cf-conditionals.js

/**
 * Run callback function after a Caldera Forms conditional logic event has transpired
 *
 * Required Caldera Forms 1.8.0 or later.
 */
jQuery(document).on('cf.form.init', function (event, data) {
	var state = data.state;
	//runs whenever a field of this form id enabled
	state.events.attatchEvent( 'cf.enable', function(fieldIdAttr, formIdAttr){
		console.log(fieldIdAttr, formIdAttr);
	});

	//runs whenever a field of this form id disabled
	state.events.attatchEvent( 'cf.disabled', function(fieldIdAttr, formIdAttr){
		console.log(fieldIdAttr, formIdAttr);
	});

	//runs whenever a field of this form id hiden
	state.events.attatchEvent( 'cf.hide', function(fieldIdAttr, formIdAttr){
		console.log(fieldIdAttr, formIdAttr);
	});

	//runs whenever a field of this form id shown
	state.events.attatchEvent( 'cf.show', function(fieldIdAttr, formIdAttr){
		console.log(fieldIdAttr, formIdAttr);
	});
});

I get this: state.events.attatchEvent is not a function

it might just be state.events().attatchEvent instead

https://github.com/CalderaWP/Caldera-Forms/blob/master/assets/js/state/state.js#L221

@mdorchain did it work for you like that, state.events().attachEvent()?

I got the same initial error as pless84 mentioned, your fix removed that error, but I'm not seeing any of them fire in the console when fields are conditionally displayed or removed.