import type Database from 'better-sqlite3';
export interface RetryOptions {
    /** Maximum number of retries (default: 5) */
    maxRetries?: number;
    /** Base delay in ms for exponential backoff (default: 50) */
    baseMs?: number;
    /** Maximum delay in ms for exponential backoff (default: 1000) */
    maxMs?: number;
    /** Maximum total wait time in ms across all retries (default: 30000) */
    maxTotalWaitMs?: number;
}
/**
 * Execute a function with retry on SQLITE_BUSY using exponential backoff.
 * Each retry doubles the delay, capped at maxMs.
 * Total wait time is capped by maxTotalWaitMs per FS-SS-003-0005 VR-007.
 *
 * @param fn - The function to execute (typically a DB write operation)
 * @param options - Retry configuration
 * @throws DatabaseBusyError (ERR-LOCK-001) if all retries are exhausted
 */
export declare function withRetry<T>(fn: () => T, options?: RetryOptions): T;
/**
 * Execute a database operation within a transaction with retry on busy.
 */
export declare function withTransaction<T>(db: Database.Database, fn: () => T, options?: RetryOptions): T;
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