diff --git a/src/Psb/Main.hs b/src/Psb/Main.hs
index b62f719..2ae2e21 100644
--- a/src/Psb/Main.hs
+++ b/src/Psb/Main.hs
@@ -21,6 +21,7 @@ import qualified Development.Shake as Shake
 import Development.Shake.FilePath ((</>))
 import qualified Development.Shake.FilePath as FP
 import Templates
+import Text.Megaparsec (errorBundlePretty)
 import Types
 import Utilities.Action (getPublishedPosts, isDraft', markdownToHtml, markdownToPost, now, psbProgress)
 import qualified Utilities.CSS as CSS
@@ -92,9 +93,15 @@ css_resources =
 js_resources :: Rules ()
 js_resources =
   map (outputDir </>) jsGlobs |%> \target -> do
-    src <- Shake.readFile' $ FP.dropDirectory1 target
-    -- TODO: write to fingerprinted location as well
-    Shake.writeFileChanged target $ JS.minify src
+    let src_file = FP.dropDirectory1 target
+    src <- Shake.readFile' $ src_file
+
+    let tokenization = JS.toTokens src_file src
+    case tokenization of
+      Left e -> error $ "Attempt to tokenize javascript file failed with: " <> errorBundlePretty e
+      Right tokens ->
+        -- TODO: write to fingerprinted location as well
+        Shake.writeFileChanged target $ foldMap JS.displayToken $ JS.minify $ tokens
 
 -- there's probably a better way of doing this that allows for the target's origin file extension to get passed in but for now we're doing brute force
 postsRule :: Rules ()