New global state methods to support SSR rehydration

[deamme]

Right now there is no way to rehydrate your server-side state changes to the client. I've added new global state methods to solve this issue so we can use Laco with server-side rendering. I've also added the new methods to the documentation with a new rehydration section.

[jhsware]

Most people won't realise that you need the following to avoid potential JS-injection attacks:

const hydratedState = JSON.stringify(encodeURIComponent(JSON.stringify(storeState)))

Then you assign that string to a variable in your template and decode it like this:

const rehydratedState = JSON.parse(decodeURIComponent(hydratedState))

So perhaps it is a good idea to create specific hydrate/rehydrate methods that enforce this?

[deamme]

@jhsware Thanks for the feedback! I think it's a good idea - although I don't want to bloat the library - the Redux SSR guide mentions the security implications and solves it by doing JSON.stringify(preloadedState).replace(/</g, '\\u003c'). I can warn the user though in the documentation