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util: optimize toASCIILower function using V8's native toLowerCase #61107

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util: optimize toASCIILower function using V8's native toLowerCase #61107

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57b817f
util: optimize toASCIILower function using V8s native toLowerCase
mertcanaltin Dec 18, 2025
6fe4c8c
Update lib/internal/mime.js
mertcanaltin Dec 18, 2025
8eb0dba
util added result
mertcanaltin Dec 18, 2025
34692cf
added no-control-regex
mertcanaltin Dec 18, 2025
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2 changes: 2 additions & 0 deletions lib/internal/mime.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,8 @@ const END_BEGINNING_WHITESPACE = /[^\r\n\t ]|$/;
const START_ENDING_WHITESPACE = /[\r\n\t ]*$/;

function toASCIILower(str) {
// eslint-disable-next-line no-control-regex
if (!/[^\x00-\x7f]/.test(str)) return StringPrototypeToLowerCase(str);
let result = '';
for (let i = 0; i < str.length; i++) {
const char = str[i];
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