child_process,cluster: allow using V8 serialization API

Add an `serialization` option that allows child process IPC to
use the (typically more powerful) V8 serialization API.

Fixes: https://github.com/nodejs/node/issues/10965

PR-URL: https://github.com/nodejs/node/pull/30162
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/internal/bootstrap/pre_execution.js b/lib/internal/bootstrap/pre_execution.js
index 80ac97ee45..e58293e616 100644
--- a/lib/internal/bootstrap/pre_execution.js
+++ b/lib/internal/bootstrap/pre_execution.js
@@ -326,7 +326,11 @@ function setupChildProcessIpcChannel() {
     // Make sure it's not accidentally inherited by child processes.
     delete process.env.NODE_CHANNEL_FD;
 
-    require('child_process')._forkChild(fd);
+    const serializationMode =
+      process.env.NODE_CHANNEL_SERIALIZATION_MODE || 'json';
+    delete process.env.NODE_CHANNEL_SERIALIZATION_MODE;
+
+    require('child_process')._forkChild(fd, serializationMode);
     assert(process.send);
   }
 }