Examine source code of Symvek Shield: Privacy Score & Tracker Blocker

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "2.3.1",
  "short_name": "Symvek Shield",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "tabs",
    "declarativeNetRequest",
    "declarativeNetRequestFeedback",
    "webRequest",
    "webNavigation",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "content-scripts/fingerprint.js",
    "content-scripts/leak-monitor.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "shield@symvek.com",
      "strict_min_version": "113.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "easylist",
        "enabled": true,
        "path": "rules/easylist.json"
      },
      {
        "id": "easyprivacy",
        "enabled": true,
        "path": "rules/easyprivacy.json"
      }
    ]
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Symvek Shield",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/fingerprint-listener.js",
        "content-scripts/mirror-detect.js"
      ],
      "world": "ISOLATED"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/fingerprint.js"
      ],
      "world": "MAIN"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content-scripts/leak-monitor-listener.js"
      ],
      "world": "ISOLATED"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content-scripts/leak-monitor.js"
      ],
      "world": "MAIN"
    }
  ]
}