jinxin Andrew-He

## adder
simple async summer

## App.ts
import Catch from './catched'

const getDataErrorHandler = (error, ctx) => {
  ctx.errorMessage = error.message
}


class App {
  errorMessage = ''
	import Catch from './catched'

	const getDataErrorHandler = (error, ctx) => {
	ctx.errorMessage = error.message
	}


	class App {
	errorMessage = ''