update

node_modules/csso/lib/replace/Dimension.js

@@ -1,4 +1,10 @@
 var packNumber = require('./Number').pack;
+var MATH_FUNCTIONS = {
+    'calc': true,
+    'min': true,
+    'max': true,
+    'clamp': true
+};
 var LENGTH_UNIT = {
     // absolute length units
     'px': true,
@@ -43,7 +49,7 @@ module.exports = function compressDimension(node, item) {
         }
 
         // issue #222: don't remove units inside calc
-        if (this.function && this.function.name === 'calc') {
+        if (this.function && MATH_FUNCTIONS.hasOwnProperty(this.function.name)) {
             return;
         }
 

node_modules/csso/lib/replace/Number.js

@@ -2,7 +2,7 @@ var OMIT_PLUSSIGN = /^(?:\+|(-))?0*(\d*)(?:\.0*|(\.\d*?)0*)?$/;
 var KEEP_PLUSSIGN = /^([\+\-])?0*(\d*)(?:\.0*|(\.\d*?)0*)?$/;
 var unsafeToRemovePlusSignAfter = {
     Dimension: true,
-    HexColor: true,
+    Hash: true,
     Identifier: true,
     Number: true,
     Raw: true,

node_modules/csso/lib/replace/color.js

@@ -442,7 +442,7 @@ function compressFunction(node, item, list) {
         }
 
         item.data = {
-            type: 'HexColor',
+            type: 'Hash',
             loc: node.loc,
             value: toHex(args[0]) + toHex(args[1]) + toHex(args[2])
         };
@@ -465,7 +465,7 @@ function compressIdent(node, item) {
         if (hex.length + 1 <= color.length) {
             // replace for shorter hex value
             item.data = {
-                type: 'HexColor',
+                type: 'Hash',
                 loc: node.loc,
                 value: hex
             };

node_modules/csso/lib/replace/index.js

@@ -8,7 +8,7 @@ var handlers = {
     Number: require('./Number'),
     String: require('./String'),
     Url: require('./Url'),
-    HexColor: require('./color').compressHex,
+    Hash: require('./color').compressHex,
     Identifier: require('./color').compressIdent,
     Function: require('./color').compressFunction
 };