/**
 * Expands a pattern so that leet spellings, diacritics and cross-script
 * lookalikes also match.
 *
 * This rewrites the regex *source*, letters and all, so a pattern that carries
 * its own syntax can come out broken: `[abc]` becomes a nest of character
 * classes and `(?<word>…)` loses its capture group name. The filter compiles
 * with the `u` flag, which is strict enough to reject both, and
 * `registerLanguage` compiles the expanded form up front — so this surfaces as
 * an error at registration rather than as silently different matching.
 *
 * Write patterns as plain words. For hand-written regexes, turn `aggressive`
 * off instead.
 */
export declare function toAggressivePattern(pattern: string): string;
//# sourceMappingURL=aggressive.d.ts.map