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update nextjs example #38

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merged 1 commit into from
Mar 15, 2023
Merged

update nextjs example #38

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30 changes: 24 additions & 6 deletions examples/nextjs-13/src/i18n.ts
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
import { i18n } from '@lingui/core';
import { i18n, Messages } from '@lingui/core';
import { en, cs } from 'make-plural/plurals';
import { useRef, useEffect } from 'react';
import { useRouter } from 'next/router';

export const locales = [
{ twoLettersCode: 'en', label: 'English' },
Expand All @@ -18,8 +20,24 @@ export async function loadCatalog(locale: string) {

}

// If not we can just load all the catalogs and do a simple i18n.active(localeToActive)
// i18n.load({
// en: messagesEn,
// cs: messagesCs,
// });
export function useLinguiInit(messages: Messages) {
const router = useRouter()
const locale = router.locale || router.defaultLocale!
const firstRender = useRef(true)

// run only once on the first render (for server side)
if (messages && firstRender.current) {
i18n.load(locale, messages)
i18n.activate(locale)
firstRender.current = false
}

useEffect(() => {
if (messages) {
i18n.load(locale, messages)
i18n.activate(locale)
}
}, [locale, messages])

return i18n;
}
12 changes: 2 additions & 10 deletions examples/nextjs-13/src/pages/_app.tsx
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Original file line number Diff line number Diff line change
@@ -1,18 +1,10 @@
import '@/styles/globals.css';
import type { AppProps } from 'next/app';
import { i18n } from '@lingui/core';
import { I18nProvider } from '@lingui/react';
import { useLinguiInit } from '../i18n';

export default function MyApp({ Component, pageProps, router }: AppProps) {
// Warning! THis is not public api, I didn't find a way how to make it better for now.
// Ususaly you have to call i18n.loadLocaleData() and i18n.activate()
// But they both dispatch a `change` event which trigger a stateChange
// and cause error in React because react still rendering current component
i18n._messages[router.locale as string] = pageProps.i18n;
i18n._locale = router.locale as string;

// i18n.loadLocaleData(router.locale as string, pageProps.i18n);
// i18n.activate(router.locale as string);
const i18n = useLinguiInit(pageProps.i18n);

return (
<I18nProvider i18n={i18n}>
Expand Down