u-fit/frontend/pages/_app.js

import App from 'next/app'
import client from '../lib/apollo'
import { ApolloProvider } from '@apollo/client'
import Page from '../components/page'

/**
 * Next.js uses the `App` component to initialize pages. See:
 * https://github.com/zeit/next.js/#custom-app
 *
 * Using next-with-apollo:
 * https://github.com/lfades/next-with-apollo
 * - Wrapping MyApp in withApollo HOC
 */

class MyApp extends App {
  static async getInitialProps ({ Component, ctx }) {
    let pageProps = {}

    if (Component.getInitialProps) {
      pageProps = await Component.getInitialProps(ctx)
    }

    // Add the query object to the pageProps
    // https://github.com/wesbos/Advanced-React/blob/master/finished-application/frontend/pages/_app.js
    pageProps.query = ctx.query
    return { pageProps }
  }

  render () {
    const { Component, pageProps } = this.props

    return (
      <ApolloProvider client={client}>
        <Page>
          <Component {...pageProps} />
        </Page>
      </ApolloProvider>
    )
  }
}

export default MyApp