Examine source code of ZEvent Alert

{
  "manifest_version": 3,
  "name": "ZEvent Alert",
  "version": "1.0.0",
  "description": "Alertes et classement en direct des streamers du ZEvent. Projet indépendant, sans lien avec l'organisation.",
  "browser_specific_settings": {
    "gecko": {
      "id": "zevent-alert@charityhype",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "alarms",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "https://charityhype.duckdns.org/*",
    "*://*.twitch.tv/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "fonts/*.woff2",
        "icons/icon48.png"
      ],
      "matches": [
        "*://*.twitch.tv/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}