export declare class ConfigManager {
    private static _instance;
    private configDir;
    private optionsMap;
    private constructor();
    static get instance(): ConfigManager;
    load(): void;
    write(): void;
    stringify(): string;
    toJSON(): any[];
    getOptionsAsClass<T>(ctor: new () => T, configSection: string): T;
    getOptionsAsPlain(configSection: string): any;
    exists(configSection: string): boolean;
    private getConfigFilePath;
}