javascript - Node base64 encode doesn't give whole string -

good day,

i having weird issue node, encoding file base64 , albeit works of pdfs encoding, 1 in particular doesn't output whole base64 string.

the actual b64 string starts this: "jvberi0xljmkjf////8kniawig9i..." "jvberi0xljmk"

here code:

function sendpdf() {     // grab final pdf     require('fs').readfile(transaction.deliverable, function (err, data) {         if (err) {             console.log(err);             log(2, "couldn't read: " + transaction.deliverable);         } else {             transaction.deliverable = new buffer(data, 'binary').tostring('base64');             //transaction.deliverable = data.tostring('base64');             console.log(transaction.deliverable);  } 

the commented out line attempt. transaction structure is:

function transaction(snapshot) {     var data         = snapshot.val();     this.tid         = snapshot.key();     this.request     = data.request;     this.pages       = [];     this.filecount   = 0;     this.deliverable = null;     this.filename    = ""; } 

this transaction simple stores information pull firebase important var, .deliverable string path of pdf need encode , send.

i don't read errors when happens, , next transaction goes through code block fine, giving full base64 string.

i curious if tostring() interpolating base64 string, thought have had larger problems earlier.

any ideas? can put on hold , move on work love fix this.. thank you.