Grouped stacked bar

import WestCoastCharts from 'west-coast-charts'

const options = {
  chart: {
    height: 380,
    fontFamily: "Inter, Geist, \"IBM Plex Sans\", system-ui, sans-serif",
    type: "bar",
    stacked: true,
    toolbar: {
      show: false
    }
  },
  series: [
    {
      name: "Online · New",
      group: "online",
      data: [27, 29, 30, 13]
    },
    {
      name: "Online · Returning",
      group: "online",
      data: [28, 19, 18, 29]
    },
    {
      name: "Store · New",
      group: "store",
      data: [18, 8, 17, 13]
    },
    {
      name: "Store · Returning",
      group: "store",
      data: [19, 25, 25, 13]
    }
  ],
  colors: ["#2563eb", "#93c5fd", "#d97706", "#fcd34d"],
  xaxis: {
    categories: ["Q1", "Q2", "Q3", "Q4"]
  },
  plotOptions: {
    bar: {
      horizontal: true,
      barHeight: "70%"
    }
  },
  dataLabels: {
    enabled: false
  },
  title: {
    text: "Customers by channel (k)"
  },
  theme: {
    mode: "light",
    preset: "coastal"
  }
}

const chart = new WestCoastCharts(document.querySelector('#chart'), options)
await chart.render()