In a similar way to how we ensure the validity of the Entity lifecycle, we can ensure that only a small number of component types are valid.

Create a check with the following attributes:

Field Input
Name Backstage Component type must be valid.
Description Only a small number of Component types are valid. service, website, library
Data source Entity Metadata (this is built-in).
Fact Type
Fact operator Is One Of
Value library,website,service,documentation