Use Array of Middleware in Koa Router

Koa Router v4.2 does not support an array of middleware, multiple middleware must be entered one by one:

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app.get('/foo', middleware1, middleware2);

Using an array is much cleaner than multiple arguments.

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app.get('/foo', [middleware1, middleware2]);

But the above will throw error:

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Error: GET: `middleware` must be a function, not `object`

This can be easily fixed by using Koa Compose:

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var app = require('koa')();
var router = require('koa-router');
var compose = require('koa-compose');
app.use(router(app));
app.get('/foo', compose([
  function *(next) {
    this.body = {};
    yield next;
  },
  function *(next) {
    this.body.foo = 'foo';
    yield next;
  },
  function *(next) {
    this.body.bar = 'bar';
    yield next;
  }
]));

Hence:

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app.get('/foo', compose([middleware1, middleware2]));