module.exports = createMiddleware var readFileSync = require('fs').readFileSync; function createMiddleware(path) { if (!path) throw new Error('No path provided for sitemap.xml file') var sitemap = readFileSync(path), headers = { 'Content-Type': 'application/xml', 'Content-Length': sitemap.length } return function middleware(req, res, next) { if ('/sitemap.xml' !== req.url) return next() res.writeHead(200, headers) res.end(sitemap) } }