TypeError: table.map is not a function

I am simply trying to fetch data from a CSV file where I have to loop over an array of objects. But the loop is not happening and its throwing that array.map or array.forEach is not a function. The HTML file:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/chart.min.js"></script>
</head>
<body>
    <canvas id="chart" width="400" height="400">

    </canvas>
    <script>
 
        fetchData();
        async function fetchData(){
          try {
            const data = await fetch('http://localhost:3000/');
            const table = await data.text();
            console.log(table);
            table.map(item => {
                console.log(item["Year"])
            });
            
          } catch (error) {
              console.error(error);
          }

        }
    </script>
</body>
</html>

The backend node.js file:

const express = require('express');
var app = express();
const cors = require('cors')
var fs = require('fs').promises;
var parse = require('csv-parse/lib/sync');
app.get('/',cors(), async (req, res) => {
  (async function () {
    const fileContent = await fs.readFile('test.csv');
    const records = parse(fileContent,{columns:true});
    res.send(records);
})();
});
app.listen('3000',() => console.log('listening on 3000'));

The fetched data looks like this: [{"Year":"1880","Glob":"-.16","NHem":"-.27","SHem":"-.04","24N-90N":"-.35","24S-24N":"-.13","90S-24S":"-.01","64N-90N":"-.81","44N-64N":"-.46","24N-44N":"-.26","EQU-24N":"-.15","24S-EQU":"-.10","44S-24S":"-.03","64S-44S":".05","90S-64S":".65"},{"Year":"1881","Glob":"-.08","NHem":"-.17","SHem":".01","24N-90N":"-.33","24S-24N":".10","90S-24S":"-.06","64N-90N":"-.92","44N-64N":"-.43","24N-44N":"-.18","EQU-24N":".10","24S-EQU":".11","44S-24S":"-.05","64S-44S":"-.07","90S-64S":".58"},{"Year":"1882","Glob":"-.10","NHem":"-.20","SHem":"-.01","24N-90N":"-.29","24S-24N":"-.05","90S-24S":".02","64N-90N":"-1.42","44N-64N":"-.25","24N-44N":"-.12","EQU-24N":"-.05","24S-EQU":"-.05","44S-24S":".02","64S-44S":".04","90S-64S":".61"},.....(more objects)]

Solution

Can you try JSON.parse(table).map(... . From the error it looks like table is not of type array.