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Former-commit-id: ec29aa7447e3ad1c90dea24e94072d51f212333e [formerly d370cb523dde06fb6d5aab614bf6ec1d94097363] [formerly bbabc4da0a6128b3bd8ecfa226156c9c2be7297e [formerly 2789ff2161]]
Former-commit-id: fb3ae368534aa2bd7cc08283463ac9d8e0d1d825 [formerly efbb60cc4dd2856bbc004fcbdc0567540c72f5b3]
Former-commit-id: d0c3699029c88a3ed2a8f5ab72c70d0f5289292d

_assets/src/utils/css.js

@@ -0,0 +1,28 @@
+export default function getRule (rules) {
+  for (let i = 0; i < rules.length; i++) {
+    rules[i] = rules[i].toLowerCase()
+  }
+
+  let result = null
+  let find = Array.prototype.find
+
+  find.call(document.styleSheets, styleSheet => {
+    result = find.call(styleSheet.cssRules, cssRule => {
+      let found = false
+
+      if (cssRule instanceof window.CSSStyleRule) {
+        for (let i = 0; i < rules.length; i++) {
+          if (cssRule.selectorText.toLowerCase() === rules[i]) {
+            found = true
+          }
+        }
+      }
+
+      return found
+    })
+
+    return result != null
+  })
+
+  return result
+}