Examine source code of Share on Twitter

{
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.svg",
    "default_title": "Share on Twitter",
    "browser_style": true
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true,
    "open_in_tab": false
  },
  "description": "Easily share web pages and links on Twitter.",
  "homepage_url": "https://browsernative.com/twitter-share-firefox/",
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "manifest_version": 2,
  "name": "Share on Twitter",
  "version": "0.80.2",
  "permissions": [
    "activeTab",
    "menus"
  ]
}