export declare const EXT: string[];
export declare const REGEX: RegExp;
export declare const MAIN: string;
export declare const CONTENT_TYPE: {
    less: string;
};
export declare function fromCss(file: string): string | null;
export declare function toLESS(file: string): string;
export declare function isLESS(file: string): boolean;
export declare function only(files: Array<string>): Array<string>;