Examine source code of YesDomainScripts

{
  "manifest_version": 2,
  "name": "YesDomainScripts",
  "version": "4.4resigned1",
  "description": "Automatically blocks external scripts aka subdomain on all sites",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg",
    "128": "icons/icon.svg"
  },
  "applications": {
    "gecko": {
      "id": "yesdomainscripts202@example.org",
      "strict_min_version": "52.0"
    }
  },
  "browser_action": {
    "default_icon": "icons/icon.svg"
  },
  "permissions": [
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}