Examine source code of Cool Search

{
  "manifest_version": 2,
  "name": "Cool Search",
  "version": "1.3.5",
  "description": "A content filter that removes unwanted elements while browsing",
  "browser_specific_settings": {
    "gecko": {
      "id": "coolsearch@atwooddigital.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "declarativeNetRequest",
    "scripting",
    "https://www.google.com/*",
    "https://*/*",
    "http://*/*",
    "https://*.workers.dev/*",
    "https://api.stripe.com/*"
  ],
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Cool Search",
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "popup_block_rules",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/search*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "exclude_matches": [
        "https://www.google.com/search*"
      ],
      "js": [
        "content-web.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "preview.js",
    "icon16.png",
    "icon32.png",
    "icon48.png",
    "icon128.png"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'"
}