I’m just learning testing in Mocha. By using esm import/export style I’m trying to test using Mocha the class that is in the path App/file-name.js and file where test code written is in the path test/folder-name/file-name.spec.js.

When I run the command from terminal

npm test

Exception during run: Error [ERR_MODULE_NOT_FOUND]: Cannot find module ‘C:UsersUserDesktopDEVTESTAutomated Testing in JSIntroduction to Unit Testingappnumbers_validator’ imported from C:UsersUserDesktopDEVTESTAutomated Testing in JSIntroduction to Unit Testingtestnumbers-validatorisNumberEven.spec.js

I get the following from the terminal

In the root folder I have this for mocha .mocharc.json with the content:

{
  "spec": "test/**/*.spec.js",
  "reporter": "mochawesome"
}

Eslint config file eslint.config.mjs

import config from "eslint-config-google";

export default [...[].concat(config)];

So like I don’t understand why is that happening I am using import and exports as

export class NumbersValidator {

import { expect } from "chai";

import { describe, beforeEach, afterEach, it } from "mocha";


import NumbersValidator from "../../app/numbers_validator";```








I tried all the ways get test working with require of commonjs and esm's import/export