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TJ Holowaychuk 2016-07-25 15:12:08 -07:00 committed by GitHub
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@ -31,7 +31,7 @@ $ npm install koa
npm install koa@2
```
In this new version, the middleware function signature completely changes in favor of ES2015-2016 syntax:
In this new version, the middleware function signature changes to adopt async/await:
```js
// Koa application is now a class and requires the new operator.
@ -53,7 +53,7 @@ app.use(async ctx => {
});
```
Although deprecated, the older, generator-based middleware signature will still work in v2 via [koa-convert](https://github.com/koajs/convert) and will be removed in v3.
Until async/await is natively supported in Node Koa 1.x is the official release, however you may wish to adopt 2.x early by using Babel to compile. Koa 1.x generator-based middleware may be "upgraded" to the 2.x flavour using [koa-convert](https://github.com/koajs/convert).
To learn more about Koa v2, follow [this issue](https://github.com/koajs/koa/issues/533) or read the docs here: https://github.com/koajs/koa/tree/v2.x/docs.