Tydel uses its events system for exposing watchers.

At this point, only change and method:change events have been implemented, which gets fired whenever a Model or Collection had any changes in them, or their (embedded) children.

  • change: fired on every single change in properties
  • method:change: fired once when a single method performs various changes


From model instances:

const person = new Person({ name: 'Salazar' });

const watcher = person.on('change', function (event) {
  console.log('person has changed in:', event.path);

person.setName('Salazar Slytherin');
// prints out `person has changed in: ['name']` in console

// stop watching


Same like models:

const todos = new Todos();

const watcher = todos.on('change', function (event) {
  console.log('the collection has changed');

todos.push(new Todo({ title: 'blah...' }));
// prints out `the collection has changed` in console

// stop watching