Examine source code of UI Sounds

{
  "name": "UI Sounds",
  "version": "1.1.3",
  "description": "Play sounds for important events in the browser, such as a page loading or a new tab being created.",
  "author": "Julian Fietkau",
  "manifest_version": 3,
  "icons": {
    "16": "icon_16.png",
    "32": "icon_32.png",
    "48": "icon_48.png",
    "64": "icon_64.png",
    "128": "icon_128.png",
    "256": "icon_256.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox_ui_sounds@fietkau.software",
      "strict_min_version": "115.0"
    }
  }
}