From 58f009a2a69365abc2d3af187ef0abdc9e4f5297 Mon Sep 17 00:00:00 2001
From: Takayuki Sato <sttk.xslet@gmail.com>
Date: Mon, 4 Sep 2023 07:45:45 +0900
Subject: [PATCH] fix: Exclude example flags provided by node (#66)

Co-authored-by: Blaine Bublitz <blaine.bublitz@gmail.com>
---
 index.js      |  2 +-
 test/index.js | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index ac38f51..d5c0e24 100644
--- a/index.js
+++ b/index.js
@@ -91,8 +91,8 @@ function getFlags(cb) {
 
     var index = result.indexOf('\nOptions:');
     if (index >= 0) {
+      result = result.slice(index);
       var regexp = /^\s\s--[\w-]+/gm;
-      regexp.lastIndex = index;
       var matchedFlags = result.match(regexp);
       if (matchedFlags) {
         flags = flags.concat(
diff --git a/test/index.js b/test/index.js
index 75b8acf..8e39b09 100644
--- a/test/index.js
+++ b/test/index.js
@@ -225,6 +225,16 @@ describe('v8flags', function () {
       done();
     });
   });
+
+  it('does not detect nodejs example flags', function (done) {
+    eraseHome();
+    var v8flags = require('../');
+    v8flags(function (err, flags) {
+      expect(flags).not.toContain('--flag');
+      expect(flags).not.toContain('--no-flag');
+      done();
+    });
+  });
 });
 
 describe('config-path', function () {