export type CorpusBaselineSource = 'provided' | 'manifest' | 'estimated';
export interface CorpusBaseline {
    words: number;
    tokens: number;
    source: CorpusBaselineSource;
}
export interface CorpusBaselineOptions {
    graphPath?: string | undefined;
    corpusWords?: number | null | undefined;
}
export declare function corpusTokensFromWords(words: number): number;
export declare function formatTokenRatio(corpusTokens: number, queryTokens: number): string;
export declare function resolveCorpusBaseline(nodeCount: number, options?: CorpusBaselineOptions): CorpusBaseline;