text: function S4() {
    return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1)
  }
  
  function uuid() {
    return `${S4() + S4()}-${S4()}-4${S4().substr(
      0,
      3
    )}-${S4()}-${S4()}${S4()}${S4()}`.toLowerCase()
  }
  
  export default uuid
  