptions {
   className: string,
   nested: boolean,
 }
@@ -11,8 +11,8 @@ export default class Focus extends Extension {
 
   name = 'focus'
 
-  constructor(focusOptions: FocusOptions) {
-    super(focusOptions)
+  constructor(options: Partial<FocusOptions> = {}) {
+    super(options)
   }
 
   defaultOptions(): FocusOptions {
diff --git a/packages/extension-heading/index.ts b/packages/extension-heading/index.ts
index c8d72ea1..72b631e9 100644
--- a/packages/extension-heading/index.ts
+++ b/packages/extension-heading/index.ts
@@ -6,7 +6,7 @@ import { textblockTypeInputRule } from 'prosemirror-inputrules'
 type Level = 1 | 2 | 3 | 4 | 5 | 6
 
 interface HeadingOptions {
-  levels?: Level[],
+  levels: Level[],
 }
 
 declare module '@tiptap/core/src/Editor' {
@@ -19,6 +19,10 @@ export default class Heading extends Node {
 
   name = 'heading'
 
+  constructor(options: Partial<HeadingOptions> = {}) {
+    super(options)
+  }
+
   defaultOptions(): HeadingOptions {
     return {
       levels: [1, 2, 3, 4, 5, 6],
diff --git a/packages/extension-history/index.ts b/packages/extension-history/index.ts
index 911e0e1f..2bc3ac75 100644
--- a/packages/extension-history/index.ts
+++ b/packages/extension-history/index.ts
@@ -22,7 +22,7 @@ export default class History extends Extension {
 
   name = 'history'
   
-  constructor(options?: HistoryOptions) {
+  constructor(options: Partial<HistoryOptions> = {}) {
     super(options)
   }