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README.md
middie
middie is the module that add middlewares support on steroids to Fastify.
The syntax style is the same as express/connect.
Does not support the full syntax middleware(err, req, res, next)
, because error handling is done inside Fastify.
If you want to see how use this module with Fastify, check here.
Install
npm install middie --save
Usage
const Middie = require('middie')
const http = require('http')
const helmet = require('helmet')
const cors = require('cors')
const middie = Middie(_runMiddlewares)
middie.use(helmet())
middie.use(cors())
http
.createServer(function handler (req, res) {
middie.run(req, res)
})
.listen(3000)
function _runMiddlewares (err, req, res) {
if (err) {
console.log(err)
res.end(err)
return
}
// => routing function
}
Keep the context
If you need it you can also keep the context of the calling function by calling run
with run(req, res, this)
, in this way you can avoid closures allocation.
http
.createServer(function handler (req, res) {
middie.run(req, res, { context: 'object' })
})
.listen(3000)
function _runMiddlewares (err, req, res, ctx) {
if (err) {
console.log(err)
res.end(err)
return
}
console.log(ctx)
}
Restrict middleware execution to a certain path(s)
If you need to run a middleware only under certains path(s), just pass the path as first parameter to use
and you are done!
Note that this does support routes with parameters, e.g. /user/:id/comments
, but all the matched parameters will be discarded
// Single path
middie.use('/public', staticFiles('/assets'))
// Multiple middleware
middie.use('/public', [cors(), staticFiles('/assets')])
// Multiple paths
middie.use(['/public', '/dist'], staticFiles('/assets'))
// Multiple paths and multiple middleware
middie.use(['/public', '/dist'], [cors(), staticFiles('/assets')])
To guarantee compatibility with Express, adding a prefix uses path-to-regexp
to compute
a RegExp
, which is then used to math every request: it is signficantly slower.
Acknowledgements
This project is kindly sponsored by:
License
Licensed under MIT.