Chess.com bughouse extension

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Chess.com bughouse extension",
  "version": "1.1.6",
  "description": "Chess.com bughouse extension",
  "permissions": [
    "storage"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.chess.com/*"
      ],
      "css": [
        "button-styles.css",
        "appear-event.css"
      ],
      "js": [
        "content.js",
        "buttons.js",
        "sound.js",
        "dropkeys.js",
        "opponent.js",
        "seek-buttons.js",
        "arrows-handler.js",
        "rating-range.js"
      ]
    }
  ]
}