Examine source code of StreamRec

{
  "manifest_version": 2,
  "name": "StreamRec",
  "version": "1.0.9",
  "description": "Record live streams from MediaSource (MSE) based websites. Saves video directly from the browser without screen capture.",
  "browser_specific_settings": {
    "gecko": {
      "id": "streamrec@downloader.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon48.png"
    },
    "default_title": "StreamRec"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "downloads",
    "nativeMessaging"
  ],
  "web_accessible_resources": [
    "page_script.js",
    "plugins/analyzer.js",
    "plugins/hls_base.js",
    "plugins/hls_multi.js"
  ]
}