fix(docs-site): prevent OOM in CI by hoisting HTML5 Set and increasing heap

The isCustomElement callback was allocating a new 80-element Set on every
tag evaluation — thousands of times across 110+ archive pages. Hoist to
module scope. Also set NODE_OPTIONS=--max-old-space-size=4096 in CI.

Author: jung-thomas

.github/workflows/docs.yml

@@ -38,6 +38,8 @@ jobs:
       - name: Build VitePress site
         run: npm run build
         working-directory: docs-site
+        env:
+          NODE_OPTIONS: '--max-old-space-size=4096'
       - uses: actions/upload-pages-artifact@v3
         with:
           path: docs-site/.vitepress/dist

docs-site/.vitepress/config.mts

@@ -32,6 +32,22 @@ const archiveEscapePlugin: Plugin = {
   },
 }
 
+const HTML5_ELEMENTS = new Set([
+  'a', 'abbr', 'address', 'area', 'article', 'aside', 'audio', 'b', 'base',
+  'bdi', 'bdo', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption',
+  'cite', 'code', 'col', 'colgroup', 'data', 'datalist', 'dd', 'del',
+  'details', 'dfn', 'dialog', 'div', 'dl', 'dt', 'em', 'embed', 'fieldset',
+  'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5',
+  'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'iframe', 'img',
+  'input', 'ins', 'kbd', 'label', 'legend', 'li', 'link', 'main', 'map',
+  'mark', 'menu', 'meta', 'meter', 'nav', 'noscript', 'object', 'ol',
+  'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q',
+  'rp', 'rt', 'ruby', 's', 'samp', 'script', 'search', 'section', 'select',
+  'slot', 'small', 'source', 'span', 'strong', 'style', 'sub', 'summary',
+  'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th',
+  'thead', 'time', 'title', 'tr', 'track', 'u', 'ul', 'var', 'video', 'wbr',
+])
+
 export default defineConfig({
   title: 'sap-devs',
   description: 'SAP developer knowledge, injected into your AI coding tools',
@@ -55,22 +71,7 @@ export default defineConfig({
       compilerOptions: {
         isCustomElement: (tag) => {
           if (!/^[a-z][a-z0-9]*(-[a-z0-9]+)*$/.test(tag)) return false
-          const html5 = new Set([
-            'a', 'abbr', 'address', 'area', 'article', 'aside', 'audio', 'b', 'base',
-            'bdi', 'bdo', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption',
-            'cite', 'code', 'col', 'colgroup', 'data', 'datalist', 'dd', 'del',
-            'details', 'dfn', 'dialog', 'div', 'dl', 'dt', 'em', 'embed', 'fieldset',
-            'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5',
-            'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'iframe', 'img',
-            'input', 'ins', 'kbd', 'label', 'legend', 'li', 'link', 'main', 'map',
-            'mark', 'menu', 'meta', 'meter', 'nav', 'noscript', 'object', 'ol',
-            'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q',
-            'rp', 'rt', 'ruby', 's', 'samp', 'script', 'search', 'section', 'select',
-            'slot', 'small', 'source', 'span', 'strong', 'style', 'sub', 'summary',
-            'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th',
-            'thead', 'time', 'title', 'tr', 'track', 'u', 'ul', 'var', 'video', 'wbr',
-          ])
-          return !html5.has(tag)
+          return !HTML5_ELEMENTS.has(tag)
         },
       },
     },