/**
 * Performs some basic cleanup of a string for use as a post slug
 *
 * This replicates some of what sanitize_title() does in WordPress core, but
 * is only designed to approximate what the slug will be.
 *
 * Converts Latin-1 Supplement and Latin Extended-A letters to basic Latin letters.
 * Removes combining diacritical marks. Converts whitespace, periods,
 * and forward slashes to hyphens. Removes any remaining non-word characters
 * except hyphens and underscores. Converts remaining string to lowercase.
 * It does not account for octets, HTML entities, or other encoded characters.
 *
 * @param {string} string Title or slug to be processed
 *
 * @return {string} Processed string
 */
export declare function cleanForSlug(string: string): string;
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