在旧版浏览器中显示sankey

Question

I have problem with sorting sankey diagram in older version borwser - Chrome v49. My chart looks like this: sankey

How to present sankey on familiar design in older borwser? In jsfiddle in newer browser version charts looks correctly. I've implemented sorting function but it doesn't work in older browser. My jsfiddle

function sortData(fixedData) {
        return fixedData.sort((a, b) => b[2] - a[2]);
}

//const sortedData = sortData(fixedData);

const chart = Highcharts.chart('container', {

    title: {
        text: 'Highcharts Sankey Diagram'
    },

    series: [{
        keys: ['from', 'to', 'weight'],
        data: fixedData,
        type: 'sankey',
        name: 'Sankey demo series'
    }]
});

I'll be grateful for any solutions!

EDIT
So my script exactly look like this
Correctly works in OPERA v58 . Doesn't correctly works in CHROME v49

Answer 1

You need to sort your data by the sum of the values from the same name, not by individual values:

const fixedData = [
    ...
];

let sum;

fixedData.forEach(function(el1) {
    sum = 0;
    fixedData.forEach(function(el2) {
        if (el2[0] === el1[0]) {
            sum += el2[2]
        }
    });
    el1.push(sum);
});

function sortData(arr) {
    return [...arr].sort(function(b, a) {
        return b[3] - a[3]
    });
}

Live demo: http://jsfiddle.net/BlackLabel/td1ob0wg/