Examine source code of Chollometro

{
  "manifest_version": 2,
  "name": "Chollometro: Info de precios, alertas y más",
  "version": "1.3.11",
  "description": "Chollometro: Info de precios, alertas y más",
  "icons": {
    "48": "icons/icon.png",
    "128": "icons/128.png"
  },
  "background": {
    "persistent": true,
    "page": "background.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "alarms",
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "src/popup/popup.html"
  },
  "web_accessible_resources": [
    "*.js.map",
    "assets/App-60a083dd.css",
    "assets/App.view-72ce2738.js",
    "assets/Button-722c01db.js",
    "assets/Button-cc42555c.css",
    "assets/PriceTrackNotifications-5f09b9f7.css",
    "assets/PriceTrackNotifications.view-9d1536a1.js",
    "assets/analytics.saga-59893f2a.js",
    "assets/api.connect-60241fd4.js",
    "assets/chollo_logo_dark.datauri-21aa96e6.js",
    "assets/chollo_logo_dark.datauri-dac0bd6b.svg",
    "assets/chollo_logo_white.datauri-0c687d26.svg",
    "assets/extension.api-39dc92ee.js",
    "assets/index-1e4bf09d.css",
    "assets/index-9d4612ca.js",
    "assets/index-dc47b67b.js",
    "assets/index.serp-8ee11ddd.css",
    "assets/logo-38cf31ca.svg",
    "assets/metricsAlerts.api-4655f648.js",
    "assets/metricsInstall.api-ed419b75.js",
    "assets/metricsSerp.api-1a887ce7.js",
    "assets/metricsSerpChollo.api-033b3192.js",
    "assets/offer.api-5a85821a.js",
    "assets/serp.black.inline-05ec2bc5.svg",
    "assets/serp.white.inline-03aaa736.svg",
    "assets/similar.api-16e2e8ea.js",
    "assets/src/serp/index.serp-3592ff58.js",
    "assets/src/ui/index-4ba10410.js",
    "assets/urlAccess-236f4eff.js",
    "assets/voucher.api-36814764.js",
    "src/ui/assets/pages/privacyConsent.html",
    "src/ui/assets/pages/privatePolicy.html"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/search?*",
        "https://www.google.es/search?*"
      ],
      "js": [
        "src/serp/index.serp.js"
      ]
    },
    {
      "exclude_matches": [
        "*://carrefour.es/access/*",
        "*://*.carrefour.es/access/*",
        "https://www.google.com/search?*",
        "https://www.google.es/search?*"
      ],
      "matches": [
        "*://*/*"
      ],
      "js": [
        "src/ui/index.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tech@chollometro.com",
      "strict_min_version": "58.0"
    }
  }
}