next.config.js

const { NextFederationPlugin } = require('@module-federation/nextjs-mf');
const deps = require('./package.json').dependencies;

module.exports = {
  webpack(config, options) {
    if (!options.isServer) {
      config.plugins.push(
        new NextFederationPlugin({
          name: 'next-host',
          filename: 'static/chunks/remoteEntry.js',
          remotes: {
            reactRemote: 'reactRemote@http://localhost:3002/remoteEntry.js',
          },
          exposes: {},
          shared: {
            'i18next-shared-lib/': {
              // BEWARE THE TRAILING "/" !!
              singleton: true,
            },
            i18next: {
              singleton: true,
              requiredVersion: deps.i18next,
            },
            'react-i18next': {
              singleton: true,
              requiredVersion: deps['react-i18next'],
            },
          },
        }),
      );
    }
    return config;
  },
};