chromium/third_party/blink/renderer/core/resize_observer/resize_observer_size.idl

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// https://drafts.csswg.org/resize-observer-1/#resizeobserversize

[
    Exposed=Window
] interface ResizeObserverSize {
    readonly attribute unrestricted double inlineSize;
    readonly attribute unrestricted double blockSize;
};