errors: improve classRegExp in errors.js

PR-URL: #49643 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: LiviaMedeiros <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]>

Author: Uzlopak

benchmark/error/error-class-reg-exp.js

@@ -0,0 +1,23 @@
+'use strict';
+
+constcommon=require('../common.js');
+
+constbench=common.createBenchmark(main,{
+n: [1e5],
+},{
+flags: ['--expose-internals'],
+});
+
+constinstances=Array.from({length: 1000}).map(()=>'Uint8Array');
+
+functionmain({ n }){
+const{
+codes: {
+ERR_INVALID_ARG_TYPE,
+},
+}=require('internal/errors');
+bench.start();
+for(leti=0;i<n;++i)
+newERR_INVALID_ARG_TYPE('target',instances,'test');
+bench.end(n);
+}

lib/internal/errors.js

@@ -66,7 +66,8 @@ const isWindows = process.platform === 'win32'
 constmessages=newSafeMap();
 constcodes={};
 
-constclassRegExp=/^([A-Z][a-z0-9]*)+$/;
+constclassRegExp=/^[A-Z][a-zA-Z0-9]*$/;
+
 // Sorted by a rough estimate on most frequently used entries.
 constkTypes=[
 'string',