Examine source code of KeyFinder

{
  "name": "KeyFinder",
  "description": "Passively discovers API keys, tokens, and secrets leaked in page scripts, DOM, network responses, and browser storage.",
  "version": "2.0.0",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "keyfinder@momenbasel.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/patterns.js",
        "js/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/interceptor.js"
      ],
      "run_at": "document_start",
      "world": "MAIN",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "storage"
  ]
}