import { ConfigLoaderOptions } from './config-loader.options';
export declare class ConfigLoader {
    private readonly options?;
    private readonly loadedFiles;
    constructor(options?: ConfigLoaderOptions | undefined);
    read(filename: string): any;
    load(filename: string, env?: string): any;
    reload(filename: string, env?: string): any;
    readAsync(filename: string): Promise<any>;
    loadAsync(filename: string, env?: string): Promise<any>;
    reloadAsync(filename: string, env: string): Promise<any>;
    private getPath;
}
export declare const DEFAULT_CONFIG_LOADER: ConfigLoader;
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