Bundle size under cap

What TestSprite reads

The testing agent reads this JSON, opens the deployed URL in headless Chromium, executes each action step, evaluates each assertion. Verdict: passed / failed / blocked / inconclusive.

{
  "projectId": "1ad26753-ee03-4689-8f0f-6fa5d67c5c72",
  "type": "frontend",
  "name": "Performance — initial JS bundle under 300kb gzipped",
  "description": "The first JS bundle the browser downloads to render the bracket must be ≤300kb gzipped. Catches deployables that ship the entire React app + framer-motion + a chart library to a page that doesn't need them.",
  "priority": "p2",
  "metadata": {
    "category": "performance",
    "stage": "all"
  },
  "planSteps": [
    {
      "type": "action",
      "description": "Navigate to the homepage with browser cache disabled"
    },
    {
      "type": "assertion",
      "description": "Verify the sum of all .js resources transferred on the initial page load (with gzip / brotli compression applied) is ≤ 300kb. Confirm by reading the Network panel's transfer-size column filtered by type=script"
    }
  ]
}