adjust npm based linters

.github/workflows/tests.yml

@@ -116,7 +116,9 @@ jobs:
       - name: Display Packages
         # skip python setup if running with docker
         if: ${{ matrix.test-case != 'test-docker' }}
-        run: pip freeze
+        run: |
+          pip freeze
+          npm list
       #- name: Setup Environment Variables
       #  uses: c-py/action-dotenv-to-setenv@v2
       #  with:

Makefile

@@ -279,23 +279,16 @@ install-npm:    ## install npm package manager and dependencies if they cannot b
 
 .PHONY: install-npm-stylelint
 install-npm-stylelint: install-npm   	## install stylelint dependency for 'check-css' target using npm
-	@[ `npm ls 2>/dev/null | grep stylelint-config-standard | wc -l` = 1 ] || ( \
+	@[ `npm ls 2>/dev/null | grep stylelint-config-standard | grep -v UNMET | wc -l` = 1 ] || ( \
 		echo "Install required dependencies for CSS checks." && \
-		npm install "stylelint" "stylelint-config-standard" --save-dev \
+		npm install --save-dev \
 	)
 
 .PHONY: install-npm-remarklint
 install-npm-remarklint: install-npm    ## install remark-lint dependency for 'check-md' target using npm
-	@[ `npm ls 2>/dev/null | grep remark-lint | wc -l` = 1 ] || ( \
+	@[ `npm ls 2>/dev/null | grep remark-lint | grep -v UNMET | wc -l` = 1 ] || ( \
 		echo "Install required dependencies for Markdown checks." && \
 		npm install --save-dev \
-		 	remark-lint \
-		 	remark-gfm \
-		 	remark-cli \
-		 	remark-lint-maximum-line-length \
-		 	remark-lint-checkbox-content-indent \
-		 	remark-preset-lint-recommended \
-		 	remark-preset-lint-markdown-style-guide \
 	)
 
 ## -- Cleanup targets ----------------------------------------------------------------------------------------------- ##

package.json

@@ -1,14 +1,17 @@
 {
   "devDependencies": {
     "remark-cli": "^12.0.0",
+    "remark-frontmatter": "^5.0.0",
     "remark-gfm": "^4.0.0",
     "remark-lint": "^9.1.2",
     "remark-lint-checkbox-content-indent": "^4.1.2",
     "remark-lint-maximum-line-length": "^3.1.3",
     "remark-preset-lint-markdown-style-guide": "^5.1.3",
     "remark-preset-lint-recommended": "^6.1.3",
     "stylelint": "^15.11.0",
-    "stylelint-config-standard": "^34.0.0"
+    "stylelint-config-standard": "^34.0.0",
+    "stylelint-scss": "^5.3.2",
+    "stylelint-csstree-validator": "^3.0.0"
   },
   "remarkConfig": {
     "settings": {
@@ -22,6 +25,7 @@
     },
     "plugins": [
       "remark-gfm",
+      "remark-frontmatter",
       "remark-preset-lint-markdown-style-guide",
       "remark-preset-lint-recommended",
       "remark-lint-list-item-content-indent",
@@ -66,6 +70,7 @@
       "indentation": [
         4
       ],
+      "property-no-vendor-prefix": null,
       "no-descending-specificity": null
     }
   }