Batching of external events

[syranide]

React batches all component updates if they become dirty during an event-callback (events are also batched). However, this is not exposed for use with external events, such as setTimeout, addEventHandler, AJAX-replies, non-React DOM events or any other events, and it seems only natural that it should extend to those too.

I see two obvious solutions:

Export React.batchedUpdates(callback, param)

setTimeout(function() {
  React.batchedUpdates(function() {
    ...
  }.bind(this));
});

setTimeout(React.batchedUpdates.bind(null, function() {
  ...
}.bind(this));

Export a callback factory React.batchedCallback(callback, args...)

setTimeout(React.batchedCallback(function() {
  ...
}.bind(this));

Thoughts?

I'm guessing this belongs with #326

[plievone]

See also #906

[syranide]

Thanks @plievone, so this is a duplicate of #906, closing.