JSFiddle - React, Tailwind, and code Playground

JavaScript

var content = {
    "items": [{
        "id": "02egnc0eo7qk53e9nh7igq6d48",
        "summary": "Learn to code",
        "start": {
          "dateTime": "2017-03-04T19:00:00+05:30"
        }
      }]
 }

var parsed = content.items.map(function (item) {
	return {
		id: item.id,
		title: item.summary,
		start: item.start.dateTime,
		description: item.start.dateTime
	}
})

console.log(parsed)