Lighthouse MCP

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find_unused_javascript

Identify and report unused JavaScript code from a webpage to optimize bundle size. Specify the URL, device type, and minimum unused bytes threshold for precise auditing.

Instructions

Find unused JavaScript code to reduce bundle size

Input Schema

Name	Required	Description	Default
`device`	No	Device to emulate (default: desktop)	desktop
`minBytes`	No	Minimum unused bytes to report (default: 2048)
`url`	Yes	URL to audit

Input Schema (JSON Schema)

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "properties": {
    "device": {
      "default": "desktop",
      "description": "Device to emulate (default: desktop)",
      "enum": [
        "desktop",
        "mobile"
      ],
      "type": "string"
    },
    "minBytes": {
      "default": 2048,
      "description": "Minimum unused bytes to report (default: 2048)",
      "minimum": 0,
      "type": "number"
    },
    "url": {
      "description": "URL to audit",
      "type": "string"
    }
  },
  "required": [
    "url"
  ],
  "type": "object"
}

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