diff --git a/.config/build.sh b/.config/build.sh
new file mode 100644
index 0000000..8693842
--- /dev/null
+++ b/.config/build.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+set -e
+
+rm -rf .build
+mkdir -p ./.build
+
+cd ~/$REPL_SLUG/
+npm install typescript
+npm install
+npx tsc