Examine source code of Kaguya

{
  "browser_specific_settings": {
    "gecko": {
      "id": "spaghettdev@kagyua.com"
    }
  },
  "manifest_version": 2,
  "name": "Kaguya",
  "version": "1.1.48",
  "description": "An extension that allow you to use Kaguya",
  "background": {
    "scripts": [
      "src/pages/background/index.js"
    ],
    "type": "module",
    "persistent": true
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {},
  "content_scripts": [
    {
      "matches": [
        "https://kaguya.app/*",
        "http://localhost/*",
        "https://*.kaguya.app/*"
      ],
      "js": [
        "src/pages/content/index.js"
      ],
      "run_at": "document_start"
    }
  ],
  "devtools_page": "src/pages/devtools/index.html",
  "web_accessible_resources": [
    "website-overrides/*.js",
    "assets/js/*.js",
    "assets/css/*.css",
    "icon16.png",
    "icon32.png",
    "icon48.png",
    "icon128.png",
    "src/pages/sandbox/index.html"
  ],
  "permissions": [
    "tabHide",
    "declarativeNetRequest",
    "webRequest",
    "webRequestBlocking",
    "https://*.kaguya.app/*",
    "https://*/*"
  ],
  "content_security_policy": "default-src 'self'; script-src 'self' 'unsafe-eval'; img-src *; connect-src ws://localhost:8081/ http://* https://* data: blob: filesystem:;"
}