.withParams() does not serialize dates

[JeroenVinke]

https://gist.run/?id=50c90cd2a73b45026209c46a3b949bd1

import {inject} from 'aurelia-framework';
import {HttpClient} from 'aurelia-http-client';

@inject(HttpClient)
export class App {
  constructor(httpClient) {
    this.httpClient = httpClient;
  }

  attached() {
    let request = this.httpClient.createRequest('https://some.unexisting.domain.name.com')
    .asGet()
    .withParams({a: 'a', b: new Date()});

    request.send();
  }
}

The b parameter is lost, while the a parameter is sent:

[JeroenVinke]

Or should we just serialize the date before passing it to .withParams() ?

[EisenbergEffect]

Closing this since you should probably serialize the dates to format you desire before sending.