Examine source code of Dealsdaddy

{
  "manifest_version": 3,
  "name": "Dealsdaddy",
  "description": "Find and apply coupon savings while shopping online.",
  "version": "0.2.3",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "scripting",
    "alarms"
  ],
  "host_permissions": [
    "<all_urls>",
    "https://phpstack-1651298-6564070.cloudwaysapps.com/*"
  ],
  "incognito": "spanning",
  "web_accessible_resources": [
    {
      "resources": [
        "icon/*",
        "assets/*"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "dealsdaddy@dealsdaddy.co.uk",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Dealsdaddy",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "all_frames": false,
      "run_at": "document_end",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}