/**
 * In-memory configuration source
 */
import type { ConfigSource } from '../types/index.js';
export declare class MemoryConfigSource implements ConfigSource {
    readonly name: string;
    readonly priority: number;
    private config;
    private watchCallbacks;
    constructor(initialConfig?: Record<string, unknown>, name?: string, priority?: number);
    load(): Record<string, unknown>;
    save(config: Record<string, unknown>): void;
    watch(callback: (config: Record<string, unknown>) => void): () => void;
    /**
     * Update the configuration and notify watchers
     */
    update(updates: Record<string, unknown>): void;
    /**
     * Clear all configuration
     */
    clear(): void;
    /**
     * Get a copy of the current configuration
     */
    getConfig(): Record<string, unknown>;
    private notifyWatchers;
}
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