diff --git a/dev-src/picture_processor/repl.cljs b/dev-src/picture_processor/repl.cljs
new file mode 100644
index 0000000..5258c96
--- /dev/null
+++ b/dev-src/picture_processor/repl.cljs
@@ -0,0 +1,8 @@
+(ns picture-processor.repl
+  (:require weasel.repl))
+
+(defn start
+  "Start the Weasel repl to connect to vim-fireplace"
+  [port]
+  (aset js/global "WebSocket" (js/require "ws"))
+  (weasel.repl/connect (str "ws://localhost:" port)))