Examine source code of browser-tab-reloader

{
  "name": "browser-tab-reloader-browser-extension",
  "version": "1.0.0",
  "manifest_version": 2,
  "icons": {
    "16": "icon/16-off.png",
    "32": "icon/32-off.png",
    "48": "icon/48-off.png",
    "96": "icon/96-off.png",
    "128": "icon/128-off.png"
  },
  "browser_action": {
    "default_popup": "src/popup.html"
  },
  "options_ui": {
    "page": "src/options.html"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "storage",
    "<all_urls>",
    "scripting"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1fda2e54-b7bb-405a-9282-3ade976c1601}"
    }
  }
}