export declare type Callback = (err: Error, css: string, js: string) => void;
export interface IStylusObject {
    render: (callback: Callback) => void;
    set: (key: string, val: any) => this;
    use: (fn: (renderer: IStylusObject) => any) => this;
}
export declare function getStylusObject(str: string): IStylusObject;