Chartjs-Chart.js zoom shows decimal points

From https://github.com/chartjs/chartjs-plugin-zoom/issues/220#issuecomment-507543826

options: {
  scales: {
    yAxes: [{
      ticks: {
        callback: function(value) {
          if (Math.floor(value) === value) {
            return value
          }
        }
      }
     }]
   }
}