core/intersection_observer/IntersectionObserverInit.idl

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// https://wicg.github.io/IntersectionObserver/#intersection-observer-init

dictionary IntersectionObserverInit {
    Element? root = null;
    DOMString rootMargin = "0px";
    (double or sequence<double>) threshold = 0;
};