A koa2 middleware to catch error and set response
npm install koa-error-catcher --save
const Koa = require('koa');
const app = new Koa();
const errorCatcher = require('koa-error-catcher');
// error catcher
app.use(errorCatcher);
app.use(ctx => {
ctx.throw('throw an error')
ctx.body = {ok: 1}
});
app.listen(3030);
// curl -v 127.0.0.1:3030
// response 500 & body is {"message":"throw an error"}