From d17abf463acabf9e1e43b91200f18efd34e91f62 Mon Sep 17 00:00:00 2001
From: JJ Kasper <jj@jjsweb.site>
Date: Wed, 21 Feb 2024 20:53:16 -0800
Subject: [PATCH] Update experimental bundle flag (#11187)

Makes bailing from grouping logic more explicit
---
 .changeset/kind-pears-attend.md |  5 +++
 packages/next/src/utils.ts      | 65 +++++++++++++++++----------------
 2 files changed, 39 insertions(+), 31 deletions(-)
 create mode 100644 .changeset/kind-pears-attend.md

diff --git a/.changeset/kind-pears-attend.md b/.changeset/kind-pears-attend.md
new file mode 100644
index 000000000..f8ed93676
--- /dev/null
+++ b/.changeset/kind-pears-attend.md
@@ -0,0 +1,5 @@
+---
+"@vercel/next": patch
+---
+
+Update experimental bundle flag
diff --git a/packages/next/src/utils.ts b/packages/next/src/utils.ts
index 5eb9a34cf..f602c43da 100644
--- a/packages/next/src/utils.ts
+++ b/packages/next/src/utils.ts
@@ -1570,43 +1570,46 @@ export async function getPageLambdaGroups({
       opts = { ...vercelConfigOpts, ...opts };
     }
 
-    let matchingGroup = groups.find(group => {
-      const matches =
-        !experimentalAllowBundling &&
-        group.maxDuration === opts.maxDuration &&
-        group.memory === opts.memory &&
-        group.isPrerenders === isPrerenderRoute &&
-        group.isExperimentalPPR === isExperimentalPPR;
+    let matchingGroup = experimentalAllowBundling
+      ? undefined
+      : groups.find(group => {
+          const matches =
+            group.maxDuration === opts.maxDuration &&
+            group.memory === opts.memory &&
+            group.isPrerenders === isPrerenderRoute &&
+            group.isExperimentalPPR === isExperimentalPPR;
 
-      if (matches) {
-        let newTracedFilesSize = group.pseudoLayerBytes;
-        let newTracedFilesUncompressedSize = group.pseudoLayerUncompressedBytes;
+          if (matches) {
+            let newTracedFilesSize = group.pseudoLayerBytes;
+            let newTracedFilesUncompressedSize =
+              group.pseudoLayerUncompressedBytes;
 
-        for (const newPage of newPages) {
-          Object.keys(pageTraces[newPage] || {}).map(file => {
-            if (!group.pseudoLayer[file]) {
-              const item = tracedPseudoLayer[file] as PseudoFile;
+            for (const newPage of newPages) {
+              Object.keys(pageTraces[newPage] || {}).map(file => {
+                if (!group.pseudoLayer[file]) {
+                  const item = tracedPseudoLayer[file] as PseudoFile;
 
-              newTracedFilesSize += item.compBuffer?.byteLength || 0;
-              newTracedFilesUncompressedSize += item.uncompressedSize || 0;
+                  newTracedFilesSize += item.compBuffer?.byteLength || 0;
+                  newTracedFilesUncompressedSize += item.uncompressedSize || 0;
+                }
+              });
+              newTracedFilesSize +=
+                compressedPages[newPage].compBuffer.byteLength;
+              newTracedFilesUncompressedSize +=
+                compressedPages[newPage].uncompressedSize;
             }
-          });
-          newTracedFilesSize += compressedPages[newPage].compBuffer.byteLength;
-          newTracedFilesUncompressedSize +=
-            compressedPages[newPage].uncompressedSize;
-        }
 
-        const underUncompressedLimit =
-          newTracedFilesUncompressedSize <
-          MAX_UNCOMPRESSED_LAMBDA_SIZE - LAMBDA_RESERVED_UNCOMPRESSED_SIZE;
-        const underCompressedLimit =
-          newTracedFilesSize <
-          lambdaCompressedByteLimit - LAMBDA_RESERVED_COMPRESSED_SIZE;
+            const underUncompressedLimit =
+              newTracedFilesUncompressedSize <
+              MAX_UNCOMPRESSED_LAMBDA_SIZE - LAMBDA_RESERVED_UNCOMPRESSED_SIZE;
+            const underCompressedLimit =
+              newTracedFilesSize <
+              lambdaCompressedByteLimit - LAMBDA_RESERVED_COMPRESSED_SIZE;
 
-        return underUncompressedLimit && underCompressedLimit;
-      }
-      return false;
-    });
+            return underUncompressedLimit && underCompressedLimit;
+          }
+          return false;
+        });
 
     if (matchingGroup) {
       matchingGroup.pages.push(page);