/**
 * Markdown Preview Utilities
 *
 * Helpers for determining markdown preview mode and related checks.
 *
 * @module transforms/md/utils
 */
/**
 * Check if a markdown file should be rendered with GitHub preview styles.
 * Returns true for all .md files unless opted out via `prose: false` frontmatter.
 * This includes both standalone files and routable pages (pages/, app/).
 */
export declare function isMarkdownPreview(_filePath: string | undefined, frontmatter?: Record<string, unknown>): boolean;
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