Support Koa 2 about cash HOT 5 CLOSED

@lbeschastny I created a version with Koa 2 support: https://github.com/joukosaastamoinen/cash/tree/koa-2-support

If there was a branch for the next version, I could create a pull request.

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Hi there! I've solved it like this, and it seems to be working.

const cash = require('koa-cash');
const convert = require('koa-convert');
const LRU = require('lru-cache');

const cache = LRU(1000);
app.use(convert(cash({
  get: key => cache.get(key),
  set: (key, value) => cache.set(key, value)
})));

app.use(async (ctx, next) => {
  const cashed = await ctx.cashed();
  if (cashed) return;
  await next();
});

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@joukosaastamoinen I've created a next branch and pulled your code there.

I've also published it under next tag to npm.

Now all I need is a confirmation that it works fine with koa@2.

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@lbeschastny I just took it into use in a small production app with Koa 2, and seems to work fine. I confirmed that responses are actually cached.

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Did we bin support for Koa 2?

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