Breaking: #88564 - PageTSconfig setting "TSFE.constants" removed¶
The PageTSconfig / UserTSconfig
TSFE.constants, which allowed to override settings constants
on a per-tree level page was introduced in TYPO3 at the very beginning, long before TSconfig had conditions.
It was used to share TypoScript-based configuration between frontend / backend, and on a per-page/tree level.
However, this has been superseded for a long time by using proper configuration files which
can be loaded at any time, for example when
ext_localconf.php of an extension is loaded.
Therefore, the option has been removed.
TSFE.constants in PageTSconfig or UserTSconfig has no effect, as it is not evaluated
Any TYPO3 installation using
TSFE.constants in their PageTSconfig.
It is recommended to include TypoScript conditions in setup/constants, also since constants+setup
are evaluated in Backend context for Extbase modules. This option is not needed anymore and
can be substituted by simple constants in
sys_template or any Extension inclusion files as well.