Examine source code of Stream Radio Hub

{
  "manifest_version": 2,
  "name": "Stream Radio Hub",
  "description": "Search the open radio-browser directory by name, tag or country, play stations straight from the toolbar, and see codec and bitrate before you tune in.",
  "version": "4.7.9",
  "browser_specific_settings": {
    "gecko": {
      "id": "{3c5b4d98-ff03-45c0-a1fa-987d2b4a0fd3}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_title": "Stream Radio Hub",
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png"
    }
  },
  "permissions": [
    "storage",
    "https://*.api.radio-browser.info/*"
  ],
  "background": {
    "scripts": [
      "src/core.js",
      "src/background.js"
    ],
    "persistent": true
  }
}