Debugging jest test in VS Code shows "Error: Cannot find module "jest-environment-node"

Question

I have troubles with debugging my jest tests. Maybe I introduce my setup first:

root-dir
  test
    sample.spec.ts
  jest.config.js
  package.json
  tsconfig.json

The contents of sample.spec.ts:

describe('Sample', () => {
  it.concurrent('App', async () => {
    expect(true).toEqual(true); // here the breakpoint is set
});

});

So nothing fancy to be debugged here. I installed the Jest Runner extension in VS Code.

However, when I "click" the "Debug" button, right above the it, the debugger starts, but shows an exception:

Exception has occurred: Error: Cannot find module 'jest-environment-<path-to-my-root-dir>\node_modules\jest-environment-node\build\index.js/package.json' from '<path-to-my-root-dir>'e

What is the problem there? In the node_modules directory, the jest-environment-node is there. The path form the exception is not correct, hence it can't find the package.json. But this one I can't influence!

I appreciate your help!

Kind regards to all of you!

score 2 · Answer 1 · answered Nov 16 '22 at 09:35

I've found the solution to this problem... which isn't a problem at all. It is also answered here: Cannot find module jest-sequencer-@jest/test-sequencer!

So... never ever tick Caught Exceptions and Uncaught Exceptions in VS Code:

Without those two ticks, jest works out of the box.

Debugging jest test in VS Code shows "Error: Cannot find module "jest-environment-node"

1 Answers1