IMPORTANT this is work in progress and may not be fully ready until Fluid 3.0 is released and can be used as minimum requirement.
Library of universal, general-purpose ViewHelpers compatible with the standalone Fluid template engine.
On command line:
composer require typo3/fluid-viewhelpers
And to register, via PHP API:
$view->getRenderingContext()->getViewHelperResolver()->addNamespace('f', 'TYPO3\\FluidViewHelpers\ViewHelpers');
Or in your template file(s):
{namespace f=TYPO3\\FluidViewHelpers\ViewHelpers}
Registering the namespace appends the ViewHelpers from this package to the f: namespace - you can also register
the namespace under a different alias. However, appending this library to the built-in ViewHelpers of Fluid has some
benefits, among other things it makes it possible to generate a single schema file containing all ViewHelpers.