Examine source code of CashBlack

{
  "background": {
    "persistent": false,
    "scripts": [
      "res/assets/js/jquery-3.5.1.js",
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/button.png",
    "default_title": "Cashblack"
  },
  "content_scripts": [
    {
      "all_frames": false,
      "js": [
        "res/assets/js/jquery-3.5.1.js",
        "js/content-script.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    }
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "description": "Cashblack is an exciting new online shopping reward.",
  "icons": {
    "16": "icons/button.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "manifest_version": 2,
  "name": "Cashblack",
  "permissions": [
    "https://www.cashblack.amtc.co/cashblack/*"
  ],
  "short_name": "Clashblck",
  "version": "0.1",
  "web_accessible_resources": [
    "*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1b2b4f00-137c-48b7-b33e-d2ae79f5cb99}"
    }
  }
}