/**
 * [WHO]: Public exports from this file (see implementation below).
 * [FROM]: See the import block immediately after this header.
 * [TO]: sparkdesign package consumers; output of CLI `add` when applicable.
 * [HERE]: src/lib/file-icon.tsx — Spark Design source; keep aligned with the main library.
 *
 * [PROTOCOL]:
 * 1. Keep this P3 header in sync when the public contract changes.
 * 2. Update module AGENTS.md (P2) and root AGENTS.md (P1) when boundaries change.
 * 3. Follow design tokens and explicit type exports.
 */
import type { ReactNode } from 'react';
/**
 * 根据文件名返回文件图标。
 * 主库仅提供通用占位图标；用户通过 IconsProvider 传入 getFileIcon 时可实现按扩展名映射（如 Lucide、Remix）。
 */
export declare function getFileIconByFilename(filename: string, className?: string): ReactNode;