Can Vitest be configured to use a separate tsconfig file?

Can I specify a different tsconfig file for vitest?

In my extensive project that is currently using vue-cli, I am considering switching to vite. However, before making the full conversion, I would like to start by using vitest instead of jest. The issue arises from the fact that the current tsconfig.json file specifies 'target: es2015', whereas for vitest it should be 'target: esnext'.

Answer №1

Achieving this is feasible by utilizing the typecheck.tsconfig setting in your vitest setup. For more information, refer to this specific section of the documentation.

Answer №2

In an ideal scenario, we would be able to specify a custom path to a different tsconfig file in the vitest configuration. Unfortunately, I have not come across such an option.

One potential workaround that may be effective in certain cases involves using an alternate approach:

  • Rather than relying on a primary tsconfig.json for project building and a separate tsconfig.test.json for testing purposes,
  • We can utilize the main tsconfig.json for editor support throughout the entire project (including tests), as well as defining test-specific configurations within it (which vitest will recognize).
  • Subsequently, create a distinct tsconfig.build.json solely dedicated to specifying build-related settings (tsc -p ./tsconfig.build.json)

This method enables us to control the generated build output based on parameters like rootDir, include, etc.

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