From f5f6a9a11b3606bd6afb6836aefad1e88bd61b82 Mon Sep 17 00:00:00 2001
From: Joao Victor Vasconcelos <pel118201@gmail.com>
Date: Thu, 8 Oct 2026 11:22:35 -0300
Subject: [PATCH] fix(diagnostics): avoid duplicate child stat updates

---
 src/stats/stats-provider.test.ts | 30 ++++++++++++++++++++++++++++++
 src/stats/stats-provider.ts      | 10 ++++++----
 2 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/src/stats/stats-provider.test.ts b/src/stats/stats-provider.test.ts
index 82a5be32..5f2820ca 100644
--- a/src/stats/stats-provider.test.ts
+++ b/src/stats/stats-provider.test.ts
@@ -2,6 +2,36 @@ import { describe, it, expect } from 'vitest';
 import { StatData, StatDataModel, StatsProvider } from './stats-provider';
 
 describe('StatsProvider', () => {
+    it('emits each child statistic once to each listener', () => {
+        const provider = new StatsProvider('test', 'test');
+        const firstListenerStats: StatData[] = [];
+        const secondListenerStats: StatData[] = [];
+
+        provider.addStatListener({
+            onStatUpdated: (stat: StatData) => firstListenerStats.push(stat),
+        });
+        provider.addStatListener({
+            onStatUpdated: (stat: StatData) => secondListenerStats.push(stat),
+        });
+
+        provider.setStats({
+            tick: 1,
+            type: 'stats',
+            stats: [{
+                name: 'parent',
+                should_aggregate: false,
+                children: [{
+                    name: 'child',
+                    should_aggregate: false,
+                    values: [1],
+                }],
+            }],
+        });
+
+        expect(firstListenerStats.map((stat: StatData) => stat.name)).toEqual(['parent', 'child']);
+        expect(secondListenerStats.map((stat: StatData) => stat.name)).toEqual(['parent', 'child']);
+    });
+
     it('aggregateData successful', async () => {
         const childDataA: StatDataModel = {
             name: 'childA',
diff --git a/src/stats/stats-provider.ts b/src/stats/stats-provider.ts
index ab0a6fcb..670569f0 100644
--- a/src/stats/stats-provider.ts
+++ b/src/stats/stats-provider.ts
@@ -168,11 +168,13 @@ export class StatsProvider {
 
             if (aggregateChildData !== undefined) {
                 listener.onStatUpdated?.(aggregateChildData);
-            } else if (stat.children) {
-                stat.children.forEach((child: StatDataModel) => {
-                    this._fireStatUpdated(child, tick, statData);
-                });
             }
         });
+
+        if (aggregateChildData === undefined && stat.children) {
+            stat.children.forEach((child: StatDataModel) => {
+                this._fireStatUpdated(child, tick, statData);
+            });
+        }
     }
 }