DefinitelyTyped/types/send/send-tests.ts

import express = require('express');
import send = require('send');

var app = express();

send.mime.define({
  'application/x-my-type': ['x-mt', 'x-mtt']
});

app.get('/test.html', (req, res) => {
    send(req, '/test.html', {
        maxAge: 0,
        root: __dirname + '/wwwroot'
    }).pipe(res);
});

app.get('/test.html', (req, res) => {
    send(req, '/test.html')
        .maxage(0)
        .root(__dirname + '/wwwroot')
        .on('error', (err: any) => {
            res.statusCode = err.status || 500;
            res.end(err.message);
        })
        .on('directory', () => {
            res.statusCode = 301;
            res.setHeader('Location', req.url + '/');
            res.end('Redirecting to ' + req.url + '/');
        })
        .on('headers', (res: any, path: string, stat: any) => {
            res.setHeader('Content-Disposition', 'attachment');
        })
        .pipe(res);
});