array to object es6

arrayToObject.js

const arrayToObject = (array) => {
	return array.reduce(function(result, item) {
		var key = Object.keys(item)[0];
		
		if(Array.isArray(item[key])) {
			item[key] = arrayToObject(item[key]);
		}

		result[key] = item[key];
		return result;
	}, {});

}

let new_arr = [];

data.map((val,key) => {
	let obj = arrayToObject(val.historyRecord)
	new_arr.push(obj);
});

console.log(new_arr);