agar-1477437806.js

/*jslint indent: 2, maxlen: 80, continue: false, unparam: false, node: true */
/* -*- tab-width: 2 -*- */
'use strict';

var async = require('async'), a, b, c, d, db;

db = {
  get: function (num, hnd) { return hnd(null, num * 3); },
};

function randomInt(min, max) { return (min || max); }

async.map([[a, 100], [b, 200], [c, 305], [d, 600]], function (inputData, next) {
  var database = inputData[0], max = inputData[1];

  function onDbReply(dbReplyErr, dbReplyData) {
    if (dbReplyErr) {
      console.error('W:', dbReplyErr);
      return next(dbReplyErr);
    }
    console.log('I: DB get:', dbReplyData);
    return next(null);    // null in the error slot = report success
  }

  db.get(randomInt(0, max), onDbReply);
  console.log('W: unused variable: database =', database);
});