Jest: testEnvironmentOptions cannot be read

Question

I'm getting the following error with Jest, but unclear why even after adding the testEnvironmentOptions

       TypeError: Cannot read properties of undefined (reading 'testEnvironmentOptions')
    
          at new JSDOMEnvironment (node_modules/jest-environment-jsdom/build/index.js:72:28)
          at async TestScheduler.scheduleTests (node_modules/@jest/core/build/TestScheduler.js:333:13)
          at async runJest (node_modules/@jest/core/build/runJest.js:404:19)

Here is my Jest config in my package.json:

    "jest": {
        "moduleNameMapper": {
          "^@/(.*)$": "<rootDir>/$1",
          "^~/(.*)$": "<rootDir>/$1",
          "^vue$": "vue/dist/vue.common.js"
        },
        "testEnvironment": "jsdom",
        "testEnvironmentOptions": {
          "browsers": [
            "chrome",
            "firefox",
            "safari"
          ]
        },
        "moduleFileExtensions": [
          "vue",
          "js",
          "json"
        ],
        "transformIgnorePatterns": [
          "/node_modules/(?!crypto-random-string)"
        ],
        "transform": {
          "^.+\\.js$": "<rootDir>/node_modules/babel-jest",
          ".*\\.(vue)$": "<rootDir>/node_modules/vue-jest"
        },
        "collectCoverage": true,
        "collectCoverageFrom": [
          "<rootDir>/src/**/*.vue",
          "<rootDir>/src/**/*.js"
        ]
      }

Related: stackoverflow.com/questions/72487379/…

Vadzim
– Vadzim

2025-01-17 14:52:18 +00:00
Commented Jan 17, 2025 at 14:52 — Vadzim
– Vadzim, Commented Jan 17, 2025 at 14:52

Daniel · Accepted Answer · 2024-02-06 11:13:22Z

99

Make sure you have both packages jest and jest-environment-jsdom installed in the same version. The latter is required to be installed separately from jest version 28 on. I ran into the same issue when downgrading jest to 27.x but not jest-environment-jsdom. Have a look at the version 27 to 28 upgrade guide about using JSDOM test environment.

edited Feb 6, 2024 at 11:13

answered May 5, 2022 at 9:00

Daniel

1,2589 silver badges15 bronze badges

Sign up to request clarification or add additional context in comments.

7 Comments

schonarth Over a year ago

Boy I spent a couple of days already toiling away at this! THANK YOU for the tip of installing them separately! I owe you a beer, sir!

user9114012 Over a year ago

Is this how it is supposed to be? "devDependencies": { "jest": "^28.1.2", "jest-environment-jsdom": "^28.1.2" }

Daniel Over a year ago

@AmirŠaran Yes, for example. Is it working?

Yulian Over a year ago

If you have jest installed globally as I do, make sure to update it too. Otherwise, running jest from your terminal will result in the same error.

Joe Maffei Over a year ago

jestjs.io/docs/upgrading-to-jest29#jsdom-upgrade

|

raisedbywolves · Accepted Answer · 2022-12-05 14:20:34Z

9

I had different versions of local jest and global jest, jest-environment-jsdom was not installed globally. This caused me the issues. Running it locally via

./node_modules/jest/bin/jest.js src/my-test.spec.ts

or updating global jest packages did the job for me. I see that this is mentioned in one of the comments above, but somehow I missed it and spent too much time on it so posting it here

answered Dec 5, 2022 at 14:20

raisedbywolves

2014 silver badges6 bronze badges

3 Comments

Sly_cardinal Over a year ago

Using pnpm workspaces, in my project I needed to add a local dependency on jest-cli that matched the local jest version.

Spock Over a year ago

Thank you @Sly_cardinal, that was precisely my issue also. Arggggh

Pierre Over a year ago

Indeed, I had the same situation, but using npx jest src/my-test.spec.ts is simpler to use the project's jest :)

ATilara · Accepted Answer · 2022-11-24 05:22:00Z

5

For me running

npx browserslist@latest --update-db

did the job

answered Nov 24, 2022 at 5:22

ATilara

53110 silver badges14 bronze badges

2 Comments

Skyy2010 Over a year ago

surprisingly for me too.

Eric B Over a year ago

Same for me even though I had a message suggesting I do it which I ignored

Shubham Kundu · Accepted Answer · 2023-04-28 11:19:17Z

2

I used yarn jest instead of jest to run the tests and it worked.

answered Apr 28, 2023 at 11:19

Shubham Kundu

1921 silver badge10 bronze badges

Comments

relbns · Accepted Answer · 2023-05-17 10:39:09Z

2

For those who still need a solution, try to check if you have a global version of the problematic library (in this case "jest-environment-node").

if you have it installed globally and the versions are different (from the running project version) you'll get errors.

I had the same issue with "jest" and with "babel-jest" when I tried to run yarn start (got a long error that started with "There might be a problem with the project dependency tree")

deleting these folders from the global path solved the problem.

the global path in Mac is usually /Users/{user}/node_modules/

good luck.

answered May 17, 2023 at 10:39

relbns

3241 gold badge3 silver badges6 bronze badges

Comments

Mitchell Yuen · Accepted Answer · 2023-10-05 13:13:38Z

0

I removed testEnvironment: 'node' and it works perfectly

answered Oct 5, 2023 at 13:13

Mitchell Yuen

3343 silver badges24 bronze badges

Comments

Nils Reichardt · Accepted Answer · 2025-10-31 18:38:52Z

0

In my case, I had a different version of Jest globally than in my package.json. Therefore, the output of jest --version and npx jest --version were different. Using the same versions fixed the issue.

answered Oct 31, 2025 at 18:38

Nils Reichardt

3,7952 gold badges23 silver badges34 bronze badges

Comments

Anurag Singh · Accepted Answer · 2024-08-20 19:43:42Z

-1

If it's still not working, then please upgrade jest from 27.x to 29.x. And either remove other manual installed lib like jest-environment-node, jest-environment-jsdom (as they will come as part of jest-puppeteer) or bring these to v29.x as well.

answered Aug 20, 2024 at 19:43

Anurag Singh

312 silver badges10 bronze badges

Collectives™ on Stack Overflow

Jest: testEnvironmentOptions cannot be read

8 Answers 8

7 Comments

3 Comments

2 Comments

Comments

Comments

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

8 Answers 8

7 Comments

3 Comments

2 Comments

Comments

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related