Add error string formatter for stylelint

Improves stylelint output by re-printing
failures after all warnings. This makes
it a lot easier to find failures.

package.json

@@ -16,7 +16,7 @@
     "prettier-staged-save": "node ./scripts/frontend/prettier.js save",
     "prettier-all": "node ./scripts/frontend/prettier.js check-all",
     "prettier-all-save": "node ./scripts/frontend/prettier.js save-all",
-    "stylelint": "node node_modules/stylelint/bin/stylelint.js app/assets/stylesheets/**/*.*",
+    "stylelint": "node node_modules/stylelint/bin/stylelint.js app/assets/stylesheets/**/*.* --custom-formatter node_modules/stylelint-error-string-formatter",
     "webpack": "webpack --config config/webpack.config.js",
     "webpack-prod": "NODE_ENV=production webpack --config config/webpack.config.js"
   },
@@ -101,6 +101,7 @@
     "sql.js": "^0.4.0",
     "stickyfilljs": "^2.0.5",
     "style-loader": "^0.23.1",
+    "stylelint-error-string-formatter": "^1.0.1",
     "svg4everybody": "2.1.9",
     "three": "^0.84.0",
     "three-orbit-controls": "^82.1.0",

yarn.lock

@@ -875,8 +875,6 @@
   version "1.7.11"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/leb128/-/leb128-1.7.11.tgz#d7267a1ee9c4594fd3f7e37298818ec65687db63"
   integrity sha512-vuGmgZjjp3zjcerQg+JA+tGOncOnJLWVkt8Aze5eWQLwTQGNgVLcyOTqgSCxWTR4J42ijHbBxnuRaL1Rv7XMdw==
-  dependencies:
-    "@xtuc/long" "4.2.1"
 
 "@webassemblyjs/utf8@1.7.11":
   version "1.7.11"
@@ -912,11 +910,6 @@
   version "1.7.11"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-opt/-/wasm-opt-1.7.11.tgz#b331e8e7cef8f8e2f007d42c3a36a0580a7d6ca7"
   integrity sha512-XynkOwQyiRidh0GLua7SkeHvAPXQV/RxsUeERILmAInZegApOUAIJfRuPYe2F7RcjOC9tW3Cb9juPvAC/sCqvg==
-  dependencies:
-    "@webassemblyjs/ast" "1.7.11"
-    "@webassemblyjs/helper-buffer" "1.7.11"
-    "@webassemblyjs/wasm-gen" "1.7.11"
-    "@webassemblyjs/wasm-parser" "1.7.11"
 
 "@webassemblyjs/wasm-parser@1.7.11":
   version "1.7.11"
@@ -9669,9 +9662,6 @@ style-loader@^0.23.1:
   version "0.23.1"
   resolved "https://registry.yarnpkg.com/style-loader/-/style-loader-0.23.1.tgz#cb9154606f3e771ab6c4ab637026a1049174d925"
   integrity sha512-XK+uv9kWwhZMZ1y7mysB+zoihsEj4wneFWAS5qoiLwzW0WzSqMrrsIy+a3zkQJq0ipFtBpX5W3MqyRIBF/WFGg==
-  dependencies:
-    loader-utils "^1.1.0"
-    schema-utils "^1.0.0"
 
 style-search@^0.1.0:
   version "0.1.0"
@@ -9683,6 +9673,11 @@ stylelint-config-recommended@^2.1.0:
   resolved "https://registry.yarnpkg.com/stylelint-config-recommended/-/stylelint-config-recommended-2.1.0.tgz#f526d5c771c6811186d9eaedbed02195fee30858"
   integrity sha512-ajMbivOD7JxdsnlS5945KYhvt7L/HwN6YeYF2BH6kE4UCLJR0YvXMf+2j7nQpJyYLZx9uZzU5G1ZOSBiWAc6yA==
 
+stylelint-error-string-formatter@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/stylelint-error-string-formatter/-/stylelint-error-string-formatter-1.0.1.tgz#366387825d6fb59569e8c5c3f5682398733756f9"
+  integrity sha512-8zy0UsdnQZKVDwjWMQX36b30TaNMGcM2FzBcK9cshpXerpJ3AvF2/zw7FJ3Efm6DFviTBVsxR14F3FnDFhCxJw==
+
 stylelint-scss@^3.5.3:
   version "3.5.3"
   resolved "https://registry.yarnpkg.com/stylelint-scss/-/stylelint-scss-3.5.3.tgz#e158b3061eeec26d7f6088f346998a797432f3c8"