/**
 * Text-similarity helpers shared by the duplicate rules and the structural
 * analysis.
 *
 * Both need to answer "are these two chunks saying the same thing?", and both
 * need to answer it the same way — a rule that removes a near-duplicate and an
 * advisory that reports one should never disagree about what "near" means.
 */
/** Normalises a line or paragraph for duplicate comparison. */
export declare function normalizeForCompare(text: string): string;
/** Jaccard similarity over word sets. */
export declare function jaccard(a: string, b: string): number;
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