Removing “,” at the beginning of a line CSV

i want to convert a .csv file and write a new one. However I am not able to remove the first , i am kinda stuck here and it is driving me crazy. This is my code:

    var extractedtasks = tasks.slice(0, 3)
    var extractedtasksformated = extractedtasks.toString().replace(/,$/g, "n")

    let csvformat = "EMAIL,PASSWORD,MAILBOX"
    fs.writeFileSync(tasklocation[0], csvformat + "n" + extractedtasksformated.replace(/,^/g, 
    ""))
    console.log(chalk.green("Successfully updated the CSV file"))

That’s the output i am getting in the newly generated file

EMAIL,PASSWORD,MAILBOX
[e-mail],Password123,[e-mail]:password
,[e-mail],Password123,[e-mail]:password
,[e-mail],Password123,[e-mail]:password

Output extractedtasks:

[
  '[e-mail],Password123,[e-mail]:passwordr',
  '[e-mail],Password123,[e-mail]:passwordr',
  '[e-mail],Password123,[e-mail]:passwordr'
]

Output extractedtasksformated:

,[e-mail],Password123,[e-mail]:[e-mail]:password

Answer

Because extractedtasks is an array, instead of converting it to a string you should just join it with the expected separator:

extractedtasks = [
  '[e-mail],Password123,[e-mail]:passwordr',
  '[e-mail],Password123,[e-mail]:passwordr',
  '[e-mail],Password123,[e-mail]:passwordr'
]

extractedtasksJoined = extractedtasks.join("n")
// "[e-mail],Password123,[e-mail]:[e-mail]..."

// depending on the target line separator, you should also probably
// remove the "r"
extractedtasksJoined = extractedtasksJoined.replace("r", "")

// finally
fs.writeFileSync(tasklocation[0], csvformat + "n" + extractedtasksJoined + "n")