code: function getQuoted (string) {
    if (!string.match(/"/g)) {
      return '"' + string + '"'
    }
    stringify = requireOnce('json-stringify-safe')
    return stringify(String(string))
  }
docs: quote a string
  Example:
  getQuoted('string')
  Output:
  '"string"'
  
  @param {string} string