Examine source code of Forevershoppers

{
  "manifest_version": 3,
  "name": "__MSG_chrome_extension_Name__",
  "version": "1",
  "default_locale": "en",
  "description": "__MSG_chrome_extension_description__",
  "homepage_url": "https://forevershoppers.com/",
  "icons": {
    "128": "icons/logo.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "cookies"
  ],
  "host_permissions": [
    "https://forevershoppers.com/"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "__MSG_chrome_extension_Name__",
    "default_icon": "icons/logo.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "https://forevershoppers.com/"
      ],
      "js": [
        "js/content-script.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "js/content-script.js",
        "css/fix.css",
        "icons/logo.png",
        "icons/coupon.svg"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@forevershoppers.com"
    }
  }
}