The utils of Front-End
npm i @a0znpm/feutils -D
// no tree-saking ??? TODO
import {luhnCheck} from '@a0nznpm/feutils'
luhnCheck()
import luhnCheck from '@a0nznpm/feutils/src/luhnCheck'
luhnCheck()
// no tree-saking ??? TODO
const {luhnCheck} = '@a0nznpm/feutils'
luhnCheck()