There is a relatively new operator called spread, and it is sybolized by three persiods such as … the docs It separates out arrays, strings, and objects and allows you to manipulate them in ways that could be have been a pain in the past. The code below is just one example where the spread operator replaces two functions that would have been used before.

// this is the old way
var myOldArray = ['a', 'b','c','d'];
myOldArray.push('end');
myOldArray.unshift('start');
console.log(myOldArray);

// and this is the new cool kids way
let myES6Array = ['a', 'b','c','d'];
myES6Array = ['start',...myES6Array, 'end'];
console.log(myES6Array);

create for this goes to Joshua Fluke for showing this neat trick.