feat: switch to frontmatter

The intention is to build an RSS generator eventually

package-lock.json

@@ -20,7 +20,8 @@
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@@ -33,6 +34,7 @@
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         "url": "https://github.com/sponsors/wooorm"
@@ -1881,6 +1888,20 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/mdast-util-frontmatter": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/mdast-util-frontmatter/-/mdast-util-frontmatter-1.0.1.tgz",
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+      "dependencies": {
+        "@types/mdast": "^3.0.0",
+        "mdast-util-to-markdown": "^1.3.0",
+        "micromark-extension-frontmatter": "^1.0.0"
+      },
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+        "url": "https://opencollective.com/unified"
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@@ -1975,7 +1996,6 @@
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@@ -2009,7 +2029,6 @@
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@@ -2029,7 +2048,6 @@
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@@ -2113,6 +2131,21 @@
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       }
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+    "node_modules/micromark-extension-frontmatter": {
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@@ -3090,6 +3118,21 @@
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+      "dependencies": {
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+        "mdast-util-frontmatter": "^1.0.0",
+        "micromark-extension-frontmatter": "^1.0.0",
+        "unified": "^10.0.0"
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+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
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@@ -3120,6 +3163,26 @@
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+      "dev": true,
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+        "estree-util-value-to-estree": "^3.0.0",
+        "toml": "^3.0.0",
+        "unified": "^10.0.0",
+        "yaml": "^2.0.0"
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@@ -3315,6 +3378,12 @@
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package.json

@@ -22,7 +22,8 @@
     "katex": "^0.16.6",
     "normalize.css": "^8.0.1",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "react-dom": "^18.2.0",
+    "remark-frontmatter": "^4.0.1"
   },
   "devDependencies": {
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@@ -35,6 +36,7 @@
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     "rehype-katex": "^6.0.3",
     "remark-math": "^5.1.1",
+    "remark-mdx-frontmatter": "^3.0.0",
     "typescript": "^4.9.3",
     "vite": "^4.2.0"
   }

pages/LayoutBase.tsx

@@ -1,22 +1,7 @@
 import { PropsWithChildren, StrictMode } from "react";
-import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
-import { faHome, faUser } from "@fortawesome/free-solid-svg-icons";
 
 import "./style.css";
-
+import Navbar from "./Navbar";
-const Navbar: React.FC = () => (
-  <span className="navbar">
-    <a href="/">
-      <FontAwesomeIcon icon={faHome} className="icon" />
-      Home
-    </a>
-    <span>/</span>
-    <a href="/about">
-      <FontAwesomeIcon icon={faUser} className="icon" />
-      About
-    </a>
-  </span>
-);
 
 const Layout: React.FC<PropsWithChildren> = ({ children }) => (
   <StrictMode>

pages/Navbar.tsx

@@ -0,0 +1,18 @@
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
+import { faHome, faUser } from "@fortawesome/free-solid-svg-icons";
+
+const Navbar: React.FC = () => (
+  <span className="navbar">
+    <a href="/">
+      <FontAwesomeIcon icon={faHome} className="icon" />
+      Home
+    </a>
+    <span>/</span>
+    <a href="/about">
+      <FontAwesomeIcon icon={faUser} className="icon" />
+      About
+    </a>
+  </span>
+);
+
+export default Navbar;

posts/2019/02/the-whole-world.mdx

@@ -1,9 +1,11 @@
+---
+title: "Global Memory Usage: The Whole World"
+description: Static considered slightly less harmful.
+published: 2019-02-05
+---
+
 import Blog from "../../LayoutBlog";
-export default Blog({
+export default Blog(frontmatter);
-  title: "Global Memory Usage: The Whole World",
-  description: "Static considered slightly less harmful.",
-  published: "2019-02-05",
-});
 
 $m_at^h$
 

vite.config.ts

@@ -4,7 +4,9 @@ import mdx from "@mdx-js/rollup";
 import react from "@vitejs/plugin-react-swc";
 import rehypeHighlight from "rehype-highlight";
 import rehypeKatex from "rehype-katex";
+import remarkFrontmatter from "remark-frontmatter";
 import remarkMath from "remark-math";
+import remarkMdxFrontmatter from "remark-mdx-frontmatter";
 
 export default defineConfig({
   build: {
@@ -19,7 +21,7 @@ export default defineConfig({
       "/2019/02/the-whole-world": "/posts/2019/02/the-whole-world.mdx",
     }),
     mdx({
-      remarkPlugins: [remarkMath],
+      remarkPlugins: [remarkFrontmatter, remarkMath, remarkMdxFrontmatter],
       rehypePlugins: [rehypeHighlight, rehypeKatex],
       providerImportSource: "@mdx-js/react",
     }),