text: var createError = require('http-errors');
  var express = require('express');
  var path = require('path');
  var cookieParser = require('cookie-parser');
  var logger = require('morgan');
  
  var indexRouter = require('./routes/index');
  var usersRouter = require('./routes/users');
  
  var app = express();
  
  // view engine setup
  app.set('views', path.join(__dirname, 'views'));
  app.set('view engine', 'pug');
  
  app.use(logger('dev'));
  app.use(express.json());
  app.use(express.urlencoded({ extended: false }));
  app.use(cookieParser());
  app.use(express.static(path.join(__dirname, 'public')));
  
  app.use('/', indexRouter);
  app.use('/users', usersRouter);
  
  // catch 404 and forward to error handler
  app.use(function(req, res, next) {
    next(createError(404));
  });
  
  // error handler
  app.use(function(err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};
  
    // render the error page
    res.status(err.status || 500);
    res.render('error');
  });
  
  module.exports = app;
  let fs = require('fs');
  
  require('axios')
      .get("https://api.nomics.com/v1/currencies/sparkline?key=ab5096e30f3ee1fc7a4d56e972eb65d2&start=2019-01-01T00%3A00%3A00Z&end=2019-12-06T00%3A00%3A00Z")
      .then(response =>{
        var stream = fs.createWriteStream("data.json");
        stream.once('open', function(fd) {
          response.data.forEach(data=>{
            stream.write(JSON.stringify(data));
          });
          stream.end();
          console.log("success")
        });
      });
  
  // write to a new file named data.json
  
  
  
  
  