dawiidio · December 17, 2021 11:05 · Dec 17, 2021
diff --git a/nestedCounter.ts b/nestedCounter.ts
@@ -0,0 +1,30 @@
+class Counter {
+    private child: Counter[] = [];
+    private value: number = 0;
+    private destroyed: boolean = false;
+
+    increase(): number {
+        if (this.destroyed)
+            throw new Error(`destroyed counter can not be increased`);
+
+        return ++this.value;
+    }
+
+    getCount(): number {
+        return this.value;
+    }
+
+    destroy() {
+        this.destroyed = true;
+
+        this.child.forEach(c => c.destroy());
+    }
+
+    spawn(): Counter {
+        const child = new Counter();
+
+        this.child.push(child);
+
+        return child;
+    }
+}
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