Events

// Returns an unsubscribe function
const off = widget.on('mySlider', 'change', (value) => {
  console.log('slider is now', value);
});

// One-time
widget.once('myWidget', 'ready', () => { /* ... */ });

// Stop listening
off();
widget.off('mySlider', 'change');   // remove all 'change' handlers

widget.emit('myWidget', 'update', newValue);

// Slider hits the ends of its range
widget.on('slider-1', 'min', (value) => {
  console.warn('At minimum:', value);
  widget.emit('alert-label', 'error', 'Too low!');
});
widget.on('slider-1', 'max', (value) => {
  console.warn('At maximum:', value);
});

// A bound value crosses a configured threshold
widget.on('temperature-sensor', 'threshold', (data) => {
  console.log('Crossed:', data.value, 'threshold:', data.threshold);
});