import type { EncodedRegex, RegexSequence } from '../types';
export type CaptureOptions = {
    /**
     * Name to be given to the capturing group.
     */
    name?: string;
};
export interface Reference extends EncodedRegex {
    name: string;
}
/**
 * Creates a capturing group which allows the matched pattern to be available:
 * - in the match results (`String.match`, `String.matchAll`, or `RegExp.exec`)
 * - in the regex itself, through {@link ref}
 */
export declare function capture(sequence: RegexSequence, options?: CaptureOptions): EncodedRegex;
/**
 * Creates a reference, also known as backreference, which allows matching
 * again the exact text that a capturing group previously matched.
 *
 * In order to form a valid regex, the reference must use the same name as
 * a capturing group earlier in the expression.
 *
 * @param name - Name of the capturing group to reference.
 */
export declare function ref(name: string): Reference;