Writing large files with Node.js

Question

I\'m writing a large file with node.js using a writable stream:

var fs     = require(\'fs\');
var stream = fs.createWriteStream(\'someFile.txt\', { flags : \         


        

Answer 1

If you do not happen to have an input stream you cannot easily use pipe. None of the above worked for me, the drain event doesn't fire. Solved as follows (based on Tylers answer):

var lines[]; // some very large array
var i = 0;

function write() {
    if (i < lines.length)  {
        wstream.write(lines[i]), function(err){
            if (err) {
                console.log(err);
            } else {
                i++;
                write();
            }
        });
    } else {
        wstream.end();
        console.log("done");
    }
};
write();