Examine source code of Chess.com Anonymous Mode

{
  "$schema": "http://json.schemastore.org/chrome-manifest",
  "manifest_version": 3,
  "name": "Chess.com Anonymous Mode",
  "version": "1.0.0",
  "description": "Hide players' usernames, icons, and ratings on Chess.com while in a game.",
  "icons": {
    "16": "icon.svg",
    "48": "icon.svg",
    "128": "icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e5778293-b701-4d9f-b1ac-e9d386b21041}"
    }
  },
  "host_permissions": [
    "https://chess.com/*",
    "https://*.chess.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://chess.com/*",
        "https://*.chess.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "https://chess.com/*",
        "https://*.chess.com/*"
      ],
      "resources": [
        "module.js",
        "i18n.js"
      ]
    }
  ]
}