import { type GenerateGraphResult } from '../generate.js';
import type { SpiCacheStats } from '../../pipeline/spi/cache.js';
export type GeneratePerformanceVariantName = 'generate-legacy' | 'generate-spi-cold' | 'generate-spi-warm' | 'update-noop' | 'update-changed' | 'cluster-only';
export interface GeneratePerformanceVariantSummary {
    mode: GenerateGraphResult['mode'];
    strategy: 'legacy' | 'spi';
    wall_clock_ms: number;
    total_files: number;
    code_files: number;
    non_code_files: number;
    extractable_files: number;
    extracted_files: number;
    changed_files: number;
    deleted_files: number;
    node_count: number;
    edge_count: number;
    output_size_bytes: number;
    graph_size_bytes: number;
    cache_hit: boolean | null;
    cache_reason: SpiCacheStats['reason'] | null;
    cache_file_count: number | null;
    notes: string[];
}
export interface RunGeneratePerformanceBenchmarkOptions {
    fixtureRoot: string;
    workDir: string;
}
export interface GeneratePerformanceBenchmarkSummary {
    schema_version: 1;
    fixture_path: string;
    work_dir: string;
    metrics_tracked: string[];
    variants: Record<GeneratePerformanceVariantName, GeneratePerformanceVariantSummary>;
}
export declare function directorySize(path: string): number;
export declare function runGeneratePerformanceBenchmark(options: RunGeneratePerformanceBenchmarkOptions): GeneratePerformanceBenchmarkSummary;