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This change introduces BroadcastChannel in order to communicate between frames. Messages are converted to according CustomEvents that can be handled individually. Event handling happens in the most specific scope on client side. A polyfill to support Edge has been installed, executed command: yarn add broadcastchannel-polyfill Resolves: #89244 Releases: master Change-Id: Iab55bf78ff9324d19d115022464c24eea1b8b78e Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61788 Reviewed-by: Benni Mack <benni@typo3.org> Reviewed-by: Frank Nägler <frank.naegler@typo3.org> Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de> Tested-by: TYPO3com <noreply@typo3.com> Tested-by: Frank Nägler <frank.naegler@typo3.org> Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
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