Fixing SecurityError during jest run

[pnevares]

Sometime yesterday a new version of jsdom began throwing an error below when running tests with jest, more info here: jestjs/jest#6766

This workaround seems more appropriate for the project than the testURL option mentioned at that link.

 FAIL  src/valid-json.test.js
  ● Test suite failed to run

    SecurityError: localStorage is not available for opaque origins

      at Window.get localStorage [as localStorage] (node_modules/jsdom/lib/jsdom/browser/Window.js:257:15)
          at Array.forEach (<anonymous>)

If it's fixed quickly by jsdom or jest teams, disregard ⏳

[mayank23]

Thanks @pnevares !! This sounds like the best option and since this plugin should be run in the node environment anyways 😃

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