process: improve cwd performance

This caches the current working directory and only updates the variable
if `process.chdir()` is called.

PR-URL: https://github.com/nodejs/node/pull/27224
Reviewed-By: John-David Dalton <john.david.dalton@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/internal/bootstrap/node.js b/lib/internal/bootstrap/node.js
index 65b9c403af..69fe4be266 100644
--- a/lib/internal/bootstrap/node.js
+++ b/lib/internal/bootstrap/node.js
@@ -73,6 +73,7 @@ if (isMainThread) {
   const wrapped = mainThreadSetup.wrapProcessMethods(rawMethods);
   process.umask = wrapped.umask;
   process.chdir = wrapped.chdir;
+  process.cwd = wrapped.cwd;
 
   // TODO(joyeecheung): deprecate and remove these underscore methods
   process._debugProcess = rawMethods._debugProcess;
@@ -86,11 +87,11 @@ if (isMainThread) {
   process.abort = workerThreadSetup.unavailable('process.abort()');
   process.chdir = workerThreadSetup.unavailable('process.chdir()');
   process.umask = wrapped.umask;
+  process.cwd = rawMethods.cwd;
 }
 
 // Set up methods on the process object for all threads
 {
-  process.cwd = rawMethods.cwd;
   process.dlopen = rawMethods.dlopen;
   process.uptime = rawMethods.uptime;