LWC Slot handleSlotChange

lwc-slot-onslotchangeevent.js

// _slotComboboxAddon;
// _slowComboboxContainer;
@track _slots = {};
handleSlotChange(event) {
	const slot = event.target;
	this._slots[slot.name] = (slot.assignedElements().length !== 0);
	// if (slot.name === 'combobox-addon') {
	// this._slotComboboxAddon = (slot.assignedElements().length !== 0);
	// this._slots[slot.name] = (slot.assignedElements().length !== 0);
	// const slotHasElements = slot.assignedElements().length !== 0;
	// this.items = slot.assignedElements().map(elem => elem.textContent);
	// this._slotComboboxAddon = slotHasElements ? true : false;
	// }
}

get isSlotsAssigned() {
	let hasNulls;
	Object.values(this._slots).forEach((value) => {
		if (!value) {
			hasNulls = true;
		}
	});
	return !hasNulls;
}