You can deprecate a feature or a component once:

1. an alternative exists.
2. the support for the given functionality is scheduled for termination

The deprecated component should be marked as follows:

/**
 * @deprecated - This UI component will be removed in the next major release. This component is deprecated because <XY>.
 * For more information see [docs link](https://....)
 *
 * FixedHeightMessage - This component renders a single message.
 * It uses fixed height elements to make sure it works well in VirtualizedMessageList
 */

1. Deprecated component:
   1. does not receive an alternative -> update the documentation on how to implement the deprecated feature.
   2. receives an alternative -> update the documentation on how to use the introduced alternative solution.
2. Commit the changes under deprecate commit type, with commit description stating the reasons for deprecation.
3. Create an issue, so it can be scheduled for removal in foreseeable future. Tag the issue with the label breaking.