At least ChatGPT said it's good. I just spent 21 dollars on ChatGPT today.

Great idea — converting osLabels to a Set is a clean way to prevent duplicate labels and make your intention explicit.

Here's how you'd update your script:

✅ Version using Set for osLabels

const issue = await github.rest.issues.get({
 owner: context.repo.owner,
 repo: context.repo.repo,
 issue_number: context.issue.number,
});
const body = issue.data.body || '';
const osLabels = new Set();
if (body.includes('Operating System: Darwin')) {
 osLabels.add('os: macOS');
}
if (body.includes('Operating System: Linux')) {
 osLabels.add('os: Linux');
}
if (body.includes('Operating System: Windows')) {
 osLabels.add('os: Windows');
}
// Combine with static labels, converting Set to Array
await github.rest.issues.addLabels({
 issue_number: context.issue.number,
 owner: context.repo.owner,
 repo: context.repo.repo,
 labels: ['issue-status: needs-triage', ...osLabels],
});

🔍 Why Use Set?

• Prevents duplicates (in case multiple OS lines appear — unlikely, but good hygiene).
• Semantic clarity — shows you're collecting unique labels.

✅ Optional Improvements

• Case-insensitive matching:

  const body = (issue.data.body || '').toLowerCase();
  if (body.includes('operating system: darwin')) osLabels.add('os: macOS');

• Use a map if you want to reduce repetition:

  const osMap = {
   'Darwin': 'os: macOS',
   'Linux': 'os: Linux',
   'Windows': 'os: Windows',
  };
  Object.entries(osMap).forEach(([keyword, label]) => {
   if (body.includes(`Operating System: ${keyword}`)) {
   osLabels.add(label);
   }
  });

Let me know if you want to generalize this for other metadata fields too.

might need some time to think about it haha

I actually learnt some of it from cpython and airflow