REPL Options

ClojureScript REPLs can take nearly all the same options that can be supplied to cljs.closure/build, for details see Compiler Options. This page documents additional supported options.

• :analyze-path
• :def-emits-var
• :repl-verbose
• :watch
• :watch-fn

analyze-path

Sets a source path to analyze upon REPL initialization so that, if it connects to an already-running JavaScript environment, symbols for any previously loaded namespaces are available.

:analyze-path "src"

def-emits-var

Sets whether def (and derived) forms evaluate to Vars (if set to true) or the def init value (if false). Only affects forms evaluated at the REPL; compiled code behaves as if set to false. Default value is true. (Currently available only in master.)

:def-emits-var false

repl-verbose

Enable verbose reporting for the REPL. Useful for debugging. Defaults to false.

:repl-verbose true

watch

Watch a source directory for recompilation to avoid spinning up an additional JVM.

:watch "src"

watch-fn

:watch-fn (fn [] (println "built!"))

A function of no arguments to run after a successful build.