如何在apexcharts热图中截断标签？

var options = {
  chart: {
    type: 'heatmap',
  },
  series: [{
    name: 'Sales',
    data: [
      { x: 'Category 1', y: 'Product A', value: 10 },
      { x: 'Category 1', y: 'Product B', value: 20 },
      { x: 'Category 2', y: 'Product C', value: 15 },
      // ...
    ]
  }],
  tooltip: {
    formatter: function (val, opts) {
      var label = opts.w.globals.labels[opts.dataPointIndex];
      if (label.length > 10) {
        label = label.substring(0, 10) + '...';
      }
      return label + ': ' + val;
    }
  }
};

var chart = new ApexCharts(document.querySelector("#chart"), options);
chart.render();