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fix: add client validation and find similar language from browser config if exact match is not available (#6412)

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This commit is contained in:
Prateek Shourya
2025-01-16 17:34:41 +05:30
committed by GitHub
parent 59ddc02a31
commit 2f57d0e138
1 changed files with 37 additions and 5 deletions
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42
packages/i18n/src/store/index.ts
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@@ -64,13 +64,41 @@ export class TranslationStore {
/** Checks if the language is valid based on the supported languages */
private isValidLanguage(lang: string | null): lang is TLanguage {
return lang !== null && SUPPORTED_LANGUAGES.some((l) => l.value === lang);
return lang !== null && this.availableLanguages.some((l) => l.value === lang);
}
/** Checks if a language code is similar to any supported language */
private findSimilarLanguage(lang: string): TLanguage | null {
// Convert to lowercase for case-insensitive comparison
const normalizedLang = lang.toLowerCase();
// Find a supported language that includes or is included in the browser language
const similarLang = this.availableLanguages.find(
(l) => normalizedLang.includes(l.value.toLowerCase()) || l.value.toLowerCase().includes(normalizedLang)
);
return similarLang ? similarLang.value : null;
}
/** Gets the browser language based on the navigator.language */
private getBrowserLanguage(): TLanguage {
const browserLang = navigator.language.split("-")[0];
return this.isValidLanguage(browserLang) ? browserLang : FALLBACK_LANGUAGE;
const browserLang = navigator.language;
// Check exact match first
if (this.isValidLanguage(browserLang)) {
return browserLang;
}
// Check base language without region code
const baseLang = browserLang.split("-")[0];
if (this.isValidLanguage(baseLang)) {
return baseLang as TLanguage;
}
// Try to find a similar language
const similarLang = this.findSimilarLanguage(browserLang) || this.findSimilarLanguage(baseLang);
return similarLang || FALLBACK_LANGUAGE;
}
/**
@@ -151,10 +179,14 @@ export class TranslationStore {
throw new Error(`Invalid language: ${lng}`);
}
localStorage.setItem(STORAGE_KEY, lng);
if (typeof window !== "undefined") {
localStorage.setItem(STORAGE_KEY, lng);
}
this.currentLocale = lng;
this.messageCache.clear(); // Clear cache when language changes
document.documentElement.lang = lng;
if (typeof window !== "undefined") {
document.documentElement.lang = lng;
}
} catch (error) {
console.error("Failed to set language:", error);
}