From 16ed1459a6c315f4637e6682200e1db6f469b900 Mon Sep 17 00:00:00 2001
From: XD <xueying_deng@outlook.com>
Date: Thu, 11 Apr 2024 12:21:53 +0200
Subject: [PATCH] fix: extend listeners

---
 .github/workflows/perf-test.yml | 2 +-
 perf/perftest.js                | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/perf-test.yml b/.github/workflows/perf-test.yml
index d47b79f..8c177c3 100644
--- a/.github/workflows/perf-test.yml
+++ b/.github/workflows/perf-test.yml
@@ -19,7 +19,7 @@ jobs:
           node-version: '20.x'
       - run: npm ci
       - run: npm run build --if-present
-      - run: node ./perf/perftest.js | tee output.txt
+      - run: node ./perf/perftest.js | tee >(grep 'ops' > output.txt)
       
       - name: Store benchmark result
         uses: benchmark-action/github-action-benchmark@v1
diff --git a/perf/perftest.js b/perf/perftest.js
index 562bed4..d8bebc6 100644
--- a/perf/perftest.js
+++ b/perf/perftest.js
@@ -5,6 +5,9 @@ const { Tree } = require("../dist/tests/helper");
 const { Parser } = require("n3");
 const { TREE } = require("@treecg/types");
 
+// Increase the max listeners to prevent warnings
+process.setMaxListeners(20);
+
 let tree = new Tree(
   (x, numb) => {
     if (!numb) {