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

The suggestion in the top-rated answer of adding testURL: "http://localhost" to my Jest config didn't work for me. However, this suggestion from the jsdom GitHub discussion, of passing a URL in when creating the jsdom object, did.

const url = 'http://localhost';

const dom = new JSDOM('', { url });