import type { ReportArtifact } from './types.js';
export interface WriteArtifactOptions {
    output: string;
    overwrite?: boolean;
}
/** Atomic file delivery. Existing files are preserved unless overwrite is explicit. */
export declare function writeReportArtifact(artifact: ReportArtifact, options: WriteArtifactOptions): Promise<{
    path: string;
    overwritten: boolean;
}>;