/**
 * Recovery module for FeltDB
 *
 * Implements recovery of database state from operation logs and checkpoints.
 * Ensures that:
 * - Records are reconstructed correctly
 * - Indexes are restored
 * - Derived collections rebuild correctly
 * - Subscriptions continue to work
 * - All counts and queries produce correct results
 */
import type { Operation } from './operation.js';
import type { JsDb } from './feltdb.js';
/**
 * Recovery information for diagnostics
 */
export interface RecoveryInfo {
    /** Total operations recovered */
    operationsRecovered: number;
    /** Checkpoint data recovered */
    checkpointRecovered: boolean;
    /** Total records reconstructed */
    recordsReconstructed: number;
    /** Recovery duration in milliseconds */
    durationMs: number;
    /** Whether recovery completed successfully */
    successful: boolean;
    /** Error message if recovery failed */
    error?: string;
}
/**
 * Recover database state from operation log and checkpoints
 *
 * This function:
 * 1. Loads checkpoint if available (base state)
 * 2. Replays delta operations on top of checkpoint
 * 3. Reconstructs all in-memory state
 * 4. Re-establishes indexes
 * 5. Rebuilds derived collections
 *
 * The process is transparent to the application - it sees the same
 * state as if the database had never stopped.
 */
export declare function recoverFromLog(jsDb: JsDb, operationLog: Operation[]): Promise<RecoveryInfo>;
/**
 * Verify that recovered state is correct
 *
 * This is primarily for testing to ensure recovery worked properly.
 * Verifies:
 * - Records are present
 * - Indexes work
 * - Derived collections can be queried
 * - Subscriptions can be created
 * - Counts are accurate
 */
export interface RecoveryVerification {
    recordsPresent: number;
    queriesWorking: boolean;
    derivedCollectionsRebuild: boolean;
    subscriptionsWork: boolean;
    countsAccurate: boolean;
    allVerificationsPass: boolean;
}
/**
 * Run verification tests on recovered state
 */
export declare function verifyRecovery(jsDb: JsDb, capability: string, expectedRecordCount: number): Promise<RecoveryVerification>;
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