neovim/.github/workflows/labeler_issue.yml

name: "labeler: issue"
on:
  issues:
    types: [opened]

permissions: {}

jobs:
  labeler:
    permissions:
      issues: write
    runs-on: ubuntu-latest
    steps:
      - name: check issue title
        uses: actions/github-script@v9
        with:
          script: |
            const title = context.payload.issue.title;
            const titleSplit = title.split(/\b/).map(e => e.toLowerCase());
            const keywords = ['api', 'lsp', 'treesitter', 'ui', 'ui2'];
            var labels = new Set();

            for (const keyword of keywords) {
              if (titleSplit.includes(keyword)) {
                labels.add(keyword)
              }
            }

            // Special cases.
            if (titleSplit.includes('vim.pack')) {
              labels.add('packages')
            }

            if (labels.size !== 0) {
              github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                labels: Array.from(labels)
              })
            }