Examine source code of Shop Bud

{
  "manifest_version": 2,
  "name": "Shop Buddy",
  "version": "1.5.2",
  "description": "Allow you to set defaults for searching shops online.",
  "homepage_url": "https://protop.link",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "storage",
    "<all_urls>",
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "cookies"
  ],
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "shopbuddy2@protop"
    }
  },
  "browser_action": {
    "browser_style": true,
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_title": "Add Site"
  }
}