import { DocDeltaConfig } from '../types';
export declare class ConfigManager {
    private static instance;
    private config;
    private configPath;
    private constructor();
    private determineOutputDir;
    private normalizePath;
    static getInstance(): ConfigManager;
    private loadConfig;
    private mergeConfigs;
    getConfig(): DocDeltaConfig;
    updateConfig(updates: Partial<DocDeltaConfig>): void;
    saveConfig(): void;
    validateConfig(): string[];
}
export declare const config: ConfigManager;
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