Using canvas as content

const config = { type: 'line', data, options: { scales: { y: { beginAtZero: true, } }, plugins: { annotation: { annotations: { annotation1, annotation2 } } } } };

const config = {
  type: 'line',
  data,
  options: {
    scales: {
      y: {
        beginAtZero: true,
      }
    },
    plugins: {
      annotation: {
        annotations: {
          annotation1,
          annotation2
        }
      }
    }
  }
};

const annotation1 = { type: 'label', content: Utils.getHouse(), xValue: 9, yValue: 30 };

const annotation1 = {
  type: 'label',
  content: Utils.getHouse(),
  xValue: 9,
  yValue: 30
};

const annotation2 = { type: 'label', content: Utils.getSpiral(), xValue: 2, yValue: 50 };

const annotation2 = {
  type: 'label',
  content: Utils.getSpiral(),
  xValue: 2,
  yValue: 50
};

const DATA_COUNT = 12; const MIN = 0; const MAX = 100; const numberCfg = {count: DATA_COUNT, min: MIN, max: MAX}; const data = { labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'], datasets: [{ data: Utils.numbers(numberCfg) }] };

const DATA_COUNT = 12;
const MIN = 0;
const MAX = 100;
const numberCfg = {count: DATA_COUNT, min: MIN, max: MAX};
const data = {
  labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
  datasets: [{
    data: Utils.numbers(numberCfg)
  }]
};