To solve this issue, let's dive into debugging.
Firstly, the error code is MODULE_NOT_FOUND, indicating that a require statement in your code could not be resolved by Node.
Secondly, the error occurs with a relative import, as seen in
Cannot find module './helpers/isPrime'
.
Thirdly, examining the require stack reveals that the problematic statement is in
AE_Technical_Challenge/routes/challengeRouter.js
, where
require('./helpers/isPrime') cannot be resolved.
It's important to note that relative imports are based on the current file's directory, not the entry-point of the project. Therefore, combining the current file's path (AE_Technical_Challenge/routes) with the relative require path (./helpers/isPrime) results in
AE_Technical_Challenge/routes/helpers/isPrime
, which does not exist and leads to the error.
If your project structure resembles:
.
├── routes/
│ └── challengeRouter.js
├── helpers/
│ └── isPrime.js
└── app.js
Then, in the router file, you should use require('../helpers/isPrime'). The .. moves from routes to the project root before accessing the helper file.
Simply correct the import statement to reference the isPrime file accurately. Additionally, modern editors like JetBrains IDEs or VSCode can help automatically manage imports for you.
If you prefer requiring modules as if you were in the project root, explore alternative solutions in this resource.