@gechiui/dom/build/dom/is-empty.js

DOM utilities module for GeChiUI.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = isEmpty;

/**
 * Recursively checks if an element is empty. An element is not empty if it
 * contains text or contains elements with attributes such as images.
 *
 * @param {Element} element The element to check.
 *
 * @return {boolean} Whether or not the element is empty.
 */
function isEmpty(element) {
  switch (element.nodeType) {
    case element.TEXT_NODE:
      // We cannot use \s since it includes special spaces which we want
      // to preserve.
      return /^[ \f\n\r\t\v\u00a0]*$/.test(element.nodeValue || '');

    case element.ELEMENT_NODE:
      if (element.hasAttributes()) {
        return false;
      } else if (!element.hasChildNodes()) {
        return true;
      }

      return (
        /** @type {Element[]} */
        Array.from(element.childNodes).every(isEmpty)
      );

    default:
      return true;
  }
}
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