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fix: prevent infinite loop with locale #2179

merged 2 commits into from May 15, 2022


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@jly36963 jly36963 commented May 6, 2022

Addresses: #2178


locale and kGuessLocale can enter an infinite loop


There's regex logic that turns '.UTF-8' into '', and downstream there is logic checking if that value is falsey (instead of undefined).

As a result, kGuessLocale and locale call each other infinitely.


this.locale(locale.replace(/[.:].*/, ''))

This line is what converts '.UTF-8' into ''. I don't know if my fix is sufficient or if the real problem is here.

@@ -871,7 +871,7 @@ export class YargsInstance {
locale(locale?: string): YargsInstance | string {
argsert('[string]', [locale], arguments.length);
if (!locale) {
if (locale === undefined) {
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@jly36963 jly36963 May 6, 2022

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'' is falsey, and it causes the two functions to infinitely call each other

@jly36963 jly36963 requested a review from bcoe May 7, 2022
bcoe approved these changes May 15, 2022
@bcoe bcoe merged commit b672e70 into yargs:main May 15, 2022
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2 participants