// https://w3c.github.io/geolocation/#geolocation_interface
[Exposed=Window]
interface Geolocation {
    undefined getCurrentPosition (
        PositionCallback successCallback,
        optional PositionErrorCallback? errorCallback = null,
        optional PositionOptions options = {},
    );

    long watchPosition (
        PositionCallback successCallback,
        optional PositionErrorCallback? errorCallback = null,
        optional PositionOptions options = {},
    );

    undefined clearWatch (long watchId);
};

// https://w3c.github.io/geolocation/#dom-positionoptions
dictionary PositionOptions {
    boolean enableHighAccuracy = false;
    [Clamp] unsigned long timeout = 0xFFFFFFFF;
    [Clamp] unsigned long maximumAge = 0;
};

callback PositionCallback = undefined (
    GeolocationPosition position);

callback PositionErrorCallback = undefined (
    GeolocationPositionError positionError);