MiddlewareHandler

MiddlewareHandler manages custom middlewares in the same way as how Express/Connect does.

var MiddlewareHandler = require('middleware-handler');

handler = new MiddlewareHandler();
handler.use(function(a, b, next()) {
  console.log(a, b); // foo bar
  next();
});
handler.handle(['foo', 'bar']);

Installation

$npm install middleware-handler

Documentation

#use(middleware)

middleware accepts variable arguments and a callback.

handler = new MiddlewareHandler();
handler.use(function(arg, next) {
  var err;
  // do some stuff
  next(err); // optionally accepts an error object
});

#clear()

Clear all middlewares from the stack.

handler = new MiddlewareHandler();
handler.use(function() {});
console.log(handler.stack.length); // 1

handler.clear();
console.log(handler.stack.length); // 0

#handle([args], [callback])

Invoke middlewares.

handler = new MiddlewareHandler();
handler.use(function(a, b, next) {
  console.log(a, b); // foo bar
  next();
});
handler.handle(['foo', 'bar'], function(err) {
  // after calling all middlewares
});

#compose([callback])

Create a function that invokes middlewares.

handler = new MiddlewareHandler();
handler.use(function(a, b, next) {
  console.log(a, b); // foo bar
  next();
});

var fn = handler.compose(function(err) {
    // after calling all middlewares
  });
fn('foo', 'bar');

compose(middlewares...)

Create a function that invokes the passed middlewares.

function middleware(a, b, next) {
  console.log(a, b); // foo bar
  next();
}

var fn = MiddlewareHandler.compose(middleware, function(a, b) {
    console.log(a, b); // foo bar
  });
fn('foo', 'bar');