Examine source code of Banggood Good Search

{
  "manifest_version": 2,
  "name": "Banggood Good Search",
  "description": "Filter products for keyword and availability at Banggood.",
  "short_name": "GoodSearch",
  "version": "0.1",
  "author": "Fabio Mereu",
  "homepage_url": "https://github.com/medenagan/good-search",
  "permissions": [
    "storage",
    "tabs"
  ],
  "icons": {
    "16": "assets/icons/icon-16.png",
    "32": "assets/icons/icon-32.png",
    "48": "assets/icons/icon-48.png",
    "128": "assets/icons/icon-128.png"
  },
  "browser_action": {
    "default_popup": "pages/side.html",
    "default_icon": {
      "16": "assets/icons/icon-16.png",
      "32": "assets/icons/icon-32.png",
      "48": "assets/icons/icon-48.png",
      "128": "assets/icons/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.banggood.com/*",
        "https://*.banggood.in/*"
      ],
      "css": [
        "style/merchant.css"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "lib/lz-string.js",
        "utils/persistent.js",
        "utils/filter.js",
        "content/banggood/api.js",
        "content/banggood/dom.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "background/reload.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "goodsearch@mereu.info"
    }
  }
}