"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.LazyLoadWrapper = exports.VirtualScrollList = void 0;
const jsx_runtime_1 = require("react/jsx-runtime");
const react_1 = __importStar(require("react"));
const react_window_1 = require("react-window");
exports.VirtualScrollList = react_1.default.memo(({ items, itemHeight, height, renderItem }) => {
    const Row = (0, react_1.useMemo)(() => react_1.default.memo(({ index, style }) => ((0, jsx_runtime_1.jsx)("div", { style: style, children: renderItem(items[index], index) }))), [items, renderItem]);
    return ((0, jsx_runtime_1.jsx)(react_window_1.FixedSizeList, { height: height, itemCount: items.length, itemSize: itemHeight, width: "100%", children: Row }));
});
const LazyLoadWrapper = ({ children, threshold = 0.1 }) => {
    const [isVisible, setIsVisible] = react_1.default.useState(false);
    const ref = react_1.default.useRef(null);
    react_1.default.useEffect(() => {
        const observer = new IntersectionObserver(([entry]) => {
            if (entry.isIntersecting) {
                setIsVisible(true);
                observer.disconnect();
            }
        }, { threshold });
        if (ref.current) {
            observer.observe(ref.current);
        }
        return () => observer.disconnect();
    }, [threshold]);
    return ((0, jsx_runtime_1.jsx)("div", { ref: ref, children: isVisible ? children : (0, jsx_runtime_1.jsx)("div", { style: { height: '100px' } }) }));
};
exports.LazyLoadWrapper = LazyLoadWrapper;
//# sourceMappingURL=PerformanceOptimization.js.map