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-rw-r--r--gnu/packages/javascript.scm6
1 files changed, 5 insertions, 1 deletions
diff --git a/gnu/packages/javascript.scm b/gnu/packages/javascript.scm
index 8731a44927..e7dcd7962d 100644
--- a/gnu/packages/javascript.scm
+++ b/gnu/packages/javascript.scm
@@ -117,7 +117,11 @@
(let ((minified (open-pipe* OPEN_READ "uglify-js" file)))
(call-with-output-file installed
(lambda (port)
- (dump-port minified port)))))
+ (dump-port minified port)))
+
+ (let ((exit (close-pipe minified)))
+ (unless (zero? exit)
+ (error "dear, uglify-js failed" exit)))))
(else
(install-file file (dirname installed))))))
(find-files "."))