export interface OkfConcept {
    frontmatter: Record<string, unknown>;
    body: string;
}
export interface OkfPiScholarIdentity {
    managedBy: "pi-scholar";
    sourceId: string;
    chunkId: string;
    ordinal: number;
    sourceDigest?: string;
    chunkDigest?: string;
}
export interface OkfSourceReference {
    readonly id?: string;
    readonly resource: string;
    readonly title?: string;
    readonly piScholar?: OkfPiScholarIdentity;
    readonly metadata: Record<string, unknown>;
}
export interface OkfProjectionPage {
    readonly title: string;
    readonly path: string;
    readonly description?: string;
    readonly updatedAt?: string;
    readonly digest?: string;
}
export declare function okfRenderedText(body: string): string;
export declare function okfMarkdownEscapedAt(value: string, index: number): boolean;
export declare function okfCitationText(body: string): string;
export declare function okfFootnoteLabels(body: string): {
    readonly references: string[];
    readonly definitions: string[];
};
export declare function removeOkfFootnoteDefinitions(body: string, ids: Iterable<string>): string;
export declare function parseOkfConcept(markdown: string): OkfConcept;
export declare function serializeOkfConcept(frontmatter: Record<string, unknown>, body: string): string;
export declare function okfSourceReferences(markdown: string): OkfSourceReference[];
export declare function renderOkfIndex(pages: readonly OkfProjectionPage[], root?: boolean): string;
export declare function okfDate(value: string | undefined): string;
export declare function renderOkfLog(pages: readonly OkfProjectionPage[]): string;
export declare function validateOkfIndex(markdown: string, root?: boolean): void;
export declare function validateOkfLog(markdown: string): void;
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