Call stack exceeded for large data generation

[iongion]

I am using factory-girl together with Faker.js to generate sane large amounts of data, data is generated in an async manner, so i get the "call stack exceeded" message from factory-gril, the code bellow avoids that:

Avoid exceeding call stack:

    asyncForEach(hash.keys(attrs), function(key, cb) {
      var fn = attrs[key];
      if(typeof fn === 'function') {
        fn(function(value) {
          attrs[key] = value;
          setImmediate(function() { cb() })
        });
      } else {
        setImmediate(function() { cb() })
      }
    }, function() {
      var doc = new model();
      var key;
      for(key in attrs) {
        if(attrs.hasOwnProperty(key)) {
          doc[key] = attrs[key];
        }
      }
      setImmediate(function() { callback(doc) })
    });

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