Don't print expr val on nil

MTrost · Aug 6, 2021 · efa64a6 · efa64a6
1 parent af9cc6f
commit efa64a6
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/bb.edn b/bb.edn
@@ -1,4 +1,5 @@
-{:tasks
+{:paths ["script"]
+ :tasks
  {:requires ([babashka.fs :as fs])
   clean (fs/delete-tree "out")
   watch (do (shell "npx shadow-cljs --force-spawn watch modules"))
@@ -13,6 +14,7 @@
                      (str "#!/usr/bin/env node\n\n" (slurp "out/nbb_main.js")))
                (shell "chmod +x out/nbb_main.js")
                (run! fs/delete (fs/glob "out" "**.map")))}
+  test nbb-tests/main
   run (shell "out/nbb_main.js test.cljs")
   publish {:depends [release]
            :task (do (shell "npm publish")

diff --git a/src/nbb/main.cljs b/src/nbb/main.cljs
@@ -40,7 +40,7 @@
         (-> (nbb/eval-string {:require require
                               :script-dir path} source)
             (.then (fn [val]
-                     (when expr
+                     (when (and expr (some? val))
                        (prn val))
                      val))))
       (.error js/console "Usage: nbb <script> or nbb -e <expr>."))))