Examine source code of All-Chat Extension

{
  "manifest_version": 3,
  "name": "All-Chat Extension",
  "version": "1.7.0",
  "description": "Replace native platform chat with unified All-Chat experience",
  "browser_specific_settings": {
    "gecko": {
      "id": "allchat@allch.at",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "identity",
    "alarms"
  ],
  "host_permissions": [
    "https://www.twitch.tv/*",
    "https://www.youtube.com/*",
    "https://studio.youtube.com/*",
    "https://kick.com/*",
    "https://allch.at/*"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.twitch.tv/*"
      ],
      "js": [
        "content-scripts/twitch.js"
      ],
      "css": [
        "content-scripts/styles.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://www.youtube.com/watch*",
        "https://www.youtube.com/live/*",
        "https://www.youtube.com/live_chat*"
      ],
      "js": [
        "content-scripts/youtube.js"
      ],
      "css": [
        "content-scripts/styles.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://kick.com/*"
      ],
      "js": [
        "content-scripts/kick.js"
      ],
      "css": [
        "content-scripts/styles.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://studio.youtube.com/video/*/livestreaming*"
      ],
      "js": [
        "content-scripts/youtube-studio.js"
      ],
      "css": [
        "content-scripts/styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "ui/chat-container.html",
        "ui/chat-bundle.js",
        "ui/chat-styles.css",
        "assets/*"
      ],
      "matches": [
        "https://www.twitch.tv/*",
        "https://www.youtube.com/*",
        "https://studio.youtube.com/*",
        "https://kick.com/*"
      ]
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png",
      "48": "assets/icon-48.png",
      "128": "assets/icon-128.png"
    }
  },
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; style-src 'self' 'unsafe-inline'; connect-src 'self' https://allch.at wss://allch.at https://7tv.io https://api.frankerfacez.com https://api.betterttv.net"
  }
}