CSV to 2D array javaescript

function csvToArray(csv, delimiter = ",", omitFirstRow = false) {
  console.log(csv.indexOf('\n'));
  return csv.slice(omitFirstRow ? csv.indexOf('\n')+1 : 0)
            .split("\n")
            .map((element) => element.split(delimiter));
}

let csv1 = "a,b\nc,d";
let csv2 = "a;b\nc;d";
let csv3 = "head1,head2\na,b\nc,d";

let result1 = csvToArray(csv1);
let result2 = csvToArray(csv2);
let result3 = csvToArray(csv3);

console.log(result1);
console.log(result2);
console.log(result3);

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