Examine source code of PluralChat

{
  "manifest_version": 3,
  "name": "PluralChat",
  "version": "2.5.2",
  "description": "Display PluralChat system and member information on Twitch.",
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://*.twitch.tv/*",
    "https://api.pluralchat.online/*",
    "https://api.qrserver.com/*",
    "https://api.betterttv.net/*",
    "https://cdn.betterttv.net/*",
    "https://api.frankerfacez.com/*",
    "https://cdn.frankerfacez.com/*",
    "https://7tv.io/*",
    "https://cdn.7tv.app/*",
    "https://api.ivr.fi/*",
    "https://api.7tv.app/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.twitch.tv/*"
      ],
      "exclude_matches": [
        "https://www.twitch.tv/*/about"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "author": "Kuro",
  "web_accessible_resources": [
    {
      "resources": [
        "emote-debug-bridge.js"
      ],
      "matches": [
        "https://*.twitch.tv/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "emote-background.js"
    ],
    "service_worker": "emote-background.js"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pluralchat@pluralchat.online",
      "strict_min_version": "109.0"
    }
  }
}