Examine source code of chesscom-to-lichess-tool

{
  "manifest_version": 2,
  "name": "Chess.com to Lichess",
  "version": "1.0.10",
  "description": "One-click export of Chess.com bot and human games to the Lichess PGN import page.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "*://www.chess.com/*",
    "*://chess.com/*",
    "*://lichess.org/*"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Export to Lichess"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.chess.com/*",
        "*://chess.com/*"
      ],
      "js": [
        "content-chesscom.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://lichess.org/paste*"
      ],
      "js": [
        "content-lichess.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "chesscom-to-lichess@extensions.local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}