attach-ware

attach-ware

Middleware with configuration.

Installation

npm:

npm install attach-ware

attach-ware is also available for bower, component, and duo, and as an AMD, CommonJS, and globals module, uncompressed and compressed.

Usage

x.js:

module.exports = function (ctx, options) {
    if (!options.condition) return;

    return function (req, res, next) {
        res.x = 'hello';
        next();
    };
}

y.js:

module.exports = function (ctx, options) {
    if (!options.condition) return;

    return function (req, res, next) {
        res.y = 'world';
        next();
    };
}

index.js:

var ware = require('attach-ware')(require('ware'));
var x = require('./x.js');
var y = require('./y.js');

var middleware = attachWare()
    .use(x, {'condition': true})
    .use(y, {'condition': false})
    .run({}, {}, function (err, req, res) {
        console.log(res.x); // "hello"
        console.log(res.y); // undefined
    });

API

Note: first create a new constructor (later called AttachWare) by passing ware to the by this module exposed function. This enables ware-like libraries to be used too.

new AttachWare()

Create configurable middleware. Works just like ware().

AttachWare#use(attach, input...)

Invokes attach with either attachWare.context or attachWare, and all input.

If attach returns another function (fn, which can be synchronous, asynchronous, or a generator function), that function is added to the middleware, and will be invoked when run() is invoked like normal middleware.

AttachWare#context

The first argument for attachers. When this is falsey, attachWare itself is used.

License

MIT © Titus Wormer