lib: improve the usage of TypeError[INVALID_ARG_TYPE]

The initials of expected in TypeError[ERR_INVALID_ARG_TYPE]
are inconsistent. This change is to unify them.

PR-URL: https://github.com/nodejs/node/pull/16401
Fixes: https://github.com/nodejs/node/issues/16383
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/test/parallel/test-util-inherits.js b/test/parallel/test-util-inherits.js
index 342e1f03f7..f05135ec78 100644
--- a/test/parallel/test-util-inherits.js
+++ b/test/parallel/test-util-inherits.js
@@ -6,7 +6,7 @@ const inherits = require('util').inherits;
 const errCheck = common.expectsError({
   code: 'ERR_INVALID_ARG_TYPE',
   type: TypeError,
-  message: 'The "superCtor" argument must be of type function'
+  message: 'The "superCtor" argument must be of type Function'
 });
 
 // super constructor
@@ -85,7 +85,7 @@ assert.throws(function() {
 }, common.expectsError({
   code: 'ERR_INVALID_ARG_TYPE',
   type: TypeError,
-  message: 'The "superCtor.prototype" property must be of type function'
+  message: 'The "superCtor.prototype" property must be of type Function'
 })
 );
 assert.throws(function() {
@@ -96,6 +96,6 @@ assert.throws(function() {
 }, common.expectsError({
   code: 'ERR_INVALID_ARG_TYPE',
   type: TypeError,
-  message: 'The "ctor" argument must be of type function'
+  message: 'The "ctor" argument must be of type Function'
 })
 );