1 files changed, 35 insertions, 0 deletions
diff --git a/scripts/frontend/compare_css_compilers.sh b/scripts/frontend/compare_css_compilers.sh
new file mode 100755
index 00000000000..faf20871678
--- /dev/null
+++ b/scripts/frontend/compare_css_compilers.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+set -euo pipefail
+IFS=$'\n\t'
+
+if [ ! -d "glfm_specification" ] || [ ! -f "GITALY_SERVER_VERSION" ]; then
+  echo 'Please run this from the gitlab root folder with `./scripts/frontend/compare_css_compilers.sh`'
+  exit 1
+fi
+
+function clean_up {
+  rm -rf public/assets
+  rm -rf app/assets/builds/*
+  rm -rf tmp/cache/assets
+}
+
+rm -rf tmp/css_compare
+clean_up
+
+export SKIP_YARN_INSTALL=1
+
+echo "Compiling with sassc-rails"
+export USE_NEW_CSS_PIPELINE=0
+time bin/rails assets:precompile
+scripts/frontend/clean_css_assets.mjs public/assets tmp/css_compare/sassc-rails
+
+clean_up
+
+export USE_NEW_CSS_PIPELINE=1
+echo "Compiling with dart-sass"
+time bin/rails assets:precompile
+scripts/frontend/clean_css_assets.mjs public/assets tmp/css_compare/cssbundling
+
+clean_up
+
+echo 'You now can run `diff -u tmp/css_compare/sassc-rails tmp/css_compare/cssbundling` to diff the two'