import lodash

JavaScript
// import entire library
import _ from "lodash"
const nums = [1, 2, 2, 3, 1, 4]
let res = _.uniq(nums)

// import methods by name
// Still loads entire lodash library!!
import { uniq } from "lodash"
const nums = [1, 2, 2, 3, 1, 4]
let res = uniq(nums) // better readability

// import only what you need
import uniq from "loadash/uniq"
const nums = [1, 2, 2, 3, 1, 4]
let res = uniq(nums)

Source

Also in JavaScript: