declare type Callback<T = any> = (...arg: T[]) => void;
export declare class Env {
    env: string;
    constructor(env: string);
    get isDev(): boolean;
    get isTest(): boolean;
    get isTesting(): boolean;
    get isPreview(): boolean;
    get isProduction(): boolean;
    get isOnline(): boolean;
    dev(callback: Callback): void;
    test(callback: Callback): void;
    testing(callback: Callback): void;
    preview(callback: Callback): void;
    production(callback: Callback): void;
    online(callback: Callback): void;
    get(config: any): any;
}
export default Env;