1 files changed, 7 insertions, 0 deletions
diff --git a/vanilla/node_modules/css-tree/lib/syntax/function/expression.js b/vanilla/node_modules/css-tree/lib/syntax/function/expression.js
new file mode 100644
index 0000000..040f826
--- /dev/null
+++ b/vanilla/node_modules/css-tree/lib/syntax/function/expression.js
@@ -0,0 +1,7 @@
+// legacy IE function
+// expression( <any-value> )
+export default function() {
+    return this.createSingleNodeList(
+        this.Raw(null, false)
+    );
+}