diff --git a/sourcemap-reader/run-dev.sh b/sourcemap-reader/run-dev.sh
new file mode 100755
index 000000000..3c80807dd
--- /dev/null
+++ b/sourcemap-reader/run-dev.sh
@@ -0,0 +1,3 @@
+#!/bin/zsh
+
+MAPPING_WASM=./mappings.wasm npm start
\ No newline at end of file