#!/usr/bin/env node
// Fail loudly when the browser lane is invoked without prerequisites.
// The lane must never report "green" simply because nothing browser-backed
// was discovered — a missing RUN_BROWSER_TESTS or PLAYWRIGHT_CHROMIUM_BIN is
// a real configuration error, not a passing run. DEV_SERVER_URL intentionally
// stays optional here because tests/invariants/support/env.ts defines a
// runtime default of http://localhost:7002.

const missing = []
if (process.env.RUN_BROWSER_TESTS !== '1') {
  missing.push('RUN_BROWSER_TESTS=1')
}
if (!process.env.PLAYWRIGHT_CHROMIUM_BIN) {
  missing.push('PLAYWRIGHT_CHROMIUM_BIN=<chromium executable path>')
}

if (missing.length > 0) {
  console.error(
    'Invariant lane prerequisites missing:\n  - '
    + missing.join('\n  - ')
    + '\n\nThe browser lane is opt-in. Set these env vars and run again:\n'
    + '  RUN_BROWSER_TESTS=1 \\\n'
    + '  DEV_SERVER_URL=http://localhost:7002  # optional; defaults to this value \\\n'
    + '  PLAYWRIGHT_CHROMIUM_BIN=$(command -v chromium) \\\n'
    + '  bun run test:invariants',
  )
  process.exit(1)
}