convertCSV.js

const csv =  `transit_option,working_poor,working_nonpoor
Overall,20,20
Transit,60,40
Car,20,25
Bike,15,10
Walking,10,10`;

function convertCSVstring(csv){
  const lines = csv.split("\n");
  const result = [];
  const headers=lines[0].split(",");
  
  lines.forEach((d) => {
    const obj = {};
    const currentline = d.split(",");
    currentline.forEach((d, i) => {
      if ( !isNaN(currentline[i]) ){
        d = +currentline[i];
      } else {
        d = currentline[i];
      }
      obj[headers[i]] = d;
    })
    result.push(obj);
    return result;
  });
  result.shift();
  console.table(result);
}

const data = convertCSVstring(csv);
console.log(data);