Examine source code of Chess.com to Lichess

{
  "manifest_version": 3,
  "name": "Chess.com to Lichess",
  "version": "1.0",
  "description": "Add a button to export games from Chess.com analysis to Lichess",
  "permissions": [
    "storage",
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "*://www.chess.com/analysis/*",
    "*://lichess.org/paste*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.chess.com/analysis/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://lichess.org/paste?ext=true"
      ],
      "js": [
        "lichess.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_title": "Chess.com to Lichess"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/lichess.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "chess-to-lichess@example.com",
      "strict_min_version": "102.0"
    }
  }
}