⚡ JavaScript📦Chapter 12Data: Arrays, Objects, MapsThe collection types you'll use 1000 times a week. Destructuring, spread, immutability.2 lessons~1 hr1Arrays Deepmap, filter, reduce, find, some, every, flat, group, immutable copies. 35m2Objects, Maps & SetsWhen to reach for Map vs object, destructuring, spread. 25m Previous chapter🔧 Functions, Scope, ClosuresNext chapter ⏳ Async JavaScript