Module 'jest-junit' in the testResultsProcessor option was not found

Question

I have setup jest and jest-junit as the reporter and followed the simple instructions given by jest-junit.

This includes npm install jest --save-dev and npm install jest-junit --save-dev

My package.json looks like this (excerpt):

  "devDependencies": { 
    "jest": "^22.4.4",
    "jest-junit": "^4.0.0",
  },
  "scripts": {
    "test": "jest --ci --testResultsProcessor='jest-junit'"
  },
  "jest": {
    "verbose": true,
    "testResultsProcessor": "jest-junit"
  },
  "jest-junit": {
    "suiteName": "Test Suite",
    "output": "./junit.xml"
  }

When running npm run test on my machine (OSX), it works well. When running it as part of the CI build process or on another Windows machine, I am getting the following error:

Module 'jest-junit' in the testResultsProcessor option was not found.

Tuula · Accepted Answer · 2018-05-29 17:49:50Z

16

Maybe you just need to install the missing module to the other machine:

npm install jest-junit

answered May 29, 2018 at 17:49

Tuula

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2 Comments

Kevin Farrugia Over a year ago

Edited original question. Included jest-junit as a devDependency and run npm install (without error) prior to running npm run test

Fernando Nogueira Over a year ago

In my case it's worked fine with yarn add jest-junit ...

jpierson · Accepted Answer · 2025-02-19 13:06:50Z

8

Found the solution and it was the removal of inverted commas / apostrophes (') around jest-junit.

"test": "jest --ci --testResultsProcessor='jest-junit'"

should become

"test": "jest --ci --testResultsProcessor=jest-junit"

edited Feb 19 at 13:06

jpierson

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answered May 30, 2018 at 7:40

Kevin Farrugia

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