Examine source code of Crunchyroll Party

{
  "manifest_version": 2,
  "name": "__MSG_name__",
  "description": "__MSG_description__",
  "default_locale": "en",
  "version": "1.0.1",
  "permissions": [
    "tabs",
    "webNavigation",
    "storage",
    "https://*.crunchyroll.com/*"
  ],
  "browser_action": {
    "default_icon": "128.png",
    "default_title": "__MSG_name__",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "16.png",
    "32": "32.png",
    "48": "48.png",
    "128": "128.png"
  },
  "web_accessible_resources": [
    "img/*.svg",
    "web/*",
    "contentScript.js",
    "content.js"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.joinparty.live/*"
      ],
      "js": [
        "join-room.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://*.crunchyroll.com/*",
        "http://*.crunchyroll.com/*"
      ],
      "js": [
        "contentScript.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "externally_connectable": {
    "matches": [
      "*://*.joinparty.live/*"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7c9f62ed-bd4d-48b3-9c60-3d692ad0a121}"
    }
  }
}