update

node_modules/postcss-values-parser/lib/string.js

@@ -0,0 +1,28 @@
+'use strict';
+
+const Container = require('./container');
+const Node = require('./node');
+
+class StringNode extends Node {
+  constructor (opts) {
+    super(opts);
+    this.type = 'string';
+  }
+
+  toString () {
+    let quote = this.quoted ? this.raws.quote : '';
+    return [
+      this.raws.before,
+      quote,
+      // we can't use String() here because it'll try using itself
+      // as the constructor
+      this.value + '',
+      quote,
+      this.raws.after
+    ].join('');
+  }
+}
+
+Container.registerWalker(StringNode);
+
+module.exports = StringNode;