import type { GetServerSidePropsContext } from "next"; import { serverSideTranslations } from "next-i18next/serverSideTranslations"; import superjson from "superjson"; import { getLocaleFromHeaders } from "@calcom/lib/i18n"; import { createProxySSGHelpers } from "@calcom/trpc/react/ssg"; import { createContext } from "@calcom/trpc/server/createContext"; import { appRouter } from "@calcom/trpc/server/routers/_app"; /** * Initialize server-side rendering tRPC helpers. * Provides a method to prefetch tRPC-queries in a `getServerSideProps`-function. * Automatically prefetches i18n based on the passed in `context`-object to prevent i18n-flickering. * Make sure to `return { props: { trpcState: ssr.dehydrate() } }` at the end. */ export async function ssrInit(context: GetServerSidePropsContext) { const ctx = await createContext(context); const locale = getLocaleFromHeaders(context.req); const i18n = await serverSideTranslations(getLocaleFromHeaders(context.req), ["common", "vital"]); const ssr = createProxySSGHelpers({ router: appRouter, transformer: superjson, ctx: { ...ctx, locale, i18n }, }); // always preload "viewer.public.i18n" await ssr.viewer.public.i18n.fetch(); // So feature flags are available on first render await ssr.viewer.features.map.prefetch(); return ssr; }