Locale Switcher

const stop = i18n.subscribe(
  ({ locale }) => {
    document.documentElement.lang = locale;
    render();
  },
  { immediate: true },
);

async function changeLocale(locale: string) {
  await i18n.preload(locale);
  await i18n.setLocale(locale);
}

for (const locale of i18n.getSupportedLocales()) {
  console.log(locale);
}

stop();

Notes

• preload() is explicit warm-up.
• setLocale() performs the switch.
• getSupportedLocales() lists registered locale sources.
• subscribe(callback, { immediate: true }) runs once immediately, then on future changes.