Examine source code of Find & Replace All

{
  "manifest_version" : 3 ,
  "name" : "Find & Replace All",
  "version" : "1.0.0",
  "description" : "Regex find & replace across all text on a page. Supports $1 substitutions, variables, and variables that evaluate JavaScript.",
  "permissions" : [
    "activeTab" ,
    "scripting" ,
    "storage" 
  ],
  "action" : {
    "default_popup" : "popup.html",
    "default_title" : "Find & Replace All",
    "default_icon" : {
      "16" : "icons/icon16.png",
      "48" : "icons/icon48.png",
      "128" : "icons/icon128.png"
    }
  },
  "icons" : {
    "16" : "icons/icon16.png",
    "48" : "icons/icon48.png",
    "128" : "icons/icon128.png"
  },
  "commands" : {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      },
      "description" : "Open Find & Replace All"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "find-replace-all@hisingh.dev",
      "strict_min_version": "115.0"
    }
  }
}