Sourcecode to update chartjs 3.x

[FelipeWielewski]

Codebase for update plugin to chartjs 3.x

function checkIsEmpty(chart) {
    if (chart.config.type == "doughnut") {
        var values = chart.data.datasets[0].data;
        if (values.length == 0) {
            return true;
        }

        for (i = 0; i < values.length; i++) {
            if (values[i] != 0) {
                return false;
            }
        }

        return true;
    }

    return chart.data.datasets[0] == null || chart.data.datasets[0].data.length === 0;
}
Chart.register({
    id: 'overlay',
    afterDraw: (chart, args, opts) => {
        if (checkIsEmpty(chart)) {
            var ctx = chart.ctx;
            ctx.save();
            ctx.textAlign = 'center';
            ctx.textBaseline = 'middle';
            ctx.font = "22px Arial";
            ctx.fillStyle = "gray";
            ctx.fillText('Sem dados', chart.width / 2, chart.height / 2);

            ctx.fillStyle = "rgba(0, 0, 0, 0.05)";
            ctx.fillRect(0, 0, chart.width, chart.height);
            ctx.restore();
        }
    }
});

I create this source code, inspired into plugin.