For AI agents: the complete documentation index is available at /zh/llms.txt, the full documentation bundle is available at /zh/llms-full.txt, and this page is available as Markdown at /zh/api/react.mainthreadobjecttype.downcast.md.
这是开发预览网站。请访问正式文档 lynx-stack.dev
  • 简体中文

      • Home > @lynx-js/react > MainThreadObjectType > downcast

      MainThreadObjectType.downcast property

      Narrow a value to a source-runtime handle of this exact type.

      This does not create or access the realized main-thread object.

      Signature:

      readonly downcast: (value: unknown) => MainThreadObjectHandle<I, O> | undefined;