Examine source code of Crom Companion

{
  "manifest_version": 3,
  "name": "Crom Companion",
  "description": "__MSG_manifestDescription__",
  "version": "1.0.8",
  "default_locale": "en",
  "permissions": [
    "activeTab",
    "identity",
    "storage"
  ],
  "background": {
    "type": "module",
    "scripts": [
      "background/main.js"
    ]
  },
  "action": {
    "default_title": "Crom Companion",
    "default_icon": "icon.png",
    "default_popup": "popup/popup.html"
  },
  "host_permissions": [
    "https://apiv2.crom.avn.sh/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.wikidot.com/*"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "*://*.wikidot.com/*"
      ],
      "resources": [
        "InterVariable.woff2",
        "InterVariable-Italic.woff2"
      ]
    },
    {
      "matches": [
        "https://crom.avn.sh/*"
      ],
      "resources": [
        "redirect.html",
        "redirect.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@companion.crom.avn.sh",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity"
        ],
        "optional": [
          "websiteContent"
        ]
      }
    }
  }
}