next.config.js

const { withContentlayer } = require('next-contentlayer');

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

// You might need to insert additional domains in script-src if you are using external services
const ContentSecurityPolicy = `
  default-src 'self';
  script-src 'self' 'unsafe-eval' 'unsafe-inline' giscus.app analytics.umami.is www.youtube.com www.googletagmanager.com www.google-analytics.com;
  style-src 'self' 'unsafe-inline';
  img-src * blob: data:;
  media-src *.s3.amazonaws.com;
  connect-src *;
  font-src 'self';
  frame-src www.youtube.com youtube.com giscus.app youtu.be;
`;

const securityHeaders = [
    // https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
    {
        key: 'Content-Security-Policy',
        value: ContentSecurityPolicy.replace(/\n/g, '')
    },
    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy
    {
        key: 'Referrer-Policy',
        value: 'strict-origin-when-cross-origin'
    },
    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options
    {
        key: 'X-Frame-Options',
        value: 'DENY'
    },
    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options
    {
        key: 'X-Content-Type-Options',
        value: 'nosniff'
    },
    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control
    {
        key: 'X-DNS-Prefetch-Control',
        value: 'on'
    },
    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security
    {
        key: 'Strict-Transport-Security',
        value: 'max-age=31536000; includeSubDomains'
    },
    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Feature-Policy
    {
        key: 'Permissions-Policy',
        value: 'camera=(), microphone=(), geolocation=()'
    }
];

/**
 * @type {import('next/dist/next-server/server/config').NextConfig}
 **/
module.exports = () => {
    const plugins = [withContentlayer, withBundleAnalyzer];
    return plugins.reduce((acc, next) => next(acc), {
        output: 'export',
        // distDir: 'dist',
        reactStrictMode: true,
        pageExtensions: ['ts', 'tsx', 'js', 'jsx', 'md', 'mdx'],
        eslint: {
            dirs: ['app', 'components', 'layouts', 'scripts']
        },
        images: {
            remotePatterns: [
                {
                    protocol: 'https',
                    hostname: 'picsum.photos'
                }
            ]
        },
        // async headers() {
        //     return [
        //         {
        //             source: '/(.*)',
        //             headers: securityHeaders
        //         }
        //     ];
        // },
        webpack: (config, options) => {
            config.module.rules.push({
                test: /\.svg$/,
                use: ['@svgr/webpack']
            });

            return config;
        }
    });
};