function _csvRowToArray(csv) {
    const csvRegex = /,(?=(?:(?:[^"]*"){2})*[^"]*$)/
    const trimQuotes = /^"|"$/g
    return csv.split(csvRegex).map(h => h.trim().replace(trimQuotes, ''))
}

function _csvRowToObject(headers, row) {
    let currentRow = _csvRowToArray(row)
    return Object.fromEntries(headers.map((header, i) => [header, currentRow[i]]))
}

function csvToJSON(csv) {
    const [headersRow, ...rows] = csv.split('\n')
    let headers = _csvRowToArray(headersRow)
    return rows.map(row => _csvRowToObject(headers, row))
}

let csv = `Name, Age, City
John, 21, New York
"Jane, Doe", 22, San Francisco
Jim, 23, Chicago
"Jill Chill", 24, "Tacoma, Seattle"`

console.log(csvToJSON(csv))