Use my values fork until PR can be merged.

Author: tec27

package.json

@@ -13,7 +13,7 @@
     "postcss-modules-extract-imports": "^1.0.0",
     "postcss-modules-local-by-default": "^1.0.1",
     "postcss-modules-scope": "^1.0.0",
-    "postcss-modules-values": "^1.1.0",
+    "postcss-modules-values": "tec27/postcss-modules-values#comma_defs",
     "source-list-map": "^0.1.4"
   },
   "devDependencies": {