Sequenz NPM | npm.io

sequenz

sequenz composes connect middleware for nodejs

sequenz makes a single middleware from multiple middlewares

install

npm install sequenz

put this line in the dependencies section of your package.json:

"sequenz": "1.0.7"

then run:

npm install

use

a middleware is a function of three arguments: the request object req from the nodejs http server, the response objectres from the nodejs http server and a callback next. middleware handles the request and usually modifies the response. if a middleware doesn't end the request it should call next to give control to the next middleware.

the sequenz module exports a single function. that function either takes a single array of middlewares or any number of middlewares as separate arguments. it returns a new middleware that will call those middlewares in order.

example

the example uses some connect middleware and passage for routing.

var http = require('http');
var connect = require('connect');
var sequenz = require('sequenz');
var passage = require('passage');

var routes = sequenz(
    passage.get('/', function(req, res, next) {
        res.end('landing page');
    }),
    passage.get('/about', function(req, res, next) {
        res.end('about page');
    })
);

var middleware = sequenz(
    function(req, res, next) {
        console.log('i am a middleware that is called first on every request');
        next();
    },
    connect.favicon(),
    connect.bodyParser(),
    connect.cookieParser(),
    connect.query(),
    routes,
    function(req, res, next) {
        res.statusCode = 404;
        res.end('not found');
    }
);

var server = http.createServer(middleware);

server.listen(8080);