util: access process states lazily in debuglog

`debuglog()` depends on `process.pid` and `process.env.NODE_DEBUG`,
so it needs to be called lazily in top scopes of internal modules
that may be loaded before these run time states are allowed to
be accessed. This patch makes its implementation lazy by default,
the process states are only accessed when the returned debug
function is called for the first time.

PR-URL: https://github.com/nodejs/node/pull/27281
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>

1 files changed, 1 insertions, 8 deletions

diff --git a/lib/internal/worker/io.js b/lib/internal/worker/io.js
index 04f8f9ad597..8b7aedd39d0 100644
--- a/lib/internal/worker/io.js
+++ b/lib/internal/worker/io.js
@@ -21,14 +21,7 @@ const {
 const { Readable, Writable } = require('stream');
 const EventEmitter = require('events');
 const { inspect } = require('internal/util/inspect');
-
-let debuglog;
-function debug(...args) {
-  if (!debuglog) {
-    debuglog = require('internal/util/debuglog').debuglog('worker');
-  }
-  debuglog(...args);
-}
+const debug = require('internal/util/debuglog').debuglog('worker');
 
 const kIncrementsPortRef = Symbol('kIncrementsPortRef');
 const kName = Symbol('kName');