Examine source code of PalletTrade Pro

{
  "manifest_version": 2,
  "name": "PalletTrade Pro",
  "version": "1.0.55",
  "description": "See real market prices on eBay. PalletTrade shows deal scores, recent sales & price history for raw, graded & sealed Pokemon cards.",
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "notifications",
    "alarms",
    "contextMenus",
    "*://*.ebay.com/*",
    "*://*.ebay.de/*",
    "*://*.ebay.co.uk/*",
    "*://*.ebay.fr/*",
    "*://*.ebay.it/*",
    "*://*.ebay.es/*",
    "*://*.ebay.nl/*",
    "*://*.ebay.at/*",
    "*://*.ebay.be/*",
    "*://*.mercari.com/*",
    "*://*.fanaticscollect.com/*",
    "*://*.rarecandy.com/*",
    "*://*.comc.com/*",
    "*://*.whatnot.com/*",
    "https://pallet.trade/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.ebay.com/sch/*",
        "*://*.ebay.de/sch/*",
        "*://*.ebay.co.uk/sch/*",
        "*://*.ebay.fr/sch/*",
        "*://*.ebay.it/sch/*",
        "*://*.ebay.es/sch/*",
        "*://*.ebay.nl/sch/*",
        "*://*.ebay.at/sch/*",
        "*://*.ebay.be/sch/*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content/shared.js",
        "content/search.js"
      ],
      "css": [
        "styles/badges.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.ebay.com/itm/*",
        "*://*.ebay.de/itm/*",
        "*://*.ebay.co.uk/itm/*",
        "*://*.ebay.fr/itm/*",
        "*://*.ebay.it/itm/*",
        "*://*.ebay.es/itm/*",
        "*://*.ebay.nl/itm/*",
        "*://*.ebay.at/itm/*",
        "*://*.ebay.be/itm/*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content/shared.js",
        "content/listing.js"
      ],
      "css": [
        "styles/flyout.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.mercari.com/*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content/shared.js",
        "content/mercari-listing.js",
        "content/mercari-search.js"
      ],
      "css": [
        "styles/flyout.css",
        "styles/badges.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.fanaticscollect.com/*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content/shared.js",
        "content/fanatics-listing.js",
        "content/fanatics-search.js"
      ],
      "css": [
        "styles/flyout.css",
        "styles/badges.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.rarecandy.com/*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content/shared.js",
        "content/rarecandy-listing.js",
        "content/rarecandy-search.js"
      ],
      "css": [
        "styles/flyout.css",
        "styles/badges.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.comc.com/Cards/Pokemon*",
        "*://www.comc.com/Players/Pokemon*",
        "*://www.comc.com/Teams/Pokemon*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content/shared.js",
        "content/comc-listing.js",
        "content/comc-search.js"
      ],
      "css": [
        "styles/flyout.css",
        "styles/badges.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.whatnot.com/*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content/shared.js",
        "content/whatnot-listing.js"
      ],
      "css": [
        "styles/flyout.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    "icons/icon16.png",
    "icons/icon48.png",
    "icons/icon128.png",
    "lib/browser-polyfill.js",
    "content/shared.js",
    "content/image-identify.js",
    "styles/flyout.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "pallet@pallet.trade",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}