@mui/x-date-pickers/modern/internals/utils/utils.js

The community edition of the Date and Time Picker components (MUI X).

/* Use it instead of .includes method for IE support */
export function arrayIncludes(array, itemOrItems) {
  if (Array.isArray(itemOrItems)) {
    return itemOrItems.every(item => array.indexOf(item) !== -1);
  }
  return array.indexOf(itemOrItems) !== -1;
}
export const onSpaceOrEnter = (innerFn, externalEvent) => event => {
  if (event.key === 'Enter' || event.key === ' ') {
    innerFn(event);

    // prevent any side effects
    event.preventDefault();
    event.stopPropagation();
  }
  if (externalEvent) {
    externalEvent(event);
  }
};
export const executeInTheNextEventLoopTick = fn => {
  setTimeout(fn, 0);
};

// https://www.abeautifulsite.net/posts/finding-the-active-element-in-a-shadow-root/
export const getActiveElement = (root = document) => {
  const activeEl = root.activeElement;
  if (!activeEl) {
    return null;
  }
  if (activeEl.shadowRoot) {
    return getActiveElement(activeEl.shadowRoot);
  }
  return activeEl;
};

/**
 * Gets the index of the focused list item in a given ul list element.
 *
 * @param {HTMLUListElement} listElement - The list element to search within.
 * @returns {number} The index of the focused list item, or -1 if none is focused.
 */
export const getFocusedListItemIndex = listElement => {
  const children = Array.from(listElement.children);
  return children.indexOf(getActiveElement(document));
};
export const DEFAULT_DESKTOP_MODE_MEDIA_QUERY = '@media (pointer: fine)';