Configuring jest, wallabyjs in a rush monorepo

Question

I'm attempting to set up a monorepo using rush for monorepo management, jest as my test framework, and wallabyjs as my test runner. When I attempt to start wallaby, I get the error [Error] Automatic Jest configuration error: Module jest-cli is not found in '.'. in my wallaby console.

My understanding of rush and its monorepo approach is that the root does not have a package.json - just the actual libs/apps have a package.json file. If this is the case, how do I add jest-cli at the root level? I have jest-cli installed globally.

What do I need to do to get this running?

Answer 1

The problem was that the wallaby automatic configuration apparently wouldn't work in a monorepo. I had to explicitly add a wallaby.js config file. Details on the file are here: https://wallabyjs.com/docs/config/overview.html