Examine source code of Costbot Price Tracker

{
  "icons": {
    "16": "icon16.plasmo.7aaa9e75.png",
    "32": "icon32.plasmo.f62f311a.png",
    "48": "icon48.plasmo.bd144f95.png",
    "64": "icon64.plasmo.69efc4ae.png",
    "128": "icon128.plasmo.8f3d2394.png"
  },
  "manifest_version": 2,
  "browser_action": {
    "default_icon": {
      "16": "icon16.plasmo.7aaa9e75.png",
      "32": "icon32.plasmo.f62f311a.png",
      "48": "icon48.plasmo.bd144f95.png",
      "64": "icon64.plasmo.69efc4ae.png",
      "128": "icon128.plasmo.8f3d2394.png"
    },
    "default_popup": "popup.html"
  },
  "version": "0.0.6",
  "author": "Mark Tielens Thomas",
  "name": "Costbot Price Tracker",
  "description": "Easily view historical pricing data from costbot.net. Get free price alerts when the price drops and save money!",
  "background": {
    "scripts": [
      "background.ea3d3019.js"
    ]
  },
  "permissions": [
    "storage",
    "activeTab",
    "https://*.amazon.com/*",
    "https://*.backcountry.com/*",
    "https://*.bestbuy.com/*",
    "https://*.chewy.com/*",
    "https://*.ebay.com/*",
    "https://*.etsy.com/*",
    "https://*.homedepot.com/*",
    "https://*.newegg.com/*",
    "https://*.rei.com/*",
    "https://*.target.com/*",
    "https://*.walmart.com/*",
    "https://*.wayfair.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.amazon.com/*",
        "https://*.backcountry.com/*",
        "https://*.bestbuy.com/*",
        "https://*.chewy.com/*",
        "https://*.ebay.com/*",
        "https://*.etsy.com/*",
        "https://*.homedepot.com/*",
        "https://*.newegg.com/*",
        "https://*.rei.com/*",
        "https://*.target.com/*",
        "https://*.walmart.com/*",
        "https://*.wayfair.com/*"
      ],
      "js": [
        "content.cba98227.js"
      ],
      "css": []
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d77fe5f6-024a-4be7-85bb-a67833436af1}"
    }
  }
}