csv stringify sync

csv_stringify_sync.js

 // from https://github.com/wdavidw/node-csv-stringify/blob/de22cdd8ffd07a02bd916e96a31678581eb33659/lib/index.js#L209
 function stringify(line) {
  var _line, column, columns, containsEscape, containsLinebreak, containsQuote, containsdelimiter, delimiter, escape, field, i, j, l, newLine, quote, ref, ref1, regexp, shouldQuote, value;
  if (typeof line !== 'object') {
    return line;
  }
  columns = null;
  if (typeof columns === 'object' && columns !== null && !Array.isArray(columns)) {
    columns = Object.keys(columns);
  }
  delimiter = ',';
  quote = '"';
  escape = '"';
  if (!Array.isArray(line)) {
    _line = [];
    if (columns) {
      for (i = j = 0, ref = columns.length; 0 <= ref ? j < ref : j > ref; i = 0 <= ref ? ++j : --j) {
        column = columns[i];
        value = get(line, column);
        _line[i] = typeof value === 'undefined' || value === null ? '' : value;
      }
    } else {
      for (column in line) {
        _line.push(line[column]);
      }
    }
    line = _line;
    _line = null;
  } else if (columns) {
    line.splice(columns.length);
  }
  if (Array.isArray(line)) {
    newLine = '';
    for (i = l = 0, ref1 = line.length; 0 <= ref1 ? l < ref1 : l > ref1; i = 0 <= ref1 ? ++l : --l) {
      field = line[i];
      if (typeof field === 'string') {

      } else if (typeof field === 'number') {
        field = '' + field;
      } else if (typeof field === 'boolean') {
        field = field ? '1' : '';
      } else if (field instanceof Date) {
        field = '' + field.getTime();
      } else if (typeof field === 'object' && field !== null) {
        field = JSON.stringify(field);
      }
      if (field) {
        containsdelimiter = field.indexOf(delimiter) >= 0;
        containsQuote = field.indexOf(quote) >= 0;
        containsEscape = field.indexOf(escape) >= 0 && (escape !== quote);
        containsLinebreak = field.indexOf('\r') >= 0 || field.indexOf('\n') >= 0;
        shouldQuote = containsQuote || containsdelimiter || containsLinebreak || false || (false && typeof line[i] === 'string');
        if (shouldQuote && containsEscape) {
          regexp = escape === '\\' ? new RegExp(escape + escape, 'g') : new RegExp(escape, 'g');
          field = field.replace(regexp, escape + escape);
        }
        if (containsQuote) {
          regexp = new RegExp(quote, 'g');
          field = field.replace(regexp, escape + quote);
        }
        if (shouldQuote) {
          field = quote + field + quote;
        }
        newLine += field;
      }
      if (i !== line.length - 1) {
        newLine += delimiter;
      }
    }
    line = newLine;
  }
  return line;
};