lib: explicitly initialize debuglog during bootstrap

This patch splits the implementation of util.debuglog into a
separate file and explicitly initialize it during pre-execution
since the initialization depends on environment variables.
Also delays the call to `debuglog` in modules that are loaded during
bootstrap to make sure we only access the environment variable
during pre-execution.

PR-URL: https://github.com/nodejs/node/pull/26468
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/internal/worker/io.js b/lib/internal/worker/io.js
index e88991aaab..387dc9df74 100644
--- a/lib/internal/worker/io.js
+++ b/lib/internal/worker/io.js
@@ -15,7 +15,14 @@ const { threadId } = internalBinding('worker');
 const { Readable, Writable } = require('stream');
 const EventEmitter = require('events');
 const util = require('util');
-const debug = util.debuglog('worker');
+
+let debuglog;
+function debug(...args) {
+  if (!debuglog) {
+    debuglog = require('internal/util/debuglog').debuglog('worker');
+  }
+  debuglog(...args);
+}
 
 const kIncrementsPortRef = Symbol('kIncrementsPortRef');
 const kName = Symbol('kName');