import type { Piece } from './tokenize.cjs';
export interface CapturingPattern {
    regex: RegExp;
    groups: Array<{
        name: string;
        token: string;
    }>;
    ambiguousRuns: Array<{
        groupName: string;
        groupNames: string[];
        tokens: string[];
    }>;
}
/**
 * Same walk as buildPatternSource() in pattern.ts, but each token piece
 * gets its own named capture group (positionally named so the same token,
 * e.g. "yyyy", could in theory appear twice) so a caller can pull the
 * matched substring for each token back out after a successful match.
 */
export declare function buildCapturingPattern(pieces: Piece[], locale: string): CapturingPattern;