Sleep with a promise

sleep.coffee

sleep =  (ms) ->
  new Promise (resolve, reject) ->
    try 
      setTimeout(resolve, ms) 
    catch e 
      reject(e)
    return

sleep(1000).then( -> console.log "hola" )

sleep.js

const sleep = (ms) =>
  new Promise( (resolve, reject) => {
    	try { setTimeout(resolve, ms) } catch (e) { reject(e) }
  })

use_with_async.js

async function use() {
    console.log("before sleep");
    await sleep(2000);
    console.log("after sleep");
}

use();