Examine source code of WikiTrace

{
  "manifest_version": 3,
  "name": "WikiTrace",
  "version": "1.4.0",
  "description": "Track, archive and visualise every Wikipedia page you visit.",
  "browser_specific_settings": {
    "gecko": {
      "id": "wikitrace@robertoreale.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage",
    "unlimitedStorage",
    "webNavigation",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "lib/d3.min.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "WikiTrace",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  }
}