Examine source code of Script Patcher

{
  "manifest_version": 3,
  "name": "Script Patcher",
  "description": "Patch matched JavaScript files with sandboxed user-defined rules.",
  "version": "1.5.1",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "webRequestFilterResponse",
    "tabs",
    "storage"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "script-patcher@TH3-AZ.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "serviceWorker.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "assets/img/Logo.Icon.426.png",
    "24": "assets/img/Logo.Icon.426.png",
    "32": "assets/img/Logo.Icon.426.png",
    "48": "assets/img/Logo.Icon.426.png",
    "128": "assets/img/Logo.Icon.426.png"
  },
  "action": {
    "default_popup": "options.html",
    "default_icon": {
      "16": "assets/img/Logo.Icon.426.png",
      "24": "assets/img/Logo.Icon.426.png",
      "32": "assets/img/Logo.Icon.426.png",
      "48": "assets/img/Logo.Icon.426.png",
      "128": "assets/img/Logo.Icon.426.png"
    }
  }
}