JS 越来越棒了

dev-js-like-a-boss.md

soon

const street = data && data.user && data.user.address && data.user.address.street;

// better
const street = data.user?.address?.street

value !== null && value !== undefined ? value : 'default value'

// better
value ?? 'default value'

let result = "hello"
  |> doubleSay
  |> capitalize
  |> exclaim;

result //=> "Hello, hello!"`