fix(providers): Add timeZone prop to NextIntlClientProvider #206
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Summary of ChangesHello @DyAxy, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request enhances the application's internationalization capabilities by integrating dynamic time zone detection into the Highlights
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WalkthroughThe pull request adds automatic timezone detection to the application's provider configuration. It retrieves the user's timezone using the Intl API with an 'UTC' fallback, then passes this value as a prop to the NextIntlClientProvider component. Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes
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✨ Finishing touches
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Code Review
This pull request adds the timeZone property to the NextIntlClientProvider to ensure correct date and time formatting based on the user's timezone. While the intention is correct, the current implementation can lead to hydration mismatch errors in Next.js. I've provided a suggestion to resolve this by using React hooks to safely determine the timezone on the client side. This change will make the application more robust.
| const timeZone = Intl.DateTimeFormat().resolvedOptions().timeZone || 'UTC'; | ||
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| return ( | ||
| <NextIntlClientProvider locale={locale} messages={messages}> | ||
| <NextIntlClientProvider locale={locale} messages={messages} timeZone={timeZone}> |
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This implementation can cause a hydration mismatch error in Next.js. Intl.DateTimeFormat().resolvedOptions().timeZone will produce different values on the server and the client, leading to a mismatch if their timezones differ.
To prevent this, you should use React.useState and React.useEffect to set the timezone only on the client side after the component has mounted. This ensures the initial render on the client matches the server-rendered output.
Note: You'll need to change the React import from import type * as React from 'react'; to import * as React from 'react'; for this suggestion to work.
const [timeZone, setTimeZone] = React.useState('UTC');
React.useEffect(() => {
setTimeZone(Intl.DateTimeFormat().resolvedOptions().timeZone || 'UTC');
}, []);
return (
<NextIntlClientProvider locale={locale} messages={messages} timeZone={timeZone}>
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Actionable comments posted: 0
🧹 Nitpick comments (1)
app/providers.tsx (1)
34-34: Consider memoizing the timezone computation.The timezone is recomputed on every render of the
Providerscomponent. Since the user's timezone won't change during a session, wrap this inuseMemoto avoid unnecessary recalculations.Apply this diff:
+import { useMemo } from 'react'; + export function Providers({ children, themeProps, locale, messages }: ProvidersProps) { const router = useRouter(); - const timeZone = Intl.DateTimeFormat().resolvedOptions().timeZone || 'UTC'; + const timeZone = useMemo( + () => Intl.DateTimeFormat().resolvedOptions().timeZone || 'UTC', + [] + );
Alice39s
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