Canicas

ca-ni-cuz

Sometimes promises are too much. Example:

var knex = require('knex')({client: 'pg', connection: process.env.PG_CONNECTION_STRING});

for (var i = 0; i < 5; i++)
{
  knex('products').insert({title: i + ' bananas', description: 'Full of potassium!'}).then(function() {
    // Don't care
  });
}
// Need to teardown knex pg connection somehow after all inserts are done / callbacks are called

In that case add the function you want to be run when all of your callbacks have fired:

var canicas = require('canicas');
canicas.done = function() {
  knex.destroy(function() {});
};

Add one every time you spin out a new async function:

// snip
for (var i = 0; i < 5; i++)
{
  canicas.inc();
  knex('products').insert({title: i + ' bananas', description: 'Full of potassium!'}).then(function() {
//snip

And make sure to register when a callback has finished:

// snip
knex('products').insert({title: i + ' bananas', description: 'Full of potassium!'}).then(function() {
  // Some important code

  canicas.dec();
};

When all callbacks have been fired the function you registered with canicas.done will be called.

NOTE: done WILL be called as soon as the canicas internal counter reaches 0. If you have 5 callbacks, you spin one out, and it completes before you've incremented the counter done will be called and it could mess up your other 4 callbacks. I'll fix that in the next version.