Not sure why I had to register CategoryScale etc.

[TWDBrob]

I am creating a chart like this

	const getServiceChartData = () =>
		servicesReport['report-data'][0]
			.filter((dataSet: { resourceURI: string; data: number[] }) =>
				isServiceSelected(dataSet.resourceURI)
			)
			.map((dataSet: { resourceURI: string; data: number[] }) => {
				return {
					data: dataSet.data,
					label: prettyServiceName(dataSet.resourceURI),
					borderWidth: 1
				};
			});
...

		const config: ChartConfiguration = {
			type: 'line',
			data: {
				labels,
				datasets: getServiceChartData()
			},
			options: {
				scales: {
					x: {
						title: {
							display: true,
							text: 'Date'
						}
					},
					y: {
						title: {
							display: true,
							text: 'Number of Service Requests'
						}
					}
				},
				plugins: {
					legend: {
						position: 'right'
					}
				},
				responsive: false
			}
		};

I was then invoking new Chart(canvas, config) and kept getting error until I added the following line:

Chart.register(CategoryScale, LinearScale, LineController, PointElement, LineElement);

I am not clear on what I did to require that. AFAIK, it's not generally required (it's not in the Getting Started section of the docs, anyway). Does anyone see what I might have left out?

Thanks