developers.home-assistant/blog/2023-08-29-hass-format-state.md

author	authorURL	authorTwitter	title
Paul Bottein	https://github.com/piitaya	piitaya	Entity state formatting

In the Home Assistant Core 2023.9 release, we introduced 3 new methods to the hass object to allow entity state formatting with localization support for custom cards:

• hass.formatEntityState
• hass.formatEntityAttributeValue
• hass.formatEntityAttributeName

Example:

hass.formatEntityState(hass.states["cover.living_room_shutter"]); 
// It will return "Open" if the user language is English.
// It will return "Ouvert" if the user language is French.

For more details, refer to the entity state formatting documentation.