npm and error messages

node_modules/core-js/modules/es6.string.anchor.js

@@ -0,0 +1,7 @@
+'use strict';
+// B.2.3.2 String.prototype.anchor(name)
+require('./_string-html')('anchor', function (createHTML) {
+  return function anchor(name) {
+    return createHTML(this, 'a', 'name', name);
+  };
+});