/**
 * Watch Mode - Enhanced file watcher with smart change detection.
 * Watches test files, source files, and trace directories.
 * Re-runs only affected tests when possible.
 */
import type { ReportFormat, SuiteResult } from './types';
export interface SmartWatchOptions {
    paths: string[];
    format?: ReportFormat;
    updateSnapshots?: boolean;
    tags?: string[];
    debounceMs?: number;
    onResult?: (result: SuiteResult) => void;
}
export interface WatchEvent {
    type: 'change' | 'add' | 'remove';
    path: string;
    timestamp: string;
}
export interface WatchSession {
    events: WatchEvent[];
    runs: number;
    passed: number;
    failed: number;
    startedAt: string;
}
/**
 * Determine which suite files are affected by a changed file.
 */
export declare function findAffectedSuites(changedFile: string, suitePaths: string[]): string[];
/**
 * Format a watch event for display.
 */
export declare function formatWatchEvent(event: WatchEvent): string;
/**
 * Format the watch session summary.
 */
export declare function formatWatchSession(session: WatchSession): string;
/**
 * Start smart watch mode.
 * Returns a cleanup function to stop watching.
 */
export declare function startSmartWatch(opts: SmartWatchOptions): {
    stop: () => void;
    session: WatchSession;
};
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