"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ensureValidVNode = ensureValidVNode;
exports.resolveSlot = resolveSlot;
exports.resolveSlotWithProps = resolveSlotWithProps;
exports.resolveWrappedSlot = resolveWrappedSlot;
exports.resolveWrappedSlotWithProps = resolveWrappedSlotWithProps;
exports.isSlotEmpty = isSlotEmpty;
const vue_1 = require("vue");
function ensureValidVNode(vnodes) {
    return vnodes.some((child) => {
        if (!(0, vue_1.isVNode)(child)) {
            return true;
        }
        if (child.type === vue_1.Comment) {
            return false;
        }
        if (child.type === vue_1.Fragment
            && !ensureValidVNode(child.children)) {
            return false;
        }
        return true;
    })
        ? vnodes
        : null;
}
/**
 * We shouldn't use the following functions with slot flags `_: 1, 2, 3`
 */
function resolveSlot(slot, fallback) {
    return (slot && ensureValidVNode(slot())) || fallback();
}
function resolveSlotWithProps(slot, props, fallback) {
    return (slot && ensureValidVNode(slot(props))) || fallback(props);
}
/**
 * Resolve slot with wrapper if content exists, no fallback
 */
function resolveWrappedSlot(slot, wrapper) {
    const children = slot && ensureValidVNode(slot());
    return wrapper(children || null);
}
/*
 * Resolve slot with wrapper if content exists, no fallback
 */
function resolveWrappedSlotWithProps(slot, props, wrapper) {
    const children = slot && ensureValidVNode(slot(props));
    return wrapper(children || null);
}
function isSlotEmpty(slot) {
    return !(slot && ensureValidVNode(slot()));
}