Examine source code of BetterBetterGG

{
  "manifest_version": 2,
  "name": "BetterBetterGG",
  "description": "An unofficial extension that adds multiple features to vaush.gg and other Whitele.af sites",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "*://*.vaush.gg/*",
    "*://*.demonmama.com/*"
  ],
  "icons": {
    "48": "48.png",
    "128": "128.png"
  },
  "version": "3.4",
  "web_accessible_resources": [
    "script.js",
    "xhook.js",
    "script_dm.js",
    "xhook_dm.js",
    "scriptnew.js",
    "xhooknew.js"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.vaush.gg/chat/static/*"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "js": [
        "xhook.js",
        "script.js"
      ]
    },
    {
      "matches": [
        "https://*.vaush.gg/chat/static/*"
      ],
      "run_at": "document_end",
      "all_frames": true,
      "css": [
        "emotes.css"
      ]
    },
    {
      "matches": [
        "https://*.demonmama.com/chat/static/*"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "js": [
        "xhook_dm.js",
        "script_dm.js"
      ]
    },
    {
      "matches": [
        "https://*.demonmama.com/chat/static/*"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "css": [
        "dm.css"
      ]
    },
    {
      "matches": [
        "https://*.vaush.gg/for/chat/*"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "js": [
        "xhooknew.js",
        "scriptnew.js"
      ]
    },
    {
      "matches": [
        "https://*.vaush.gg/for/chat/*"
      ],
      "run_at": "document_end",
      "all_frames": true,
      "css": [
        "emotes.css"
      ]
    }
  ],
  "externally_connectable": {
    "matches": [
      "*://*.vaush.gg/*",
      "*://*.demonmama.com/*"
    ]
  },
  "options_page": "settings.html"
}