Convert zxing java lib to node.js module

Currently i'm using ZXing library in node.js (node-zxing) to decode PDF417 and others barcodes. However this calls run a .jar file and takes up to 3 seconds processing the image. I need to use zxing core lib in node.js directly to improve the efficiency of my program. Decoding desired time: 1 second or less (no .jar execution) Attached Project Files node-zxing example: var qrdecoder = require('./node-zxing'); var path = "./[login to view URL]"; [login to view URL](path, function(err, out) { //out is a string with the encoded data [login to view URL](err,out); } ); node-zxing/[login to view URL] .jar execution: decode: function(filePath, cb) { exec('java -cp '+[login to view URL]([login to view URL], 'javase', 'javase'+defaults.ZXingVersion+'.jar')+cpSeparator+[login to view URL]([login to view URL], 'core', 'core'+defaults.ZXingVersion+'.jar')+' [login to view URL]'+commandLineOptions+''+filePath, function(err, stdout, stderr){ NODE-ZXING LIB [login to view URL] ZXING LIB [login to view URL] ZXING CORE [login to view URL]