Merge branch 'main' into repo-sync

.github/workflows/staging-build-pr.yml

@@ -34,9 +34,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Dump full context for debugging
-        env:
-          GITHUB_CONTEXT: ${{ toJSON(github) }}
-        run: echo "$GITHUB_CONTEXT"
+        run: |
+          cat << EOF
+          ${{ toJSON(github) }}
+          EOF
 
   build-pr:
     if: ${{ github.repository == 'github/docs-internal' || github.repository == 'github/docs' }}

middleware/render-page.js

@@ -34,7 +34,10 @@ export default async function renderPage(req, res, next) {
 
   // Updating the Last-Modified header for substantive changes on a page for engineering
   // Docs Engineering Issue #945
-  if (context.page.effectiveDate !== '') {
+  if (context.page.effectiveDate) {
+    // Note that if a page has an invalidate `effectiveDate` string value,
+    // it would be caught prior to this usage and ultimately lead to
+    // 500 error.
     res.setHeader('Last-Modified', new Date(context.page.effectiveDate).toUTCString())
   }