Examine source code of Xchedule

{
  "manifest_version": 3,
  "name": "Xchedule",
  "version": "1.0.0",
  "description": "Schedule X posts at recurring times, instantly. Toggle a time and X's schedule dialog gets pre-filled on every post.",
  "browser_specific_settings": {
    "gecko": {
      "id": "xchedule@sahbanzar.com",
      "strict_min_version": "121.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://x.com/*"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "service_worker": "src/background.js",
    "scripts": [
      "src/background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://x.com/*"
      ],
      "js": [
        "dist/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "src/popup.html",
    "default_title": "Xchedule",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*"
      ],
      "matches": [
        "https://x.com/*"
      ]
    }
  ]
}