Unexpected type hint required for Date member

It seems from the tests that members of Date type should be automatically deserialized without type hint. However, it didn’t deserialize as Date but Object which turns out be something like

new Object('2016-07-29')

Without type hint: deserialize as object

@JsonObject
export class Team {
  @JsonMember
  public createdAt: Date;
}

let json = { createdAt: '2016-07-29' };
let str = JSON.stringify(json);
TypedJSON.parse(str, Team);

With type hint: deserialize as Date

@JsonObject
export class Team {
  @JsonMember({ type: Date })
  public createdAt: Date;
}

[JohnWeisz]

I decided on removing the warning for now, as it is likely that upon encountering a TypeError during deserialization a user would first check their @JsonMember declaration.

[JohnWeisz]

@timfish However, constraining the generic type to a base-class should work, if the possible sub-types are also specified through the knownTypes setting.