heatmapInputGenerator.js

function heatmapInputGenerator (points, radius, max) {
  return `
    var heatmapInstance = h337.create({
      container: document.querySelector('.heatmap'),
      radius: ${radius}
    });
    heatmapInstance.setData({
      max: ${max},
      data: ${JSON.stringify(points)}
    });
  `;
}