JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://rawgit.com/masayuki0812/c3/master/c3.js"></script>
<link rel="stylesheet" href="https://rawgit.com/masayuki0812/c3/master/c3.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.5.0/d3.js"></script>
<div id="chart"></div>

JavaScript

var chart = c3.generate({
   data: {
                columns: [
                    ['data1', 30, 200, 100, 400, 150, 250],
                    ['data2', 130, 100, 140, 200, 150, 50]
                ],
                type: 'line',
                labels: {
                    format: {
                        y: d3.format("$,")
                        //y: function (v, id) { return "Custom Format: " + id; }
                    }
                }
            }
});