/* eslint-disable eqeqeq */
/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */
export const getDOMRangeRect = (
  nativeSelection: Selection,
  rootElement: HTMLElement,
): DOMRect => {
  const domRange = nativeSelection.getRangeAt(0);

  let rect;

  if (nativeSelection.anchorNode === rootElement) {
    let inner = rootElement;
    while (inner.firstElementChild != null) {
      inner = inner.firstElementChild as HTMLElement;
    }
    rect = inner.getBoundingClientRect();
  } else {
    rect = domRange.getBoundingClientRect();
  }

  return rect;
};