picomachine

PicoMachine: minimal finite state machine

PicoMachine

a.k.a.: MicroMachine for javascript

PicoMachine is a javascript version of MicroMachine and have the same goals. To be a minimal and fully functional minimal state machine.

var PicoMachine = require('picomachine');
 
var machine = new PicoMachine('new'); // Initial state. 
 
machine.transitionsFor['confirm'] = { new: 'confirmed' };
machine.transitionsFor['ignore']  = { new: 'ignored' };
machine.transitionsFor['reset']   = { confirmed: 'new', ignored: 'new' };
 
machine.trigger('confirm');  // true 
machine.trigger('ignore');   // false 
machine.trigger('reset');    // true 
machine.trigger('ignore');   // true 
machine.trigger('reset');
 
// Callback for the 'confirm' event 
machine.on('confirmed', function() {
  console.log('The thing is confirmed');
});
 
// Callback for all the things! 
machine.on('any', function() {
  console.log("I'm triggered in allllll the events!!!");
});
 
machine.trigger('confirm');
// The thing is confirmed 
// I'm triggered in allllll the events!!! 
 
machine.on('something', function() {
  // Inside a callback 'this' represents the machine 
  // so you can trigger other events within it 
  this.trigger('otherThing');
});