Merge commit '36c66dd290d3ce6eb1ccd310d0c658d4a32bb8eb' as 'repos/effect'

repos/effect/scripts/bundle-compare.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Runs the CI bundle-size comparison locally (see the Bundle job in
+# .github/workflows/check.yml): builds the current checkout, builds the base
+# ref in a cached git worktree under tmp/, then compares fixture bundle sizes.
+#
+# Usage: scripts/bundle-compare.sh [base-ref]   (default: main)
+#
+# The base worktree is reused across runs while it points at the same commit.
+# Remove it with: git worktree remove --force tmp/bundle-base
+
+BASE_REF="${1:-main}"
+ROOT="$(git rev-parse --show-toplevel)"
+BASE_DIR="$ROOT/tmp/bundle-base"
+OUTPUT_PATH="$ROOT/tmp/bundle-stats.txt"
+
+cd "$ROOT"
+
+echo "Building current checkout..."
+pnpm build
+
+BASE_COMMIT="$(git rev-parse "$BASE_REF")"
+
+if [ -d "$BASE_DIR/packages/effect/dist" ] && [ "$(git -C "$BASE_DIR" rev-parse HEAD)" = "$BASE_COMMIT" ]; then
+  echo "Reusing built base worktree at $BASE_DIR ($BASE_REF @ ${BASE_COMMIT:0:8})"
+else
+  if [ -d "$BASE_DIR" ]; then
+    git worktree remove --force "$BASE_DIR"
+  fi
+  echo "Creating base worktree at $BASE_DIR ($BASE_REF @ ${BASE_COMMIT:0:8})"
+  git worktree add --detach "$BASE_DIR" "$BASE_COMMIT"
+  echo "Building base checkout..."
+  (cd "$BASE_DIR" && pnpm install && pnpm build)
+fi
+
+node packages/tools/bundle/src/bin.ts compare \
+  --base-dir "$BASE_DIR/packages/tools/bundle/fixtures" \
+  --output-path "$OUTPUT_PATH"
+
+echo
+cat "$OUTPUT_PATH"