var auth = require('basic-auth');

var admins = {
    'admin@mail.no': { password: 'P@$$w0rd!' },
};

export function authorize(req, res, next) {

    var user = auth(req);
    if (!user || !admins[user.name] || admins[user.name].password !== user.pass) {
        res.set('WWW-Authenticate', 'Basic realm="example"');
        return res.status(401).send();
    }
    return next();
};
/* ...app.js
import {authorize} from'./auth';
var app = express();
app.use(authorize);
*/