Types for the Apollo setup file from the Next's "with-apollo" example (https://github.com/zeit/next.js/tree/canary/examples/with-apollo). If you've got a suggestion how to improve this, please post it in the comments section.

apollo.tsx

import React from 'react';
import Head from 'next/head';
import { ApolloProvider } from '@apollo/react-hooks';
import { ApolloClient } from 'apollo-client';
import { InMemoryCache } from 'apollo-cache-inmemory';
import { HttpLink } from 'apollo-link-http';
import fetch from 'isomorphic-unfetch';
import { NextPage } from 'next';

export type AppApolloCache = any;

let apolloClient: ApolloClient<AppApolloCache> | null = null;

interface ApolloInitialProps {
  apolloState?: AppApolloCache;
}

interface ApolloProps extends ApolloInitialProps {
  apolloClient?: ApolloClient<any>;
}

/**
 * Creates and provides the apolloContext
 * to a next.js PageTree. Use it by wrapping
 * your PageComponent via HOC pattern.
 * @param {Function|Class} PageComponent
 * @param {Object} [config]
 * @param {Boolean} [config.ssr=true]
 */
export function withApollo<PageProps extends object, InitialProps = PageProps>(
  PageComponent: NextPage<PageProps, InitialProps>,
  { ssr = true } = {}
) {
  const WithApollo: NextPage<
    ApolloProps & PageProps,
    ApolloInitialProps & InitialProps
  > = ({ apolloClient, apolloState, ...pageProps }) => {
    const client = apolloClient || initApolloClient(apolloState);
    return (
      <ApolloProvider client={client}>
        <PageComponent {...(pageProps as PageProps)} />
      </ApolloProvider>
    );
  };

  // Set the correct displayName in development
  if (process.env.NODE_ENV !== 'production') {
    const displayName =
      PageComponent.displayName || PageComponent.name || 'Component';

    if (displayName === 'App') {
      console.warn('This withApollo HOC only works with PageComponents.');
    }

    WithApollo.displayName = `withApollo(${displayName})`;
  }

  if (ssr || PageComponent.getInitialProps) {
    WithApollo.getInitialProps = async ctx => {
      const { AppTree } = ctx;

      // Initialize ApolloClient, add it to the ctx object so
      // we can use it in `PageComponent.getInitialProp`.
      const apolloClient = (ctx.apolloClient = initApolloClient());

      // Run wrapped getInitialProps methods
      let pageProps = {} as InitialProps;
      if (PageComponent.getInitialProps) {
        pageProps = await PageComponent.getInitialProps(ctx);
      }

      // Only on the server:
      if (typeof window === 'undefined') {
        // When redirecting, the response is finished.
        // No point in continuing to render
        if (ctx.res && ctx.res.finished) {
          return pageProps;
        }

        // Only if ssr is enabled
        if (ssr) {
          try {
            // Run all GraphQL queries
            const { getDataFromTree } = await import('@apollo/react-ssr');
            await getDataFromTree(
              <AppTree
                pageProps={{
                  ...pageProps,
                  apolloClient
                }}
              />
            );
          } catch (error) {
            // Prevent Apollo Client GraphQL errors from crashing SSR.
            // Handle them in components via the data.error prop:
            // https://www.apollographql.com/docs/react/api/react-apollo.html#graphql-query-data-error
            console.error('Error while running `getDataFromTree`', error);
          }

          // getDataFromTree does not call componentWillUnmount
          // head side effect therefore need to be cleared manually
          Head.rewind();
        }
      }

      // Extract query data from the Apollo store
      const apolloState = apolloClient.cache.extract();

      return {
        ...pageProps,
        apolloState
      };
    };
  }

  return WithApollo;
}

/**
 * Always creates a new apollo client on the server
 * Creates or reuses apollo client in the browser.
 * @param  {Object} initialState
 */
function initApolloClient(initialState?: AppApolloCache) {
  // Make sure to create a new client for every server-side request so that data
  // isn't shared between connections (which would be bad)
  if (typeof window === 'undefined') {
    return createApolloClient(initialState);
  }

  // Reuse client on the client-side
  if (!apolloClient) {
    apolloClient = createApolloClient(initialState);
  }

  return apolloClient;
}

/**
 * Creates and configures the ApolloClient
 * @param  {Object} [initialState={}]
 */
function createApolloClient(initialState: AppApolloCache = {}) {
  // Check out https://github.com/zeit/next.js/pull/4611 if you want to use the AWSAppSyncClient
  return new ApolloClient<AppApolloCache>({
    ssrMode: typeof window === 'undefined', // Disables forceFetch on the server (so queries are only run once)
    link: new HttpLink({
      uri: 'https://api.graph.cool/simple/v1/cixmkt2ul01q00122mksg82pn', // Server URL (must be absolute)
      credentials: 'same-origin', // Additional fetch() options like `credentials` or `headers`
      fetch
    }),
    cache: new InMemoryCache().restore(initialState)
  });
}

Hi, I am using the same script with "@apollo/client": "^3.5.8" and using @apollo/client/react/ssr instead of @apollo/react-ssr . But somehow the after const { AppTree } = ctx; I console log the output of AppTree and I find no queries in it. So my I am not able to call the server-side. It is directly getting called from the client then because there was nothing in apolloState.

import { useQuery, gql } from '@apollo/client';
import { withApollo } from '../lib/apollo/withApollo';

const MyQuery = gql`
  query MyQuery {
    trip {
      id
    }
  }
`;
const Sample = () => {
  const { loading, error, data } = useQuery(MyQuery);

  if (loading) {
    return <div>Loading...</div>;
  }
  if (error) {
    console.error(error);
    return <div>Error!</div>;
  }

  return (
    <div>
      <pre>{JSON.stringify(data, null, 2)}</pre>
    </div>
  );
};
export default withApollo({ ssr: true })(Sample);