/**
 * @license
 * Copyright 2022-2026 Matter.js Authors
 * SPDX-License-Identifier: Apache-2.0
 */
import type { Storage } from "./Storage.js";
/**
 * A simple storage migrator of storage.
 *
 * It does not modify or remove source data.
 */
export declare namespace StorageMigration {
    interface MigrationSkipped {
        contexts: string[];
        key: string;
        error: string;
    }
    interface MigrationResult {
        success: boolean;
        migratedCount: number;
        skippedCount: number;
        skippedItems: MigrationSkipped[];
    }
    /**
     * Migrate storage from `source` to `target`.
     */
    function migrate(source: Storage, target: Storage): Promise<MigrationResult>;
    /**
     * Export migration result to log
     */
    function resultToLog(result: MigrationResult): string;
}
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