site: add prettier for formatting

.git-blame-ignore-revs

@@ -3,3 +3,6 @@
 #
 # treewide: nixfmt
 475ec1b3eb17b29c7254ad20aec9ee9cb81d18b8
+
+# site: format with prettier
+ea43182509a9c6591c04ace80418cbc8e9e94b96

.github/workflows/site-format.yml

@@ -0,0 +1,35 @@
+name: "Check site formatting"
+
+on:
+  push:
+    branches:
+      - master
+  merge_group:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  prettier:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: site
+    steps:
+      - uses: actions/checkout@v7
+
+      - uses: actions/setup-node@v7
+        with:
+          cache: npm
+          cache-dependency-path: site/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Check formatting
+        run: npm run format:check
+
+      - if: ${{ failure() }}
+        run: |
+          echo "::error :: Hey! It looks like the site is not formatted. Run 'npm run format' in site/ to fix it."

site/.prettierignore

@@ -0,0 +1 @@
+package-lock.json

site/.prettierrc.json

@@ -0,0 +1,3 @@
+{
+  "plugins": ["prettier-plugin-astro"]
+}

site/astro.config.mjs

@@ -1,11 +1,14 @@
 // @ts-check
 import { defineConfig } from "astro/config";
-import { satteri } from '@astrojs/markdown-satteri';
+import { satteri } from "@astrojs/markdown-satteri";
 import netlify from "@astrojs/netlify";
 import expressiveCode, { ExpressiveCodeTheme } from "astro-expressive-code";
 import icon from "astro-iconset";
 
-import { light as nixCodeLight, dark as nixCodeDark } from "./src/assets/nixCodeTheme.ts";
+import {
+  light as nixCodeLight,
+  dark as nixCodeDark,
+} from "./src/assets/nixCodeTheme.ts";
 
 import tailwindcss from "@tailwindcss/vite";
 
@@ -26,7 +29,7 @@ export default defineConfig({
       defaultProps: {
         wrap: true,
       },
-    })
+    }),
   ],
 
   markdown: {

site/package.json

@@ -7,7 +7,9 @@
     "start": "astro dev",
     "build": "astro build",
     "preview": "astro preview",
-    "astro": "astro"
+    "astro": "astro",
+    "format": "prettier --write .",
+    "format:check": "prettier --check ."
   },
   "dependencies": {
     "@astrojs/check": "^0.9.10",
@@ -23,6 +25,8 @@
   },
   "devDependencies": {
     "@iconify-json/mdi": "^1.2.3",
-    "astro-iconset": "^0.0.6"
+    "astro-iconset": "^0.0.6",
+    "prettier": "^3.9.6",
+    "prettier-plugin-astro": "^0.14.1"
   }
 }