/**
 * Checks if a string is a regex pattern.
 */
export declare function isRegexPattern(input: string | null | undefined): boolean;
/**
 * Converts a string to RegExp. Handles both regular strings and regex patterns.
 * For regular strings, creates exact match regex.
 * For patterns like "/pattern/flags", creates corresponding RegExp.
 */
export declare function createRegexFromString(input: string): RegExp;
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