Jest SecurityError: localStorage is not available for opaque origins

Question

When I want to run my project with the command npm run test, I get the error below. What is causing this?

FAIL
● Test suite failed to run

SecurityE         


        

Answer 1

I just had this cropping up in a large monorepo (in unit tests, that otherwise wouldn't have required jsdom). Explicitly setting the following in our jest.config.js (or the package.json equivalent) also alleviated that issue:

module.exports = {
  testEnvironment: 'node'
}

Update: As Nicolas mentioned below (thanks!), you can also add the following flags if you're not using any config files:

jest --testEnvironment node    
# or 
jest --env=node