Examine source code of CMeter

{
  "manifest_version": 3,
  "name": "CMeter",
  "description": "Activates Content Meter library for web-pages.",
  "version": "0.6.92",
  "icons": {
    "16": "icon_16.png",
    "48": "icon_48.png",
    "128": "icon_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3cb0155f-44ef-4c3d-954f-f15c24ddb4fc}",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "websiteActivity"
        ]
      }
    }
  },
  "homepage_url": "https://panel.kantar.lt/user/product/plugin",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "match_about_blank": false,
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "init.js",
        "modules/storageSync.js"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "dist/*.js",
        "addonParams.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "webRequest",
    "webNavigation",
    "scripting",
    "declarativeNetRequest",
    "declarativeNetRequestWithHostAccess"
  ],
  "background": {
    "scripts": [
      "modules/httpListener.js",
      "modules/utils.js",
      "modules/defaultConfig.js",
      "modules/storageSync.js",
      "modules/PixelAudit.js",
      "background.js"
    ]
  }
}