Examine source code of PrimAssist

{
  "manifest_version": 3,
  "name": "PrimAssist",
  "version": "1.0.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "archways@gmx.us",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "PrimAssist",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "host_permissions": [
    "https://mau.hr.evry.se/*",
    "http://localhost:4007/*",
    "http://localhost/*",
    "https://mlt.k14net.org/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://mau.hr.evry.se/primula*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*.png"
      ],
      "matches": [
        "https://mau.hr.evry.se/*"
      ]
    }
  ]
}