Examine source code of Headline Cleaner

{
  "manifest_version": 3,
  "name": "Headline Cleaner",
  "version": "2.0.0",
  "description": "__MSG_description__",
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://api.headlinecleaner.com/*",
    "https://headlinecleaner.com/login"
  ],
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "otsikkori@dugongi.com"
    },
    "gecko_android": {
      "id": "otsikkori@dugongi.com"
    }
  },
  "action": {
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content-script/import-content-script.js"
      ],
      "css": [
        "content-script/content-script.css"
      ]
    }
  ],
  "icons": {
    "48": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "chunks/*-*.js",
        "content-script/content-script.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "https://api.headlinecleaner.com/*",
        "https://headlinecleaner.com/*"
      ]
    }
  ]
}