code: function peekTokenNoLineTerminator() {
    var t = peekToken();
    var start = lastToken.location.end.offset;
    var end = t.location.start.offset;
    for (var i = start; i < end; i++) {
      var code = input.charCodeAt(i);
      if (isLineTerminator(code))
        return null;
  
      // If we have a block comment we need to skip it since new lines inside
      // the comment are not significant.
      if (code === 47) {  // '/'
        code = input.charCodeAt(++i);
        // End of line comments always mean a new line is present.
        if (code === 47)  // '/'
          return null;
        i = input.indexOf('*/', i) + 2;
      }
    }
    return t;
  }
docs: Peeks the next token ensuring that there is no line terminator before it.
  This is done by checking the preceding characters for new lines.
  @return {Token} This returns null if no token is found before the next
  line terminator.