/**
 * Normalizes text for case-insensitive comparison and matching.
 *
 * Lowercases, trims, strips zero-width characters, and collapses all remaining
 * whitespace (which `\s` already covers, including NBSP and ideographic spaces)
 * into single ASCII spaces, so visually-identical strings compare equal.
 * @param {string | null | undefined} text - The text to normalize.
 * @returns {string} The normalized text.
 */
export declare const normalizeText: (text: string | null | undefined) => string;
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