transform markdown through asset transformer

packages/docs/src/asset-builder/transform-markdown.ts

@@ -0,0 +1,24 @@
+import grayMatter from "gray-matter"
+import MarkdownIt from "markdown-it"
+import prism from "markdown-it-prism"
+import { readFile } from "node:fs/promises"
+import type { AssetTransformer } from "./asset-builder.js"
+
+const renderer = new MarkdownIt({
+  html: true,
+  linkify: true,
+}).use(prism)
+
+export const transformMarkdown: AssetTransformer = {
+  async transform(inputFile) {
+    if (!/\.md$/.test(inputFile)) return
+
+    const { data, content } = grayMatter(await readFile(inputFile, "utf8"))
+    const html = renderer.render(content)
+
+    return {
+      content: html,
+      type: "text/html",
+    }
+  },
+}

packages/docs/src/guides/guide-page.tsx

@@ -1,11 +1,12 @@
 import clsx from "clsx"
 import React from "react"
+import { LocalFileAsset } from "../asset-builder/asset.js"
 import { AppLink } from "../navigation/app-link"
 import { guideLinks } from "../navigation/guide-links"
 import { MainNavigation } from "../navigation/main-navigation"
 import { docsProseClass, linkClass, maxWidthContainer } from "../ui/components"
 
-export default function GuidePage({ html }: { html: string }) {
+export function GuidePage({ url }: { url: string }) {
   return (
     <>
       <header className="bg-slate-700/30 shadow sticky top-0 backdrop-blur-sm transition z-10 flex">
@@ -24,10 +25,14 @@ export default function GuidePage({ html }: { html: string }) {
             ))}
           </ul>
         </nav>
+        <LocalFileAsset from={new URL(`${url}.md`, import.meta.url)}>
+          {(asset) => (
             <section
               className={clsx(docsProseClass, "pb-8 flex-1 min-w-0")}
-          dangerouslySetInnerHTML={{ __html: html }}
+              dangerouslySetInnerHTML={{ __html: asset.content }}
             />
+          )}
+        </LocalFileAsset>
       </main>
     </>
   )

packages/docs/src/landing/landing.tsx

@@ -1,13 +1,9 @@
 import packageJson from "reacord/package.json"
 import React from "react"
-import { renderMarkdownFile } from "../helpers/markdown"
+import { LocalFileAsset } from "../asset-builder/asset.js"
 import { MainNavigation } from "../navigation/main-navigation"
 import { maxWidthContainer } from "../ui/components"
 
-const landingExample = await renderMarkdownFile(
-  new URL("landing-example.md", import.meta.url).pathname,
-)
-
 export function Landing() {
   return (
     <div className="flex flex-col min-w-0 min-h-screen text-center">
@@ -17,10 +13,14 @@ export function Landing() {
       <div className="px-4 pb-8 flex flex-1">
         <main className="px-4 py-6 rounded-lg shadow bg-slate-800 space-y-5 m-auto w-full max-w-xl">
           <h1 className="text-6xl font-light">reacord</h1>
+          <LocalFileAsset from={new URL("landing-example.md", import.meta.url)}>
+            {(asset) => (
               <section
                 className="mx-auto text-sm sm:text-base"
-            dangerouslySetInnerHTML={{ __html: landingExample.html }}
+                dangerouslySetInnerHTML={{ __html: asset.content }}
               />
+            )}
+          </LocalFileAsset>
           <p className="text-2xl font-light">{packageJson.description}</p>
           <a
             href="/guides/getting-started"

packages/docs/src/main.tsx

@@ -11,9 +11,10 @@ import ssrPrepass from "react-ssr-prepass"
 import { AssetBuilderProvider } from "./asset-builder/asset-builder-context.js"
 import { AssetBuilder } from "./asset-builder/asset-builder.js"
 import { transformEsbuild } from "./asset-builder/transform-esbuild.js"
+import { transformMarkdown } from "./asset-builder/transform-markdown.js"
 import { transformPostCss } from "./asset-builder/transform-postcss.js"
 import { fromProjectRoot } from "./constants"
-import GuidePage from "./guides/guide-page"
+import { GuidePage } from "./guides/guide-page"
 import { renderMarkdownFile } from "./helpers/markdown"
 import { Html } from "./html.js"
 import { Landing } from "./landing/landing"
@@ -24,6 +25,7 @@ const port = process.env.PORT || 3000
 const assets = await AssetBuilder.create(fromProjectRoot(".asset-cache"), [
   transformEsbuild,
   transformPostCss,
+  transformMarkdown,
 ])
 
 async function render(res: Response, element: React.ReactElement) {
@@ -43,14 +45,14 @@ const router = Router()
   .use(assets.middleware())
 
   .get("/guides/*", async (req: Request<{ 0: string }>, res) => {
-    const { html, data } = await renderMarkdownFile(
+    const { data } = await renderMarkdownFile(
       new URL(`guides/${req.params[0]}.md`, import.meta.url).pathname,
     )
     await render(
       res,
       <AssetBuilderProvider value={assets}>
         <Html title={`${data.title} | Reacord`} description={data.description}>
-          <GuidePage html={html} />
+          <GuidePage url={req.params[0]} />
         </Html>
       </AssetBuilderProvider>,
     )