node.js - Async to sync in nodejs -

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i using library getmac mac address of server on nodejs running. api mac address async want use sync call. possible without using libraries sync, deasync etc?

//async api require('getmac').getmac(function(err,macaddress){ if (err) throw err console.log(macaddress) })

you can use package

var done = false; require('getmac').getmac(function(err,macaddress) {      if (err) throw err      console.log(macaddress)     done = true; }); require('deasync').loopwhile(function(){return !done;});

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