rename package folders

packages/core/src/Extension.ts

@@ -0,0 +1,46 @@
+import { Editor } from './Editor'
+
+export default abstract class Extension {
+
+  constructor(options = {}) {
+    this.options = {
+      ...this.defaultOptions,
+      ...options,
+    }
+  }
+  
+  editor!: Editor
+  options: { [key: string]: any } = {}
+  defaultOptions: { [key: string]: any } = {}
+  
+  public abstract name: string
+  
+  public type = 'extension'
+
+  public created() {}
+
+  public bindEditor(editor: Editor): void {
+    this.editor = editor
+  }
+
+  update(): any {
+    return () => {}
+  }
+
+  plugins(): any {
+    return []
+  }
+
+  inputRules(): any {
+    return []
+  }
+
+  pasteRules(): any {
+    return []
+  }
+
+  keys(): any {
+    return {}
+  }
+
+}