const Moment = require('moment')
const array = [{date:"2018-05-11"},{date:"2018-05-12"},{date:"2018-05-10"}]
const sortedArray = array.sort((a,b) => new Moment(a.date).format('YYYYMMDD') - new Moment(b.date).format('YYYYMMDD'))
console.log(sortedArray)