Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Stencil Version

2.14.0

Current Behavior

this.el.getRootNode() instanceof ShadowRoot
I try to know if my custom component is in a shadowDOM.
It works well but not in specs test.
I have this error ReferenceError: ShadowRoot is not defined

Expected Behavior

No error in test when we use ShadowRoot

Steps to Reproduce

Try to test if the host element is in a shadowDOM context
this.el.getRootNode() instanceof ShadowRoot

Then run unit tests.

Code Reproduction URL

https://github.com/ryuran/stencil-bugs

Additional Information

• npm i
• npm test

Workaround

Mock:

global.DocumentFragment = class DocumentFragment extends Node {};
global.ShadowRoot = class ShadowRoot extends DocumentFragment {};