how to make unclicable legend chartjs

1        let chart = new Chart(elem.find('canvas')[0], {
2                type: 'line',
3                data: {
4                    labels: [],
5                    datasets: []
6                },
7                options: {
8                    responsive: true,
9                    maintainAspectRatio: false,
10                    legend: {
11                        onClick: (e) => e.stopPropagation()
12                    }
13                }
14            });
15