// https://w3c.github.io/pointerevents/#ref-for-dom-pointereventinit-1
dictionary PointerEventInit : MouseEventInit {
    long pointerId = 0;
    double width = 1;
    double height = 1;
    float pressure = 0;
    float tangentialPressure = 0;
    long tiltX;
    long tiltY;
    long twist = 0;
    double altitudeAngle;
    double azimuthAngle;
    DOMString pointerType = "";
    boolean isPrimary = false;
    long persistentDeviceId = 0;
    sequence<PointerEvent> coalescedEvents = [];
    sequence<PointerEvent> predictedEvents = [];
};

// https://w3c.github.io/pointerevents/#pointerevent-interface
[Exposed=Window]
interface PointerEvent : MouseEvent {
    constructor(DOMString type, optional PointerEventInit eventInitDict = {});
    readonly attribute long pointerId;
    readonly attribute double width;
    readonly attribute double height;
    readonly attribute float pressure;
    readonly attribute float tangentialPressure;
    readonly attribute long tiltX;
    readonly attribute long tiltY;
    readonly attribute long twist;
    readonly attribute double altitudeAngle;
    readonly attribute double azimuthAngle;
    readonly attribute DOMString pointerType;
    readonly attribute boolean isPrimary;
    readonly attribute long persistentDeviceId;
    [SecureContext] sequence<PointerEvent> getCoalescedEvents();
    sequence<PointerEvent> getPredictedEvents();
};
