Almost Node.js‘s libraries are structured asynchronous.

But some app want to returning synchronous.

Below link maybe help you to change function async to sync.

http://alexeypetrushin.github.io/synchronize/docs/index.html


// change to async to sync
var sync = require('synchronize');
sync.fiber(...);
sync(conn, 'query');// conn means mysql connector here.



// original(async)
conn.query([SOME QUERY], function(err, rows, fields) {
if (err) throw err;
console.log('The solution is: ', rows[0].solution);
});



// new(sync)
try{
var rows = conn.query([SOME QUERY]);
console.log('The solution is: ', rows[0].solution);
}catch (err){
throw err;
}