Jest: cannot find module required inside module to be tested (relative path)

In my case the issue was the import is also case sensitive. Check your import statement and ensure that it matches the filename exactly!

I also had to add the moduleNameMapper to my jest configuration for my tsconfig path maps in order to get my tests to recognize the path maps I had setup. Something like this:

"moduleNameMapper": {
      "^yourPath/(.*)": "<rootDir>\\yourPath\\$1"
    }

Hopefully this will help someone down the line!

You don't need to add moduleFileExtensions in the configuration for these two options since jest uses ['js', 'jsx', 'json', 'node'] as default file extensions. (Unless you want to specifically skip any option that is)

The problem were not the paths, It was looking for modules only with .js extension, it worked after adding the .jsx in the jest configuration:

"moduleFileExtensions": [
  "js",
  "jsx"
]