95 lines
3.1 KiB
Markdown
95 lines
3.1 KiB
Markdown
<img src="https://dl.dropboxusercontent.com/u/6396913/koa/logo.png" alt="koa middleware framework for nodejs" width="255px" />
|
|
|
|
[![NPM version][npm-image]][npm-url]
|
|
[![build status][travis-image]][travis-url]
|
|
[![Test coverage][coveralls-image]][coveralls-url]
|
|
|
|
Expressive middleware for node.js using generators via [co](https://github.com/visionmedia/co)
|
|
to make web applications and APIs more enjoyable to write. Koa's middleware flow in a stack-like manner allowing you to perform actions downstream, then filter and manipulate the response upstream. Koa's use of generators also greatly increases the readability and robustness of your application.
|
|
|
|
Only methods that are common to nearly all HTTP servers are integrated directly into Koa's small ~550 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 0.11.9__ or higher for generator support, and must run node(1)
|
|
with the `--harmony` flag. If you don't like typing this, add an alias to your shell profile:
|
|
|
|
```
|
|
alias node='node --harmony'
|
|
```
|
|
|
|
## Community
|
|
|
|
- [API](docs/api/index.md) documentation
|
|
- [Badgeboard](https://koajs.github.io/badgeboard) and list of official modules
|
|
- [Examples](https://github.com/koajs/examples)
|
|
- [Middleware](https://github.com/koajs/koa/wiki) list
|
|
- [Wiki](https://github.com/koajs/koa/wiki)
|
|
- [G+ Community](https://plus.google.com/communities/101845768320796750641)
|
|
- [Reddit Community](http://reddit.com/r/koajs)
|
|
- [Mailing list](https://groups.google.com/forum/#!forum/koajs)
|
|
- [Guide](docs/guide.md)
|
|
- [FAQ](docs/faq.md)
|
|
- [中文文档](http://koajs.cn/)
|
|
- __#koajs__ on freenode
|
|
|
|
## Getting started
|
|
|
|
- [kick-off-koa](https://github.com/koajs/kick-off-koa) - An intro to koa via a set of self-guided workshops.
|
|
- [workshop](https://github.com/koajs/workshop) - A workshop to learn the basics of koa, Express' spiritual successor.
|
|
|
|
## Example
|
|
|
|
```js
|
|
var koa = require('koa');
|
|
var app = koa();
|
|
|
|
// logger
|
|
|
|
app.use(function *(next){
|
|
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 *(){
|
|
this.body = 'Hello World';
|
|
});
|
|
|
|
app.listen(3000);
|
|
```
|
|
|
|
## Running tests
|
|
|
|
```
|
|
$ make test
|
|
```
|
|
|
|
## Authors
|
|
|
|
- [TJ Holowaychuk](https://github.com/visionmedia)
|
|
- [Jonathan Ong](https://github.com/jonathanong)
|
|
- [Julian Gruber](https://github.com/juliangruber)
|
|
- [Yiyu He](https://github.com/dead-horse)
|
|
|
|
# License
|
|
|
|
MIT
|
|
|
|
[npm-image]: https://img.shields.io/npm/v/koa.svg?style=flat-square
|
|
[npm-url]: https://npmjs.org/package/koa
|
|
[travis-image]: https://img.shields.io/travis/koajs/koa/master.svg?style=flat-square
|
|
[travis-url]: https://travis-ci.org/koajs/koa
|
|
[coveralls-image]: https://img.shields.io/coveralls/koajs/koa/master.svg?style=flat-square
|
|
[coveralls-url]: https://coveralls.io/r/koajs/koa?branch=master
|