Examine source code of USB Audio Dropout Guard

{
  "manifest_version": 3,
  "name": "USB Audio Dropout Guard",
  "version": "1.0.2",
  "description": "Prevents USB headsets and DACs from losing Firefox audio after seeking, skipping, or buffering media.",
  "browser_specific_settings": {
    "gecko": {
      "id": "@usb-audio-dropout-guard",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "shared.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "shared.js",
        "content/seek-guard.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_origin_as_fallback": true
    }
  ],
  "action": {
    "default_title": "USB Audio Dropout Guard",
    "default_popup": "popup/popup.html",
    "default_icon": "icons/icon.svg"
  },
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  }
}