ECO-CMP-JS-003 — Large unoptimized bundles¶

Category: Computation (CMP)
Family: JavaScript (JS)
Layer: Code
Tier: 1
Severity: warning
Tags: javascript, bundling, frontend
Legacy ID: ECO-JS-003

Summary¶

Large bundles increase transfer size, parse time, and energy use.

Users pay for bytes and CPU; so do battery and emissions.

{
  "confidence": 0.75,
  "notes": "Affects every page view.",
  "type": "network"
}

{
  "languages": [
    "javascript"
  ],
  "method": "trace"
}

{
  "guidance": "Enable tree-shaking, code splitting, and remove dead deps.",
  "tradeoffs": "Build config changes."
}

{
  "system_layers": [
    "code"
  ]
}