class-hydrator/src/decorators/OnHydrate.ts

Transformation typescript class instance to stringifiable(serializable) plain object

export const OnHydrateMetadataKey = "ON_HYDRATE";
export class OnHydrateMetadata{
  constructor(public callback:(self?:any)=>any){ }
}

export function OnHydrate(callback:(self?:any)=>any){
  let newMetadata = new OnHydrateMetadata(callback);

  return Reflect.metadata(OnHydrateMetadataKey, newMetadata);
}