Typescript async callbacks do not provide the correct types

The aysnc callbacks provided for typescript do not provide complete information for the objects being returned. Example:

  GetOwnInfo(): UserInfo;
  GetOwnInfo(callback: Function): JQueryXHR;

Both the Function and JQueryXHR do not provide type information about UserInfo.

The proposed fix is to have it generate the following:

  GetOwnInfo(): UserInfo;
  GetOwnInfo(callback: (data: UserInfo)=>void): JQueryPromise<UserInfo>;

I have submitted a pull request here: https://github.com/apache/thrift/pull/1310