/**
 * File Change Tracker - Tracks file modifications for revert functionality
 *
 * This module stores original file content before modifications so users
 * can revert all changes made during a run with /revert command.
 */
export interface FileChangeRecord {
    /** Original content before modification (null if file was created) */
    originalContent: string | null;
    /** Whether file existed before this run */
    existedBefore: boolean;
    /** Timestamp of first modification */
    firstModified: number;
    /** Number of times modified this run */
    modifyCount: number;
}
/**
 * Start a new run - clears previous change tracking
 */
export declare function startNewRun(): void;
/**
 * Record original content before a file is modified
 * Only records the FIRST state - subsequent edits don't overwrite
 */
export declare function recordFileChange(filePath: string): void;
/**
 * Get all changed files in the current run
 */
export declare function getChangedFiles(): Map<string, FileChangeRecord>;
/**
 * Check if there are any changes to revert
 */
export declare function hasChangesToRevert(): boolean;
/**
 * Revert all changes made during the current run
 * Returns a summary of what was reverted
 */
export declare function revertAllChanges(workingDir: string): string;
/**
 * Get a summary of pending changes that can be reverted
 */
export declare function getRevertSummary(workingDir: string): string;
/**
 * Clear change tracking (for testing or manual reset)
 */
export declare function clearChangeTracking(): void;
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