name: CI

on:
  pull_request:
  push:
    branches: [main]

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Reject merge conflict markers
        run: |
          if git grep -nE '^(<<<<<<<|>>>>>>>)' -- . \
            ':(exclude)package-lock.json'; then
            echo "::error::Merge conflict markers found in tracked files"
            exit 1
          fi
          echo "No conflict markers found"

      - uses: actions/setup-node@v4
        with:
          node-version: "22"
          cache: "npm"
      - run: npm ci
      - run: npm run lint
      - run: npm run typecheck
      - run: npm test