JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.bundle.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.min.js"></script>
<canvas id="myChart" width="400" height="400"></canvas>

JavaScript

var ctx = document.getElementById("myChart").getContext('2d');
var data_retorno = [  
   {  
      "labels":[  
         "January",
         "February",
         "March"
      ],
      "datasets":{  
         "label":"My First dataset",
         "fillColor":"rgba(220,220,220,0.2)",
         "strokeColor":"rgba(220,220,220,1)",
         "pointColor":"rgba(220,220,220,1)",
         "pointStrokeColor":"#fff",
         "pointHighlightFill":"#fff",
         "pointHighlightStroke":"rgba(220,220,220,1)",
         "data":[  
            "28",
            "48",
            "40"
         ]
      }
   }
];
data_retorno = data_retorno[0];
data_retorno.datasets = [].concat(data_retorno.datasets);

var myChart = new Chart(ctx, {
    type: 'line',
    data: data_retorno
});