If you don't explicitly specify, Karma will be unable to load TypeScript files

When working in a JavaScript file (controller.js), I have an import of a ts file (service).

import {service} from "../../../service";

During project execution (both development and production), everything functions correctly. However, when running karma, the following error occurs:

ERROR in ..../controller.js Module not found: Error: Can't resolve '../../../service' in 'C:\Workspaces....'

If I include the extension, it works without issues, but this requires changes in multiple locations.

Is there a way to configure karma to function as it does in production and development?

The technology stack being utilized includes webpack, karma, and mocha.

typescriptwebpackimportkarma-runner

Answer №1

It could be a potential problem related to the preprocessors or files configuration in the karma setup file. Ensure that you include both JavaScript and TypeScript files in the typescript preprocessor.

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