流

/* @flow */

function product(a: number, b: number){
  return a * b;
}

const b = 3;
let c = [1,2,3,,{}];
let d = 3;

import request from 'request';

request('http://dev.markitondemand.com/MODApis/Api/v2/Quote/json?symbol=AAPL', (err, res, payload)=>{
  payload = JSON.parse(payload);
  let {LastPrice} = payload;
  console.log(LastPrice);
});