How to write a file from an ArrayBuffer in JS

Question

I am trying to write a file uploader for Meteor framework. The principle is to split the fileon the client from an ArrayBuffer in small packets of 4096 bits that are sent to

Answer 1

Saving the file was as easy as creating a new Buffer with the Uint8Array object :

// chunk is the Uint8Array object
fs.appendFile(path, Buffer.from(chunk), function (err) {
    if (err) {
      fut.throw(err);
    } else {
      fut.return(chunk.length);
    }
});