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I'm using Fluxible [0], with immutable.js [1], and I just create my stores using createImmutableStore from fluxible-immutable-utils [2]. Since you're keeping the state for each store in context._state it'll just call context._state.toJS() when you're dehydrating, and Immutable.fromJS(payload) when rehydrating.

[0] http://fluxible.io/ [1] http://facebook.github.io/immutable-js/ [2] https://github.com/yahoo/fluxible-immutable-utils/

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Thanks, fluxible looks like it might be the best isomorphic solution available right now, and the fromJS() and toJS() functions are what I would need.

I guess I was initially hoping to use immutable data for the performance benefit; being able to implement a fast shouldComponentUpdate() with a simple equality check.

But I wonder how toJS() and fromJS() performance-wise... if they have to create new objects by deeply copying the objects, maybe that would be just as bad as doing no shouldComponentUpdate optimization.

I guess I'll just stick to the "premature optimization is the root of all evil" concept, and try to get something working with carefully mutable data first.

Oh, no no. That toJS() and fromJS() only happens on the initial load, it's pretty fast. Using immutable.js you can get way better performance and you don't have to worry about data ever changing on you unexpectedly.

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