From 5f3b850da5fdfa83d48b56f46592aff80dc6e796 Mon Sep 17 00:00:00 2001
From: dnlup <dwon.dnl@gmail.com>
Date: Tue, 19 Mar 2019 17:13:20 +0100
Subject: [PATCH] lib: reduce usage of require('util')

Replace `require('util').inspect` and `require('util').format` with
`require('util/internal/inspect').inspect` and
`require('util/internal/inspect').format` in `lib/internal/errors.js`.

PR-URL: https://github.com/nodejs/node/pull/26782
Refs: https://github.com/nodejs/node/issues/26546
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 lib/internal/errors.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/lib/internal/errors.js b/lib/internal/errors.js
index a80cf015242bfd..30af8f18f4ca2a 100644
--- a/lib/internal/errors.js
+++ b/lib/internal/errors.js
@@ -30,6 +30,14 @@ function lazyInternalUtil() {
   return internalUtil;
 }
 
+let internalUtilInspect = null;
+function lazyInternalUtilInspect() {
+  if (!internalUtilInspect) {
+    internalUtilInspect = require('internal/util/inspect');
+  }
+  return internalUtilInspect;
+}
+
 let buffer;
 function lazyBuffer() {
   if (buffer === undefined)
@@ -220,7 +228,6 @@ function E(sym, val, def, ...otherClasses) {
 function getMessage(key, args, self) {
   const msg = messages.get(key);
 
-  if (util === undefined) util = require('util');
   if (assert === undefined) assert = require('internal/assert');
 
   if (typeof msg === 'function') {
@@ -242,7 +249,7 @@ function getMessage(key, args, self) {
     return msg;
 
   args.unshift(msg);
-  return util.format.apply(null, args);
+  return lazyInternalUtilInspect().format.apply(null, args);
 }
 
 let uvBinding;
@@ -773,7 +780,7 @@ E('ERR_INVALID_ARG_TYPE',
     return msg;
   }, TypeError);
 E('ERR_INVALID_ARG_VALUE', (name, value, reason = 'is invalid') => {
-  let inspected = util.inspect(value);
+  let inspected = lazyInternalUtilInspect().inspect(value);
   if (inspected.length > 128) {
     inspected = `${inspected.slice(0, 128)}...`;
   }