export type FrontmatterValue = string | string[] | Record; export type Frontmatter = { data: Record; body: string; }; export declare function parseFrontmatter(content: string): Frontmatter; export declare function asString(value: FrontmatterValue | undefined): string; export declare function asStringArray(value: FrontmatterValue | undefined): string[] | undefined; export declare function asRecord(value: FrontmatterValue | undefined): Record | undefined;