Chart.js Add Thousands Comma Separator to Axes Tick Value

// const nf = Intl.NumberFormat()new Chart(ctx, {  options: {    scales: {      scales: {        yAxes: [          {            ticks: {              userCallback(value, index, values) {                // return nf.format(value)                return value.toLocaleString()              }            }          }        ]      }    }  }})