export declare const EXT: string[];
export declare const REGEX: RegExp;
export declare const MAIN: string;
export declare const CONTENT_TYPE: {
    js: string;
    jsx: string;
    mjs: string;
};
export declare function toJS(file: string): string;
export declare function toJSX(file: string): string;
export declare function toMJS(file: string): string;
export declare function isJS(file: string): boolean;
export declare function isJSX(file: string): boolean;
export declare function isMJS(file: string): boolean;
export declare function only(files: Array<string>): Array<string>;
export declare function isJavascript(file: string): boolean;