import { IConfig } from 'config';
export interface ConfigInterface extends IConfig {
    get<T = ConfigInterface>(key: string): T;
}
export declare class Config {
    private static _data;
    static ensureConfigData(): void;
    /**
     * Load the config
     */
    static load(payload?: any): ConfigInterface;
    static attachProtoDeep(payload: any): ConfigInterface;
    /**
     * Return config data
     */
    static getData(): ConfigInterface;
    /**
     * Check if the settings exists
     *
     * @param  {string} key
     * @returns boolean
     */
    static has(key: string): boolean;
    /**
     * Return the config value
     * from a key
     *
     * @param  {string} key
     * @param  {any} defaultValue
     * @returns any
     */
    static get<T = ConfigInterface>(key: string, defaultValue?: any): T;
}