/**
 * Produces a plain, normalized search string from possibly-HTML content.
 *
 * Strips tags, removes punctuation, then applies the shared text normalization
 * (lowercase, zero-width removal, whitespace collapse). Suitable for building
 * full-text indexes (e.g. lunr) or matching free-text queries.
 * @param {string | null | undefined} html - Content that may contain HTML.
 * @returns {string} The normalized, tag-free search text.
 */
export declare const normalizeTextForSearch: (html: string | null | undefined) => string;
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