fix(blocks): plugin's destroy() method will be called on blocks removing (#1719)

* Plugin's destroy() method on blocks removing

* Add changelog

Co-authored-by: Georgy Berezhnoy <gohabereg@gmail.com>
Co-authored-by: George Berezhnoy <gohabereg@users.noreply.github.com>

docs/CHANGELOG.md

@@ -6,6 +6,7 @@
 - `Improvement` *Tunes API* - Tunes now can provide sanitize configuration
 - `Fix` *Tunes API* - Tune config now passed to constructor under `config` property
 - `Fix` *Types* - Add common type for internal and external Tools configuration
+- `Fix` — Block's destroy method is called on block deletion
 
 ### 2.22.1
 

src/components/modules/blockManager.ts

@@ -439,6 +439,7 @@ export default class BlockManager extends Module {
 
     const blockToRemove = this._blocks[index];
 
+    blockToRemove.destroy();
     this._blocks.remove(index);
 
     /**

src/components/utils/events.ts

@@ -1,3 +1,5 @@
+import { isEmpty } from '../utils';
+
 /**
  * @class EventDispatcher
  *
@@ -68,7 +70,7 @@ export default class EventsDispatcher<Events extends string = string> {
    * @param {object} data - subscribers get this data when they were fired
    */
   public emit(eventName: Events, data?: object): void {
-    if (!this.subscribers[eventName]) {
+    if (isEmpty(this.subscribers) || !this.subscribers[eventName]) {
       return;
     }