vitest/docs/guide/common-errors.md

title
Common Errors | Guide

Common Errors

Cannot find module './relative-path'

If you receive an error that module cannot be found, it might mean several different things:

• 1. You misspelled the path. Make sure the path is correct.
• 2. It's possible that your rely on baseUrl in your tsconfig.json. Vite doesn't take into account tsconfig.json by default, so you might need to install vite-tsconfig-paths yourself, if you rely on this behaviour.

import { defineConfig } from 'vitest/config'
import tsconfigPaths from 'vite-tsconfig-paths'

export default defineConfig({
  plugins: [tsconfigPaths()]
})

Or rewrite your path to not be relative to root:

- import helpers from 'src/helpers'
+ import helpers from '../src/helpers'

• 3. Make sure you don't have relative aliases. Vite treats them as relative to the file where the import is instead of the root.

import { defineConfig } from 'vitest/config'

export default defineConfig({
  test: {
    alias: {
      '@/': './src/', // [!code --]
      '@/': new URL('./src/', import.meta.url).pathname, // [!code ++]
    }
  }
})