72 lines
1.8 KiB
Markdown
72 lines
1.8 KiB
Markdown
|
|
|
|
|
|
Expressive middleware for node.js using generators via [co](https://github.com/visionmedia/co)
|
|
to make writing web applications and REST APIs more enjoyable to write.
|
|
|
|
Only methods that are common to nearly all HTTP servers are integrated directly into Koa's small ~400 SLOC codebase. This
|
|
includes things like content-negotiation, normalization of node inconsistencies, redirection, and a few others.
|
|
|
|
No middleware are bundled with koa. If you prefer to only define a single dependency for common middleware, much like Connect, you may use
|
|
[koa-common](https://github.com/koajs/common).
|
|
|
|
## Installation
|
|
|
|
```
|
|
$ npm install koa
|
|
```
|
|
|
|
To use Koa you must be running __node 0.11.4__ or higher for generator support, and must run node(1)
|
|
with the `--harmony-generators` flag. If you don't like typing this, add an alias to your shell profile:
|
|
|
|
```
|
|
alias node='node --harmony-generators'
|
|
```
|
|
|
|
## Community
|
|
|
|
- [API](docs/api.md) documentation
|
|
- [Middleware](https://github.com/koajs/koa/wiki/Middleware) list
|
|
- [Wiki](https://github.com/koajs/koa/wiki)
|
|
- [G+ Community](https://plus.google.com/communities/101845768320796750641)
|
|
- [Mailing list](https://groups.google.com/forum/#!forum/koajs)
|
|
- __#koajs__ on freenode
|
|
|
|
## Example
|
|
|
|
```js
|
|
var koa = require('koa');
|
|
var app = koa();
|
|
|
|
// logger
|
|
|
|
app.use(function(next){
|
|
return function *(){
|
|
var start = new Date;
|
|
yield next;
|
|
var ms = new Date - start;
|
|
console.log('%s %s - %s', this.method, this.url, ms);
|
|
}
|
|
});
|
|
|
|
// response
|
|
|
|
app.use(function(next){
|
|
return function *(){
|
|
yield next;
|
|
this.body = 'Hello World';
|
|
}
|
|
});
|
|
|
|
app.listen(3000);
|
|
```
|
|
|
|
## Running tests
|
|
|
|
```
|
|
$ make test
|
|
```
|
|
|
|
# License
|
|
|
|
MIT
|