It is actually also a config option that can be passed to the setup function. Many of the modifiers actually just change the config value under the hood. All production formatters have timestamps by default, only pretty does not so it shouldn't be anything you need to worry about. You can also set timestamps globally in the setup function.
https://adzejs.com/getting-started/setup.html
https://adzejs.com/reference/configuration.html#user-configu...