Examine source code of ChessSolve

{
  "manifest_version": 3,
  "name": "ChessSolve",
  "version": "2.9.0",
  "description": "Live Stockfish engine analysis, evaluation bar, and best-move arrows directly on your Chess.com and Lichess board during practice.",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "*://*.chess.com/*",
    "*://*.lichess.org/*",
    "https://chesssolve.com/*"
  ],
  "background": {
    "service_worker": "analyzer.js",
    "scripts": [
      "analyzer.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "chesssolve@chesssolve.com",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "websiteContent"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.chess.com/*"
      ],
      "js": [
        "chess-base.js",
        "chess-board.js"
      ]
    },
    {
      "matches": [
        "*://*.lichess.org/*"
      ],
      "js": [
        "chess-base.js",
        "lychess-board.js"
      ]
    }
  ],
  "action": {
    "default_popup": "index.html"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  }
}