1 files changed, 15 insertions, 0 deletions
diff --git a/node_modules/stylehacks/src/isMixin.js b/node_modules/stylehacks/src/isMixin.js
new file mode 100644
index 00000000..5a08c409
--- /dev/null
+++ b/node_modules/stylehacks/src/isMixin.js
@@ -0,0 +1,15 @@
+'use strict';
+/**
+ * @param {import('postcss').Rule} node
+ * @return {boolean}
+ */
+module.exports = function isMixin(node) {
+  const { selector } = node;
+
+  // If the selector ends with a ':' it is likely a part of a custom mixin.
+  if (!selector || selector[selector.length - 1] === ':') {
+    return true;
+  }
+
+  return false;
+};