declare module 'mime-types' {
    export function contentType(filename: string): string | false;
    export function extension(type: string): string | false;
    export function lookup(path: string): string | false;
    export function charset(type: string): string | false;
    export function contentTypeByHeader(header: string): string | false;
    export const extensions: string[];
    export const types: string[];
}
declare module 'sanitize' {
    export function escape(s: string): string;
    export function escapeHTML(s: string): string;
    export function escapeHTMLComment(s: string): string;
    export function escapeScript(s: string): string;
    export function escapeStyle(s: string): string;
    export function escapeURL(s: string): string;
    export function unescapeHTML(s: string): string;
    export function unescapeScript(s: string): string;
    export function unescapeURL(s: string): string;
    export const middleware: any;
}

declare module 'cookie-parser' {
    export default function cookieParser(secret?: string, options?: any): any;
}