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本文深度剖析了 React.lazy() API 的内部工作机制。内容系统性地阐述了 lazy() 返回的特殊 React 元素如何与 Fiber 架构紧密集成，通过其内部状态机管理模块的异步加载过程。笔记详细解析了其在协调 (Reconciliation) 阶段的特殊处理流程，并揭示了其在性能优化（避免冗余 Fiber 节点）与类型安全方面的设计考量。
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