Building Static Sites

Analog supports Static Site Generation when building for deployment. This includes prerendering provided routes to static HTML files along with the client-side application.

Static Site Generation

From Routes List

To prerender pages, use the prerender property to configure routes to be rendered at build time. The routes to be prerendered can be provided asynchronously also.

import { defineConfig } from 'vite';
import analog from '@analogjs/platform';

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => ({
  plugins: [
    analog({
      prerender: {
        routes: async () => [
          '/',
          '/about',
          '/blog',
          '/blog/posts/2023-02-01-my-first-post',
        ],
      },
    }),
  ],
}));

From Content Directory

You might want to prerender all routes that are the result of a rendered content directory. For example if you have a blog and all your articles are places as Markdown files in the contents directory. For such scenarios, you can add an object to the routes config to render everything within a directory. Keep in mind, that your directory structure may not be reflected 1:1 in your apps path. Therefore, you have to pass a transform function which maps the file paths to the URLs. The returning string should be the URL path in your app. Using transform allows you also filter out some routes by returning false. This does not include them in the prerender process, such as files marked as draft in the frontmatter. The contentDir value of that object can be a glob pattern or just a specific path.

import { defineConfig } from 'vite';
import analog, { type PrerenderContentFile } from '@analogjs/platform';

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => ({
  plugins: [
    analog({
      prerender: {
        routes: async () => [
          '/',
          '/blog',
          {
            contentDir: 'src/content/blog',
            transform: (file: PrerenderContentFile) => {
              // do not include files marked as draft in frontmatter
              if (file.attributes.draft) {
                return false;
              }
              // use the slug from frontmatter if defined, otherwise use the files basename
              const slug = file.attributes.slug || file.name;
              return `/blog/${slug}`;
            },
          },
        ],
      },
    }),
  ],
}));

Only static pages

To only prerender the static pages, use the static: true flag.

import { defineConfig } from 'vite';
import analog from '@analogjs/platform';

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => ({
  plugins: [
    analog({
      static: true,
      prerender: {
        routes: async () => [
          '/',
          '/about',
          '/blog',
          '/blog/posts/2023-02-01-my-first-post',
        ],
      },
    }),
  ],
}));

The static pages can be deployed from the dist/analog/public directory.

Sitemap Generation

Analog also supports automatic sitemap generation. Analog generates a sitemap in the dist/analog/public directory when running a build if a sitemap configuration is provided.

import { defineConfig } from 'vite';
import analog from '@analogjs/platform';

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => ({
  plugins: [
    analog({
      prerender: {
        routes: async () => ['/', '/blog'],
        sitemap: {
          host: 'https://analogjs.org/',
        },
      },
    }),
  ],
}));

As long as routes are provided, Analog generates a sitemap.xml file containing a mapping of the pages' <loc> and <lastmod> properties.

<?xml version="1.0" encoding="UTF-8"?>
<urlset...>
    <!--This file was automatically generated by Analog.-->
    <url>
        <loc>https://analogjs.org/</loc>
        <lastmod>2023-07-01</lastmod>
    </url>
    <url>
        <loc>https://analogjs.org/blog</loc>
        <lastmod>2023-07-01</lastmod>
    </url>
</urlset...>

Post-rendering Hooks

Analog supports the post-rendering hooks during the prerendering process. The use case for post-rendering hooks can be inlining critical CSS, adding/removing scripts in HTML files, etc.

The sample code below shows how to use postRenderingHooks in your code:

import analog from '@analogjs/platform';
import { defineConfig } from 'vite';
import { PrerenderRoute } from 'nitropack';

// https://vitejs.dev/config/
export default defineConfig(() => {
  return {
    publicDir: 'src/public',
    build: {
      target: ['es2020'],
    },
    plugins: [
      analog({
        static: true,
        prerender: {
          routes: async () => [],
          postRenderingHooks: [
            async (route: PrerenderRoute) => console.log(route),
          ],
        },
      }),
    ],
  };
});

The PrerenderRoute gives you information about route, contents, data, and fileName, which can be useful for making changes to your content during the prerendering phase.

Below is a small example where we can append a script to include Google Analytics during the prerendering process using postRenderingHooks:

/// <reference types="vitest" />

import analog from '@analogjs/platform';
import { defineConfig, splitVendorChunkPlugin } from 'vite';
import { nxViteTsPaths } from '@nx/vite/plugins/nx-tsconfig-paths.plugin';
import { PrerenderRoute } from 'nitropack';

// https://vitejs.dev/config/
export default defineConfig(() => {
  return {
    publicDir: 'src/public',
    build: {
      target: ['es2020'],
    },
    plugins: [
      analog({
        static: true,
        prerender: {
          routes: async () => ['/', '/aboutus'],
          postRenderingHooks: [
            async (route: PrerenderRoute) => {
              const gTag = `<script>
              (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
                (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
                m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
                })(window,document,'script','//www.google-analytics.com/analytics.js','ga');

                ga('create', 'UA-xxxxxx-1', 'auto');
                ga('send', 'pageview');
              </script>`;
              if (route.route === '/aboutus') {
                route.contents = route.contents?.concat(gTag);
              }
            },
          ],
        },
      }),
    ],
  };
});