title: chartjs + Angular6 is not showing charts or any error
body: <p>I m trying to implement chart.js in angular, have written a simple code to display chart on html, but there is not output on the page, also there are no errors. I m not getting where is the issue and why displaying chart is getting failed.
  <a href="https://stackblitz.com/edit/angularchartjs" rel="noreferrer">slackblitz</a> url for reference</p>
  
  <p>Code that I m trying in component:</p>
  
  <pre><code>this.chart1 = new Chart('canvas', {
        type: 'doughnut',
        data: {
          labels: ['solid', 'liquid', 'unknown'],
          datasets: [
            {
              label: 'test',
              data: [
                100, 200, 300
              ],
              backgroundColor: ['#0074D9', '#2ECC40', '#FF4136']
            }
          ]
        },
        options: {
          title: {
            display: false,
            text: 'Color test'
          },
          legend: {
            position: 'left',
            display: true,
            fullWidth: true,
            labels: {
              fontSize: 11
            }
          },
          scales: {
            xAxes: [{
              display: true
            }],
            yAxes: [{
              display: true
            }]
          }
        }
      });
  </code></pre>
  
  <p>Please help me to understand where I m getting failed, Thanks</p>