Copying file in node.js build script

Question

Im playing around with a javascript project, it uses a node build script.

It syncing some folders into a built folder via

try {
  fs.statSync('built/imgs');
} catch(err) {
  if (err.code=='ENOENT') fs.symlinkSync('../imgs', 'built/imgs');
  else throw err;
}

Whats the corresponding fs command to get a real copy of the files to the built folder?

Answer 1

There is no function in the fs object that will copy a whole directory. There's not even one that will copy a whole file.

However, this is a quick and easy way to copy one file.

var fs = require('fs');

fs.createReadStream('input_filename').pipe(fs.createWriteStream('output_filename'));

Now you just need to get a directory list. You would use the fs.readdir or fs.readdirSync for that.

So to copy a directory to another you might do something like this:

var dir = fs.readdirSync('.');
for (var i=0; i < dir.length; i++) {
    fs.createReadStream(dir[i]).pipe(fs.createWriteStream("newpath/"+dir[i]));
}