Error in vitest config with NextJS13: failed to resolve import

I'm integrating vitest with a NextJS13 app, but running into problems with a simple test run.

Not sure what the problem is, I tried to do some tweaking with the vitest.config.ts but no luck. I tried adding the dir option, modified the include option to grab files from the source file but no luck.

I thought maybe it had to do with the tsconfig.json file, but it's still outputting the error.

This is the directory of the file

Here are the files in question:

vitest.config.ts

/// <reference types="vitest" />

import { defineConfig } from 'vitest/config'
import react from '@vitejs/plugin-react'

// https://vitejs.dev/config/
export default defineConfig({
  plugins: [react()],
  test: {
    globals: true,
    environment: 'jsdom',
    include: ['src/**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}'],
    setupFiles: 'setupTests.ts',
    // dir: './src'
    // includeSource: ['src/**/*.{js,ts,tsx}'],
  },
});

tsconfig.json

{
"compilerOptions": {
    "target": "ES2017",
    "lib": ["es6", "dom", "dom.iterable", "esnext"],
    "allowJs": true,
    "skipLibCheck": true,
    "strict": false,
    "forceConsistentCasingInFileNames": true,
    "noEmit": true,
    "esModuleInterop": true,
    "module": "ESNEXT",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "jsx": "preserve",
    "baseUrl": ".",
    "incremental": true,
    // "paths": {
    //     "src": ["./src/*"]
    // }
},
"exclude": ["node_modules"],
"include": ["vitest.config.ts","**/*.ts", "**/*.tsx", "next-env.d.ts", 
"next.config.js"]
}

DataTable.test.tsx - src/common/components/DataTable/DataTable.test.tsx

// components

import DataTable from 'src/common/components/DataTable';

// dependencies
import {describe, it} from 'vitest'
import {screen, render} from '@testing-library/react'

describe('DataTable test', () => {

    it('render the app', () => {
        // arrange
            render(<DataTable />)
        // act
            const assetText = screen.getByText("asset")
        // assert
            // expect(assetText).toBeInTheDocument()
    })
})

DataTable component - src/common/components/DataTable/DataTable.tsx

export const DataTable = () => {

    return (
        <div>
            <h1>assets</h1>
        </div>
    );
};

Index.tsx - src/common/components/DataTable/index.tsx

import { DataTable } from 'src/common/components/DataTable/DataTable';

export default DataTable;

I'm new to vitest and nextjs, your help/guidance will be appreciated.

There are two things needed here to make the import DataTable from 'src/common/components/DataTable'; import work:

1. TypeScript needs the paths compilerOption set.
2. Vite needs to have the same alias set.

The "paths" compilerOption in TypeScript will need a /* on the end of the "src" key to be able to resolve paths underneath the "src" directory (see tsconfig.json reference):

{
  "compilerOptions": {
    "paths": {
      "src/*": ["./src/*"]
    }
  }
}

Vite/Vitest will also need to know how to resolve "src/common/components/DataTable", and that would usually be done with the resolve.alias setting, but rather than duplicating the alias here, you could also use a plugin, like vite-tsconfig-paths, to add the path aliases if finds in relevant tsconfig.json files:

import react from "@vitejs/plugin-react";
import tsconfigPaths from "vite-tsconfig-paths";

export default {
  plugins: [tsconfigPaths(), react()],
};