--description--

Given the first line of a comma-separated values (CSV) file, return an array containing the headings.

• The first line of a CSV file contains headings separated by commas.
• Remove any leading or trailing whitespace from each heading.

--hints--

getHeadings("name,age,city") should return ["name", "age", "city"].

assert.deepEqual(getHeadings("name,age,city"), ["name", "age", "city"]);

getHeadings("first name,last name,phone") should return ["first name", "last name", "phone"].

assert.deepEqual(getHeadings("first name,last name,phone"), ["first name", "last name", "phone"]);

getHeadings("username , email , signup date ") should return ["username", "email", "signup date"].

assert.deepEqual(getHeadings("username , email , signup date "), ["username", "email", "signup date"]);

--seed--

--seed-contents--

function getHeadings(csv) {

  return csv;
}

--solutions--

function getHeadings(csv) {
  return csv
    .split(",")
    .map(h => h.trim());
}