Template snippet rendered differently on client and server

[clyfe]

I have a (rum) hiccup-ish snippet in a template, that is rendered differently by the server side code than it is in the client side code, resulting in a React warning.

Sample code

;; component in cljc
(rum/defc app []
  [:input#topics {:type "text"}])

;; server in clj
(rum/render-html (components/app))

;; client in cljs
(rum/mount (components/app) node)

Resulting warning

Warning: React attempted to reuse markup in a container but the checksum was invalid. This generally means that you are using server rendering and the markup generated on the server was not what the client was expecting. React injected new markup to compensate which works but you have lost many of the benefits of server rendering. Instead, figure out why the markup being generated is different on the client or server:

 (client) <input type="text" id="topi
 (server) <input id="topics" type="te

Some thoughts

Potential fix might be achieved by using something like https://github.com/amalloy/ordered on both clj and cljs sides, or sorted-map.

[nilpunning]

I too have run into this. Besides this minor issue switching my site from Reagent + Nashorn to Rum server side rendering is much faster and streamlined, way to go!

[tonsky]

Fixed in 0.8.4