diff --git a/packages/core/src/Extension.ts b/packages/core/src/Extension.ts
index 78e1d79f..9284d82b 100644
--- a/packages/core/src/Extension.ts
+++ b/packages/core/src/Extension.ts
@@ -4,6 +4,11 @@ import { Editor } from './Editor'
 import { GlobalAttributes } from './types'
 
 export interface ExtensionSpec<Options = {}, Commands = {}> {
+  /**
+   * Name
+   */
+  name?: string,
+
   /**
    * Default options
    */
@@ -78,6 +83,7 @@ export type Extension = Required<Omit<ExtensionSpec, 'defaultOptions'> & {
  * Default extension
  */
 export const defaultExtension: Extension = {
+  name: 'extension',
   type: 'extension',
   options: {},
   addGlobalAttributes: () => [],
diff --git a/packages/core/src/utils/getSchema.ts b/packages/core/src/utils/getSchema.ts
index e64a9873..8e8bac1a 100644
--- a/packages/core/src/utils/getSchema.ts
+++ b/packages/core/src/utils/getSchema.ts
@@ -5,14 +5,14 @@ import getAttributesFromExtensions from './getAttributesFromExtensions'
 import getRenderedAttributes from './getRenderedAttributes'
 import isEmptyObject from './isEmptyObject'
 
-function cleanUpSchemaItem(data: any) {
+function cleanUpSchemaItem<T>(data: T) {
   return Object.fromEntries(Object.entries(data).filter(([key, value]) => {
     if (key === 'attrs' && isEmptyObject(value)) {
       return false
     }
 
     return value !== null && value !== undefined
-  }))
+  })) as T
 }
 
 export default function getSchema(extensions: Extensions): Schema {