gridsome/app/polyfills.js

A JAMstack framework for building blazing fast websites with Vue.js

if (!Element.prototype.matches) {
  Element.prototype.matches = Element.prototype.msMatchesSelector ||
    Element.prototype.webkitMatchesSelector
}

if (!Element.prototype.closest) {
  Element.prototype.closest = function (s) {
    let el = this

    do {
      if (el.matches(s)) return el
      el = el.parentElement || el.parentNode
    } while (el !== null && el.nodeType === 1)
    return null
  }
}