import { Comment, Fragment } from 'vue';
import { isArray } from '../../shared/index.js';
const isVNodeChildrenEmpty = (children) => children.every((item) => {
    if (item.type === Comment)
        return true;
    if (item.type === Fragment) {
        return (item.children == null ||
            (isArray(item.children) &&
                isVNodeChildrenEmpty(item.children)));
    }
    return false;
});
/**
 * Check whether a slot is currently empty.
 *
 * 检查插槽当前是否为空
 *
 * @param normalizedSlotContent - The normalized slot content, which should be the results of the slot function / 标准化的插槽内容，应该是插槽函数的结果
 *
 * @returns True if the slot content is empty, false otherwise / 如果插槽内容为空则返回 true，否则返回 false
 */
export const isSlotContentEmpty = (normalizedSlotContent) => {
    if (normalizedSlotContent == null)
        return true;
    if (isArray(normalizedSlotContent))
        return isVNodeChildrenEmpty(normalizedSlotContent);
    return false;
};