const chain = require('do');

const c1 = chain
  .do(readConfig, 'myConfig')
  .do(selectFromDb, 'select * from cities')
  .do(getHttpPage, 'http://kpi.ua')
  .do(readFile, 'README.md');

c1((err, result) => {
  console.log('done');
  if (err) console.log(err);
  else console.dir({ result });
});

const chain = require('do');
const fs = require('fs');

const dc = chain.do(6);

dc('user', null, { name: 'Marcus Aurelius' });
fs.readFile('HISTORY.md', (err, data) => dc.collect('history', err, data));
fs.readFile('README.md', dc.callback('readme'));
fs.readFile('README.md', dc('readme'));
dc.take('readme', fs.readFile, 'README.md');
setTimeout(() => dc.pick('timer', { date: new Date() }), 1000);