Reproduction of the loss of window.opener during cross-site navigation with nativeWindowOpen in Electron.

Relates to electron/electron#18032.

Loads a content of host1, opens a popup of host1 and navigates the popup to host2.

Usage

$ git clone https://github.com/alexstrat/electron-bug-repro-cross-origin-opener.git
$ cd electron-bug-repro-cross-origin-opener
$ npm i
$ sudo npm start

To reproduce:

• Click "Open popup"
• Click on http://host2.local:9001/index.html
• => window.opener is not defined