diff --git a/dodona-tested.dockerfile b/dodona-tested.dockerfile
index f0ceeb8..74a6c2b 100644
--- a/dodona-tested.dockerfile
+++ b/dodona-tested.dockerfile
@@ -68,6 +68,15 @@ RUN <<EOF
         xxd \
         shellcheck
 
+    # JavaScript dependencies
+    bash -c 'set -o pipefail && curl -fsSL https://deb.nodesource.com/setup_22.x | bash -'
+    apt-get install -y --no-install-recommends nodejs
+    npm install -g eslint@8.57 abstract-syntax-tree@2.22
+
+    # TypeScript dependencies
+    npm install -g typescript@5.6.3 tsx@4.19.2
+    npm install -g @types/node @typescript-eslint/parser @typescript-eslint/eslint-plugin
+
     # Haskell dependencies
     apt-get install -y --no-install-recommends \
         hlint \
@@ -81,11 +90,6 @@ RUN <<EOF
     cabal update
     cabal v1-install --global aeson
 
-    # JavaScript dependencies
-    bash -c 'set -o pipefail && curl -fsSL https://deb.nodesource.com/setup_22.x | bash -'
-    apt-get install -y --no-install-recommends nodejs
-    npm install -g eslint@8.57 abstract-syntax-tree@2.22
-
     # C# dependencies
     curl https://packages.microsoft.com/config/debian/11/packages-microsoft-prod.deb --output packages-microsoft-prod.deb
     dpkg -i packages-microsoft-prod.deb