[typescript-angular] Support custom types (serialization/deserialization/imports) (momentjs)

Hi,

I would like to be able to support custom types. This would mean:

• Parameters in services are serialized from the custom type
• Members of models are serialized/deserialized on receive/send.
• Imports for the custom types are included where required.

My concrete case is that I want to use momentjs for date/time types in models and as parameters.

What I tried to do was:

• Use a typemapping from Date to Moment; This works but only for Models (See #926)
• Add an import mapping for Moment; This did not work.

But even then there seems to be no support for any kind pluggable serialization/deserialization. Maybe this could be achieved using custom providers? Maybe this is something to consider for #802.

I can imagine this is quite a common use case but could not find much about how to handle this.

My question is basically how would I achieve having working generated code where every date formatted string is replaced with a Moment type (Other than just writing my own templates).

Thanks

Start with the typescript-angular generator and review the existing typemapping and import-mapping behavior described in the issue. Compare that with the custom providers and template-based approaches mentioned, then define how generated model members and service parameters should serialize, deserialize, and import custom types. Done means a custom type such as Moment works consistently in generated code without maintaining custom templates.