SOURCE

const actio = {
    1:['nv','n'],
    2:['nam','m'],
    default:['t','t']
}

function on(type){
   const a = actio[type]
console.log('on(1)',a)
}

on(1)


let arr = [12,45,97,9797,564,134,45642]
console.log(arr)
let set = new Set(arr)
let a = Array.from(set, item => {
    console.log(item) 
    return item+1
    })
console.log('122',a) // [ 13, 46, 98, 9798, 565, 135, 45643 ]