Examine source code of Fantasy Viewer by Elvis

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Fantasy Viewer by Elvis",
  "version": "2.5.15",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "{03cb81e4-e33d-4366-a099-320267590dc6}"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "nativeMessaging",
    "tabs",
    "webRequest"
  ],
  "host_permissions": [
    "*://*.fantasyland.ru/*"
  ],
  "icons": {
    "16": "img/FV16.png",
    "48": "img/FV48.png",
    "128": "img/FV128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.fantasyland.ru/*"
      ],
      "js": [
        "injects.js"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "armysmall.js",
        "calc.js",
        "cart.js",
        "chat.js",
        "clanitems.js",
        "combatlog.js",
        "countitemcraft.js",
        "dealset.js",
        "dressingroom.js",
        "effects.js",
        "enc.js",
        "exit.js",
        "forum.js",
        "market.js",
        "battle.js",
        "medals.js",
        "observer.js",
        "pb.js",
        "potion.js",
        "resizechat.js",
        "seq.js",
        "shop.js",
        "smile.js",
        "step.js",
        "tornaments.js",
        "up.js",
        "watchpl.js"
      ],
      "matches": [
        "*://*.fantasyland.ru/*"
      ]
    },
    {
      "resources": [
        "FV.js",
        "basedata.js",
        "script.js",
        "ad.js",
        "observer.js"
      ],
      "matches": [
        "*://*.fantasyland.ru/*"
      ]
    }
  ]
}