var queue = require('queue')
  .on('error', function(job) {}) // queue error handler
  .on('complete', function(job) {}); // queue success handler

// define a new task
queue
  .define('my-task')
  .online() // check that navigator is online before attempting to process job
  .interval('10s') // replay a failed job every 10sec (default is 2sec)
  .retry(5) // retry up to 5 times
  .timeout('10ms') // task fail if it lasts more than 10ms
  .lifetime('5m') // stop retrying if job is more than 5min old
  .action(function(job, done) {
    // ...
    done(err); // pass an error to the callback if task failed
  });

// load and process jobs persisted in the localstorage
queue.start();

// process a new job
job = queue
  .create('my-task', data)
  .on('error', function() {}) // job error handler
  .on('complete', function() {}) // job success handler