Fix "cannot resolve symbol 'routes'" in IntelliJ IDE's

While using WebStorm to code, I ran into an issue with my import statement:

import { BrowserRouter as Router, Routes, Route } from "react-router-dom";

What is happening is the Jetbrains IDE is reading the type file for the package from /jetbrains/intellij/javascript/typings instead of the project's  node_modules folder.

This happens because the IDE downloads typings for libraries to its configuration folder to enhance code completion.

Luckily, I found threads discussing this issue on stackoverflow, and what was shared worked to resolve the issue.

Here's what to do:

1. In the IDE, double tap shift two times to open the search everywhere window, search for registry and open the Registry... result.

2. In the registry, remove react-router-dom from the value field of the typescript.external.type.defintions.packages key.

3. Finally, click File => Invalidate Caches, then check Clear file system cache and Local History, then click Invalidate and Restart.

This change will ensure the IDE will read the type file from the node_modules folder instead of the internal typings folder. FYI, this registry is "IDE level", not "project level".