Minify json files on build

.github/workflows/jekyll-gh-pages.yml

@@ -35,6 +35,8 @@ jobs:
         with:
           source: ./
           destination: ./_site
+      - name: Minify json files
+        run: bash jsonMinify.sh
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v2
 

jsonMinify.sh

@@ -0,0 +1,13 @@
+find ./_site/ \( -iname '*.json' \) -type f -print0 | while IFS= read -r -d $'\0' jsonFile; do
+  if [[ "$OSTYPE" == "darwin"* ]]; then
+    if ! command -v gsed &> /dev/null
+    then
+      echo "Please install GNU sed as gsed"
+    else
+      jq -c . < "$jsonFile" | gsed -z '$ s/\n$//' > "$jsonFile-tempOut"
+    fi
+  else
+    jq -c . < "$jsonFile" | sed -z '$ s/\n$//' > "$jsonFile-tempOut"
+  fi
+  mv "$jsonFile-tempOut" "$jsonFile"
+done