Izmjenjena struktura, dodan backand

web/node_modules/is-resolvable/index.js

@@ -0,0 +1,26 @@
+'use strict';
+
+var tryit = require('tryit');
+
+module.exports = function isResolvable(moduleId) {
+  if (typeof moduleId !== 'string') {
+    throw new TypeError(
+      moduleId +
+      ' is not a string. A module identifier to be checked if resolvable is required.'
+    );
+  }
+
+  var result;
+  tryit(function() {
+    require.resolve(moduleId);
+  }, function(err) {
+    if (err) {
+      result = false;
+      return;
+    }
+
+    result = true;
+  });
+
+  return result;
+};