How can I configure the jsdom instance used by jest?

Question

I\'ve come up against this issue Invalid URL is thrown when requiring systemjs in jest test cases

One of the last comments suggests

\"manipulate the jsdom instan

Answer 1

I just went down this road and found out that as of Jest 21.2.1, the official way is to fork your own JSDom environment.

This is a bit painful to set up but allows in-depth customization.

References:

• https://github.com/facebook/jest/issues/2484#issuecomment-270174381
• https://github.com/facebook/jest/issues/2460#issuecomment-324630534

Sample environment: https://github.com/mes/jest-environment-jsdom-external-scripts