Bizarre DisplayObject.dispatch mechanism

src/lib/extensions/-load-extensions.ts

@@ -6,6 +6,7 @@ import "./pixi-color";
 import "./pixi-container-flip";
 import "./pixi-displayobject-async";
 import "./pixi-displayobject-convenience";
+import "./pixi-displayobject-dispatch";
 import "./pixi-displayobject-mixin";
 import "./pixi-displayobject-ticker";
 import "./pixi-displayobject-track";

src/lib/extensions/pixi-displayobject-dispatch.ts

@@ -0,0 +1,36 @@
+import { DisplayObject } from "pixi.js";
+
+interface DispatchingDisplayObject<TEvent extends string> {
+    dispatch(event: TEvent): void;
+    handles(event: TEvent, fn: (self: this) => unknown): this;
+}
+
+declare module "pixi.js" {
+    interface DisplayObject {
+        dispatches<TEvent extends string>(): this & DispatchingDisplayObject<TEvent>;
+    }
+}
+
+Object.defineProperties(DisplayObject.prototype, {
+    dispatches: {
+        value: function (this: DisplayObject) {
+            return this;
+        },
+        configurable: true,
+    },
+    dispatch: {
+        value: function (this: DisplayObject, event: string) {
+            this.emit(event, this);
+        },
+        configurable: true,
+    },
+    handles: {
+        value: function (this: DisplayObject, event: string, fn: (self: any) => unknown) {
+            this.on(event, fn);
+            return this;
+        },
+        configurable: true,
+    },
+});
+
+export default 0;