Examine source code of Loon - Shop Canadian

{
  "manifest_version": 3,
  "name": "Loon - Shop Canadian",
  "version": "0.1.68",
  "description": "Find Canadian alternatives and deals as you shop online.",
  "browser_specific_settings": {
    "gecko": {
      "id": "loon@getloon.ca"
    }
  },
  "homepage_url": "https://getloon.ca",
  "action": {
    "default_icon": "assets/icons/icon48.png",
    "default_popup": "./dist/popup/index.html"
  },
  "options_ui": {
    "page": "./dist/options/index.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "dist/background/index.mjs"
    ],
    "type": "module"
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "activeTab",
    "scripting",
    "alarms",
    "webNavigation"
  ],
  "host_permissions": [
    "*://*.amazon.ca/*",
    "*://*.bestbuy.ca/*",
    "*://*.bureauengros.com/*",
    "*://*.bureauengros.ca/*",
    "*://*.canadiantire.ca/*",
    "*://*.costco.ca/*",
    "*://*.pharmaprix.ca/*",
    "*://*.shoppersdrugmart.ca/*",
    "*://*.staples.ca/*",
    "*://*.walmart.ca/*",
    "https://api.getloon.ca/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.amazon.ca/*",
        "*://*.bestbuy.ca/*",
        "*://*.bureauengros.com/*",
        "*://*.bureauengros.ca/*",
        "*://*.canadiantire.ca/*",
        "*://*.costco.ca/*",
        "*://*.pharmaprix.ca/*",
        "*://*.shoppersdrugmart.ca/*",
        "*://*.staples.ca/*",
        "*://*.walmart.ca/*"
      ],
      "js": [
        "dist/contentScripts/index.global.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "dist/contentScripts/style.css"
      ],
      "matches": [
        "*://*.amazon.ca/*",
        "*://*.bestbuy.ca/*",
        "*://*.bureauengros.com/*",
        "*://*.bureauengros.ca/*",
        "*://*.canadiantire.ca/*",
        "*://*.costco.ca/*",
        "*://*.pharmaprix.ca/*",
        "*://*.shoppersdrugmart.ca/*",
        "*://*.staples.ca/*",
        "*://*.walmart.ca/*"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; connect-src https://api.getloon.ca"
  }
}