thunk vs async thunk

thunks.js

/* —— thunks
 * A nullary function (no arguments) that returns closured value(s).
 * Basically a token or wrapper that represents a specific value.
 */

const add = (x, y) => x + y

const thunk = () => add(6, 3)

thunk() // 8

/* —— asynchronous thunks
 * A nullary function that when passed a callback function returns a value.
 */

const addAsync = (x, y, cb) => {
  setTimeout(() => {
    cb(x + y)
  }, 1000)
}

const asyncThunk = (cb) => addAsync(6, 2, cb)

asyncThunk(function(value) {
  console.log(value) // 8
})