From d204f0dd55e99134e220fa1993bc75cbfc429115 Mon Sep 17 00:00:00 2001
From: Mason Daugherty <mason@langchain.dev>
Date: Mon, 18 Aug 2025 17:33:27 -0400
Subject: [PATCH] feat(infra): add skip-preview tag check in Vercel deployment
 script (#32600)

Having vercel attempt to deploy on each commit (even if unrelated to
docs) was getting annoying. Options:

- `[skip-preview]`
- `[no-preview]`
- `[skip-deploy]`

Full example: `fix(core): resolve memory leak [no-preview]`
---
 docs/ignore-step.sh | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/docs/ignore-step.sh b/docs/ignore-step.sh
index 2532c4c48b1..5e075196bf5 100755
--- a/docs/ignore-step.sh
+++ b/docs/ignore-step.sh
@@ -5,6 +5,14 @@ echo "VERCEL_GIT_COMMIT_REF: $VERCEL_GIT_COMMIT_REF"
 echo "VERCEL_GIT_REPO_OWNER: $VERCEL_GIT_REPO_OWNER"
 echo "VERCEL_GIT_REPO_SLUG: $VERCEL_GIT_REPO_SLUG"
 
+echo "Checking for skip-preview tags..."
+COMMIT_MESSAGE=$(git log -1 --pretty=%B)
+echo "Commit message: $COMMIT_MESSAGE"
+if [[ "$COMMIT_MESSAGE" == *"[skip-preview]"* ]] || [[ "$COMMIT_MESSAGE" == *"[no-preview]"* ]] || [[ "$COMMIT_MESSAGE" == *"[skip-deploy]"* ]]; then
+    echo "🛑 Skip-preview tag found in commit message - skipping preview deployment"
+    exit 0
+fi
+
 
 if  { \
         [ "$VERCEL_ENV" == "production" ] || \
@@ -13,10 +21,10 @@ if  { \
         [ "$VERCEL_GIT_COMMIT_REF" == "v0.2" ] || \
         [ "$VERCEL_GIT_COMMIT_REF" == "v0.3rc" ]; \
     } && [ "$VERCEL_GIT_REPO_OWNER" == "langchain-ai" ]
-then 
+then
      echo "✅ Production build - proceeding with build"
      exit 1
-fi 
+fi
 
 
 echo "Checking for changes in docs/"