We have a good sized clojurescript SPA in production, and it has been a real joy to work with.  We are using Reagent, which when coupled with FigWheel[0] goes a long way toward mitigating slow startup, as well as &quot;tooling&quot; issues in general.  The live reloading is a fantastic experience.<p>Sourcemaps have been a big help for debugging in general, though we have had several instances of bugs taking a bit of effort to get to the bottom of because of some deep javascript stacktraces -- for the most part the java side of the compiler hasn&#x27;t been a big deal.  Many of these have been type related bugs, so we&#x27;re looking into adding some schemas[1] going forward where it seems appropriate.  Despite those issues, it has overall been a huge productivity boost.  We&#x27;ve also witnessed this story only improving with time.<p>The community truly is fantastic.  Lots of very smart, friendly folks doing interesting things.<p>[0] <a href="https:&#x2F;&#x2F;github.com&#x2F;bhauman&#x2F;lein-figwheel" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;bhauman&#x2F;lein-figwheel</a>
[1] <a href="https:&#x2F;&#x2F;github.com&#x2F;Prismatic&#x2F;schema" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Prismatic&#x2F;schema</a>