next-app-template/next.config.js

const withBundleAnalyzer = require('@next/bundle-analyzer')({
  enabled: process.env.ANALYZE === 'true',
});

module.exports = withBundleAnalyzer({
  reactStrictMode: false,
  eslint: {
    ignoreDuringBuilds: true,
  },
  experimental: {
    optimizePackageImports: ['@mantine/core', '@mantine/hooks'],
  },

  sassOptions: {
    prependData: `@import "./_mantine.scss";`,
  },
});