update node modules

node_modules/clean-css/lib/optimizer/level-1/value-optimizers/fraction.js

@@ -0,0 +1,43 @@
+var startsAsUrl = require('./starts-as-url');
+
+var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
+
+var DOT_ZERO_PATTERN = /(^|\D)\.0+(\D|$)/g;
+var FRACTION_PATTERN = /\.([1-9]*)0+(\D|$)/g;
+var LEADING_ZERO_FRACTION_PATTERN = /(^|\D)0\.(\d)/g;
+var MINUS_ZERO_FRACTION_PATTERN = /([^\w\d\-]|^)\-0([^\.]|$)/g;
+var ZERO_PREFIXED_UNIT_PATTERN = /(^|\s)0+([1-9])/g;
+
+var plugin = {
+  level1: {
+    value: function fraction(name, value, options) {
+      if (!options.level[OptimizationLevel.One].replaceZeroUnits) {
+        return value;
+      }
+
+      if (startsAsUrl(value)) {
+        return value;
+      }
+
+      if (value.indexOf('0') == -1) {
+        return value;
+      }
+
+      if (value.indexOf('-') > -1) {
+        value = value
+          .replace(MINUS_ZERO_FRACTION_PATTERN, '$10$2')
+          .replace(MINUS_ZERO_FRACTION_PATTERN, '$10$2');
+      }
+
+      return value
+        .replace(ZERO_PREFIXED_UNIT_PATTERN, '$1$2')
+        .replace(DOT_ZERO_PATTERN, '$10$2')
+        .replace(FRACTION_PATTERN, function (match, nonZeroPart, suffix) {
+          return (nonZeroPart.length > 0 ? '.' : '') + nonZeroPart + suffix;
+        })
+        .replace(LEADING_ZERO_FRACTION_PATTERN, '$1.$2');
+    }
+  }
+};
+
+module.exports = plugin;