feat: free memory automatically (#5225)

lib/binding_web/test/memory.ts

@@ -0,0 +1,20 @@
+import { EventEmitter } from 'events';
+import { Session } from 'inspector';
+
+const session = new Session();
+session.connect();
+
+export function gc() {
+  session.post('HeapProfiler.collectGarbage');
+}
+
+export const event = new EventEmitter();
+
+export class Finalizer<T> extends FinalizationRegistry<T> {
+  constructor(handler: (value: T) => void) {
+    super((value) => {
+      handler(value);
+      event.emit('gc');
+    });
+  }
+}