Could not write JavaScript nil

[NZaleski]

Every time I try to run lein cljsbuild once I get an error that Could not write JavaScript nil

Here is what I have been doing.

1. Create a new project called finance lein new app finance
2. Update the project.clj file with dependencies, cljsbuild, plugin and main spec (see attached)
3. Run lein deps and this works
4. Rnu lein run and that also works, spitting out 'Hello World' in the console.
5. Try to run lein cljsbuild once and then I get this error that Could not write JavaScript nil

project.txt

[mneise]

The exception you are getting is thrown by the ClojureScript compiler and isn't caused by lein-cljsbuild. You get the exception because you don't have any ClojureScript files in your project. To solve this problem you need to add a core.cljs file to the src/finance/ directory.