One-line JavaScript functions

one-line-utils.js

// Immutable Shuffle
const shuffleImmutable = (arr) => arr.slice().sort(() => Math.random() - 0.5)

// Random number in range
const randomInRange = (from, to) => Math.floor(from + Math.random() * (to - from + 1))

// Array with unique items
const uniqueItems = (arr) => [...new Set(arr)]

// Uppercase firs letter
const ucfirst = (str) => str.charAt(0).toUpperCase() + str.slice(1)

// Unique ID
const uniqueID = () => Math.random().toString(36).slice(2)