/**
 * Test Writer
 *
 * Writes GeneratedTestFile objects to disk.
 * Respects --dry-run (preview only) and --merge (append new scenarios).
 *
 * Merge logic:
 *   When --merge is set, the writer reads the existing file and checks which
 *   scenario metadata tags are already present. New scenarios are appended;
 *   existing ones are skipped (no duplicate detection by content hash).
 */
import type { GeneratedTestFile } from '../../types/test-generator.js';
export interface WriteResult {
    written: number;
    skipped: number;
    merged: number;
    dryRunPreview?: string[];
}
export declare function writeTestFiles(opts: {
    files: GeneratedTestFile[];
    rootPath: string;
    dryRun: boolean;
    merge: boolean;
}): Promise<WriteResult>;
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