fix: purge css

Author: icreated

.github/workflows/jekyll.yml

@@ -47,6 +47,21 @@ jobs:
         run: bundle exec jekyll build --baseurl "${{ steps.pages.outputs.base_path }}"
         env:
           JEKYLL_ENV: production
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      - name: Purge unused CSS
+        run: |
+          npx --yes purgecss \
+            --css _site/assets/plugins/bootstrap/css/bootstrap.min.css \
+            --content '_site/**/*.html' \
+            --output _site/assets/plugins/bootstrap/css/
+          npx purgecss \
+            --css _site/assets/fontawesome/css/all.min.css \
+            --content '_site/**/*.html' \
+            --safelist pattern:/^fa/ \
+            --output _site/assets/fontawesome/css/
       - name: Upload artifact
         # Automatically uploads an artifact from the './_site' directory by default
         uses: actions/upload-pages-artifact@v3

assets/fontawesome/css/all.min.css

@@ -0,0 +1,14 @@
+// Run after `bundle exec jekyll build` to strip unused CSS.
+// Usage: npx purgecss --config purgecss.config.js
+module.exports = {
+    content: ['_site/**/*.html'],
+    css: [
+        'assets/plugins/bootstrap/css/bootstrap.min.css',
+        'assets/fontawesome/css/all.min.css',
+    ],
+    output: undefined, // overwrite in-place
+    safelist: {
+        // Keep all FontAwesome utility classes (fa, fab, fas, far, fa-*)
+        pattern: /^fa/,
+    },
+};