Examine source code of Minimal Twitch

{
  "manifest_version": 2,
  "name": "Minimal Twitch",
  "version": "6.3.16",
  "description": "Ad blocker, black background, no clutter, 7TV + BTTV + FFZ emotes — your Twitch, your way.",
  "browser_specific_settings": {
    "gecko": {
      "id": "twitch-plus@extension",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Twitch+ Settings",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "storage",
    "clipboardWrite",
    "*://7tv.io/*",
    "*://cdn.7tv.app/*",
    "*://api.betterttv.net/*",
    "*://cdn.betterttv.net/*",
    "*://api.frankerfacez.com/*",
    "*://cdn.frankerfacez.com/*",
    "*://gql.twitch.tv/*",
    "*://usher.ttvnw.net/*"
  ],
  "web_accessible_resources": [
    "vaft-page.js",
    "minimal-page.js",
    "chat-bypass.js"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "js": [
        "hide-first.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "css": [
        "twitch-black.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "js": [
        "vaft-inject.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "js": [
        "hide-elements.js",
        "7tv-emotes.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.twitch.tv/*"
      ],
      "js": [
        "chat-inject.js"
      ],
      "run_at": "document_idle"
    }
  ]
}