A Meteor package to animate data context changes. Demo.
Surround something with the {{#reveal}} ... {{/reveal}} helper to animate it when the data context changes.
Supply a specific data context as a positional argument
{{#reveal something}}...{{/reveal}}
{{#reveal transition="fade slide"}}
Supply a CSS class list to the transition property to control which transition types are going to be used. fade and slide are default, their definition is in reveal.less for reference so that you may develop your own. To turn off transitions, simply pass an empty string.
When supplying a custom transition, use the data parameter to ensure the data context is the intended value instead of the parameters (hash) object itself.
{{#reveal transition="fade slide" data=something}}