Added Stylelint Setup

Added stylelint to static-analysis
Updated yarn dependencies
CSS Fixes and rule adoptions of stylelint
Added stylelint-scss
Deduplicated yarn.lock to clear dependencies

1 files changed, 30 insertions, 0 deletions

diff --git a/.stylelintrc b/.stylelintrc
new file mode 100644
index 00000000000..69de9a5dd13
--- /dev/null
+++ b/.stylelintrc
@@ -0,0 +1,30 @@
+{
+  "extends": "stylelint-config-recommended",
+  "plugins": [
+    "stylelint-scss"
+  ],
+  "rules": {
+    "no-descending-specificity": null,
+    "font-family-no-missing-generic-family-keyword": null,
+    "at-rule-no-unknown": [ true, {
+      ignoreAtRules: ["include", "each", "mixin", "extend", "if", "function", "for", "else", "return"]
+    }],
+    "selector-type-no-unknown": [true, {
+      "ignoreTypes": ["gl-emoji"]
+    }],
+    "unit-no-unknown" : [true, {
+      "ignoreFunctions": ["-webkit-image-set"]
+    }],
+    "scss/at-extend-no-missing-placeholder": null,
+    "scss/at-function-pattern": "^[a-z]+([a-z0-9-]+[a-z0-9]+)?$",
+    "scss/at-import-no-partial-leading-underscore": true,
+    "scss/at-import-partial-extension-blacklist": ["scss"],
+    "scss/at-mixin-pattern": "^[a-z]+([a-z0-9-]+[a-z0-9]+)?$",
+    "scss/at-rule-no-unknown": true,
+    "scss/dollar-variable-colon-space-after": "always",
+    "scss/dollar-variable-colon-space-before": "never",
+    "scss/dollar-variable-pattern": "^[_]?[a-z]+([a-z0-9-]+[a-z0-9]+)?$",
+    "scss/percent-placeholder-pattern": "^[a-z]+([a-z0-9-]+[a-z0-9]+)?$",
+    "scss/selector-no-redundant-nesting-selector": true,
+  }
+}