npm and error messages

node_modules/html-minifier/src/utils.js

@@ -0,0 +1,18 @@
+'use strict';
+
+function createMap(values, ignoreCase) {
+  var map = {};
+  values.forEach(function(value) {
+    map[value] = 1;
+  });
+  return ignoreCase ? function(value) {
+    return map[value.toLowerCase()] === 1;
+  } : function(value) {
+    return map[value] === 1;
+  };
+}
+
+exports.createMap = createMap;
+exports.createMapFromString = function(values, ignoreCase) {
+  return createMap(values.split(/,/), ignoreCase);
+};