Merge pull request #650 from julien-f/patch-1
Use new operator to create a Koa v2 app
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@ -25,6 +25,9 @@ $ npm install koa
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Koa v2 is currently in alpha. In this new version, the middleware function signature completely changes in favor of ES2015-2016 syntax:
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```js
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// Koa application is now a class and requires the new operator.
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const app = new Koa()
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// uses async arrow functions
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app.use(async (ctx, next) => {
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try {
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