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

repos/effect/scripts/bundle-compare-selected.sh

@@ -0,0 +1,97 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Compare bundle size for explicitly selected entry files against a base ref.
+#
+# Usage:
+#   scripts/bundle-compare-selected.sh [--base <ref>] [--keep-base] <file...>
+#
+# The selected files are copied into the base worktree before measurement so the
+# report isolates source changes instead of fixture content changes.
+
+usage() {
+  echo "Usage: scripts/bundle-compare-selected.sh [--base <ref>] [--keep-base] <file...>"
+}
+
+BASE_REF="main"
+KEEP_BASE_WORKTREE=false
+FILES=()
+
+while [ "$#" -gt 0 ]; do
+  case "$1" in
+    -b | --base)
+      if [ "$#" -lt 2 ]; then
+        usage
+        exit 1
+      fi
+      BASE_REF="$2"
+      shift 2
+      ;;
+    --keep-base)
+      KEEP_BASE_WORKTREE=true
+      shift
+      ;;
+    -h | --help)
+      usage
+      exit 0
+      ;;
+    --)
+      shift
+      FILES+=("$@")
+      break
+      ;;
+    -*)
+      echo "Unknown option: $1" >&2
+      usage
+      exit 1
+      ;;
+    *)
+      FILES+=("$1")
+      shift
+      ;;
+  esac
+done
+
+if [ "${#FILES[@]}" -eq 0 ]; then
+  usage
+  exit 1
+fi
+
+ROOT="$(git rev-parse --show-toplevel)"
+BASE_DIR="$ROOT/tmp/bundle-base"
+BASE_STAMP="$BASE_DIR/.bundle-build-stamp"
+
+cleanup() {
+  if [ "$KEEP_BASE_WORKTREE" = "false" ] && [ -d "$BASE_DIR" ]; then
+    git worktree remove --force "$BASE_DIR"
+  fi
+}
+
+trap cleanup EXIT
+
+cd "$ROOT"
+
+echo "Building current checkout..."
+pnpm build
+
+BASE_COMMIT="$(git rev-parse "$BASE_REF")"
+
+if [ -d "$BASE_DIR/packages/effect/dist" ] &&
+  [ -f "$BASE_STAMP" ] &&
+  [ "$(git -C "$BASE_DIR" rev-parse HEAD)" = "$BASE_COMMIT" ] &&
+  [ "$(cat "$BASE_STAMP")" = "$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)
+  printf "%s\n" "$BASE_COMMIT" > "$BASE_STAMP"
+fi
+
+node packages/tools/bundle/src/bin.ts compare-selected \
+  --base-dir "$BASE_DIR" \
+  "${FILES[@]}"