@glidejs/glide/src/utils/dom.js

Glide.js is a dependency-free JavaScript ES6 slider and carousel. It’s lightweight, flexible and fast. Designed to slide. No less, no more

/**
 * Finds siblings nodes of the passed node.
 *
 * @param  {Element} node
 * @return {Array}
 */
export function siblings (node) {
  if (node && node.parentNode) {
    let n = node.parentNode.firstChild
    let matched = []

    for (; n; n = n.nextSibling) {
      if (n.nodeType === 1 && n !== node) {
        matched.push(n)
      }
    }

    return matched
  }

  return []
}

/**
 * Checks if passed node exist and is a valid element.
 *
 * @param  {Element} node
 * @return {Boolean}
 */
export function exist (node) {
  if (node && node instanceof window.HTMLElement) {
    return true
  }

  return false
}