Rethinking Geolocation in the modern world

gistfile1.txt

[NoInterfaceObject]
partial interface Navigator {
  readonly attribute Geolocation geolocation;
};

enum GeolocationErrorType {
  "permission denied",
  "position unavailable",
  "timeout"
};

[NoInterfaceObject]
interface GeolocationError : Error {
  readonly attribute GeolocationErrorType type;
};

[NoInterfaceObject]
interface Geolocation { 
  Promise<GeolocationEvent> getCurrentPosition();
  Promise startWatchingPosition();  // if resolve(), begins sending ongeoposition or ongeoerror events
  
  attribute boolean enableHighAccuracy = false;  // Does this actually do anything in practice?
  [Clamp] attribute unsigned long timeout = 0xFFFFFFFF;
  [Clamp] attribute unsigned long maximumAge = 0;
};

[NoInterfaceObject]
interface Coordinates {
  readonly attribute double latitude;
  readonly attribute double longitude;
  readonly attribute double? altitude;
  readonly attribute double accuracy;
  readonly attribute double? altitudeAccuracy;
  readonly attribute double? heading;
  readonly attribute double? speed;
};

[Constructor(DOMString type, optional GeolocationEventInit eventInitDict)]
interface GeolocationEvent : Event {
  readonly    attribute Coordinates coords;
  readonly    attribute DOMTimeStamp timestamp; // DOMHighResTimeStamp?
};

dictionary GeolocationEventInit {
  Coordinates     coords;
  DOMTimeStamp timestamp; // DOMHighResTimeStamp?
};