Examine source code of http-request-logger

{
  "description": "Logs URLs of HTTP request to a dedicated tab",
  "manifest_version": 2,
  "name": "http-request-logger",
  "version": "1.1",
  "homepage_url": "https://github.com/mdn/webextensions-examples/tree/master/http-response",
  "icons": {
    "48": "icons/pen.svg"
  },
  "permissions": [
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "notifications",
    "https://agorov.ddns.net/*",
    "<all_urls>"
  ],
  "sidebar_action": {
    "default_icon": "icons/star.png",
    "default_title": "LogTab",
    "default_panel": "sidebar/panel.html"
  },
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      }
    }
  }
}