Transfer data from one Firebase database to another

transfer.js

var client = require('firebase-tools');

function transfer(path, options) {
  var fromDb = options.fromDb;
  var toDb = options.toDb;
  var output = options.output;
  client.data.get(path, { firebase: fromDb, output: output })
    .then(function(data) {
      return client.data.set(path, output, { firebase: toDb, confirm: true });
    })
    .then(function(data) {
      console.log('transferred!');
      process.exit(1);
    })
    .catch(function(error) {
      console.log(error);
      process.exit(2);
    });
}

transfer('/', { fromDb: '<from-db>', toDb: '<to-db>',  output: 'test.json' });

@cmcowan I was wondering if you had any luck with this. I have a dataset over 700MB that I'd like to periodically copy from one project to another and found that both firebase-import and firebase-streaming-import would fail after several hours and GBs of usage.