$emit('change', {path: ['duration'], value, ack})"
/>
$emit('change', {path: ['target'], value, ack})"
/>
$emit('change', {path: ['effects', ...path], value, ack})"
@push="({path, value, ack}) => $emit('push', {path: ['effects', ...path], value, ack})"
@pull="({path, ack}) => $emit('pull', {path: ['effects', ...path], ack})"
/>