Math with Infinity
Infinity is just a number, dude. Most calculations JavaScript lets us do with Infinity will still return Infinity. Some no longer return numbers.
Read fire tipArray methods shorthand
JavaScript’s array methods pass their values through to the functions given to them. If you would only forward those to another function, you can skip the arrow function and name that function directly.
const numbers = [4, 8, 15, 16, 23, 42]
const isEven = n => n % 2 === 0
numbers.filter(number => isEven(number)) // ⇒ [4, 8, 16, 42]
numbers.filter(isEven) // ⇒ [4, 8, 16, 42]