for node.js, save text to file function

saveTextToFile.js

var fs = require('fs')
function saveTextToFile(filename, text) {
    // assumes fs exists
    fs.writeFile(filename, text, function(err) {
        if(err) {
            console.log(err);
        } else {
            console.log(filename + " - SAVE OK");
        }
        }); 
}