Create your entity models.
In a departure from classic @ngrx/entity models, each model in your application should be defined as a class (see note below). Here is an example of a Customer model:
Next we need to import the Key and Entity decorators. The Key decorator is used to specify the property in your model that is the unique identifier. Decorate the id property, which is the unique identifier for Customer model. Read more about entity keys in the advanced documentation.
The Entity decorator is used to attach metadata to your entity model that the NgRx Auto-Entity library can use to perform many of its automated tasks. In version 0.5 of the library, only the modelName must be specified. Read more about the entity decorator in the advanced documentation.
Note that the model must be a class and not an interface. This is because interfaces are a compile-time only feature of TypeScript, while classes are a native runtime construct in JavaScript. Further, the modelName must be defined on the entity, as this is the name that the library will use at runtime for minified/uglified code (critical, read more in advanced documentation.)