/** Case- and accent-insensitive form used for every comparison: "Crème Brûlée" -> "creme brulee". */
export declare const foldText: (text: string) => string;
export declare const splitWords: (folded: string) => string[];
/** Folded, de-duplicated query tokens in typing order. */
export declare const tokenize: (query: string) => string[];
/** True when folded text carries combining marks, so its written letters span several characters. */
export declare const hasMarks: (folded: string) => boolean;
/** Written letters: a base with its marks; a Devanagari conjunct counts as one. */
export declare const letters: (word: string) => string[];
/** Folded text plus each folded index's position in the original text. */
export type FoldedText = {
    folded: string;
    map: number[];
};
export declare const foldWithMap: (text: string) => FoldedText;