cal.pub0.org/packages/trpc/server/middlewares/localeMiddleware.ts

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import sessionMiddleware from "./sessionMiddleware";
const localeMiddleware = sessionMiddleware.unstable_pipe(async ({ ctx, next }) => {
const { serverSideTranslations } = await import("next-i18next/serverSideTranslations");
const { user } = ctx;
const i18n = await serverSideTranslations(
user?.locale && user?.locale !== ctx.locale ? user.locale : ctx.locale,
["common", "vital"]
);
const locale = user?.locale || ctx.locale;
return next({
ctx: { locale, i18n, user: { ...user, locale } },
});
});
export default localeMiddleware;