/**
 * Driver Registry
 *
 * Manages multiple driver delegates for Rebase backend.
 * Allows different databases for different collections.
 *
 * Usage:
 * - Single DB: Pass a single DataDriver → maps to "(default)"
 * - Multiple DBs: Pass a map of { dbId: DataDriver }
 * - Collections use `databaseId` property to specify which driver to use
 * - Collections without `databaseId` fallback to "(default)"
 */
import { DataDriver } from "@rebasepro/types";
/**
 * The default driver identifier used when:
 * - A single driver is provided (not a map)
 * - A collection doesn't specify a databaseId
 */
export declare const DEFAULT_DRIVER_ID = "(default)";
/**
 * Registry for managing multiple driver delegates
 */
export interface DriverRegistry {
    /**
     * Register a driver delegate with an ID
     * @param id - Unique identifier for this driver (e.g., "analytics", "users")
     * @param delegate - The DataDriver instance
     */
    register(id: string, delegate: DataDriver): void;
    /**
     * Get the default driver delegate (id = "(default)")
     * @throws Error if no default driver is registered
     */
    getDefault(): DataDriver;
    /**
     * Get a driver delegate by ID
     * @param id - Driver identifier, or undefined/null for default
     * @returns The DataDriver, or undefined if not found
     */
    get(id: string | undefined | null): DataDriver | undefined;
    /**
     * Get a driver delegate by ID, with fallback to default
     * @param id - Driver identifier, or undefined/null for default
     * @returns The DataDriver (falls back to default if id not found)
     * @throws Error if neither the specified nor default driver exists
     */
    getOrDefault(id: string | undefined | null): DataDriver;
    /**
     * Check if a driver with the given ID exists
     */
    has(id: string): boolean;
    /**
     * List all registered driver IDs
     */
    list(): string[];
    /**
     * Get the number of registered drivers
     */
    size(): number;
}
/**
 * Default implementation of DriverRegistry
 */
export declare class DefaultDriverRegistry implements DriverRegistry {
    private delegates;
    /**
     * Create a DriverRegistry from either a single delegate or a map
     * @param input - Single DataDriver (maps to "(default)") or Record<string, DataDriver>
     */
    static create(input: DataDriver | Record<string, DataDriver>): DefaultDriverRegistry;
    register(id: string, delegate: DataDriver): void;
    getDefault(): DataDriver;
    get(id: string | undefined | null): DataDriver | undefined;
    getOrDefault(id: string | undefined | null): DataDriver;
    has(id: string): boolean;
    list(): string[];
    size(): number;
}