Loading your own or other RequireJS modules 

In case you use the ready event, you may wonder how to use the module. Answer: it depends! If you use Fluid's f:be.pageRenderer view helper add the argument includeRequireJsModules:

<f:be.pageRenderer includeRequireJsModules="{
   0:'TYPO3/CMS/FooBar/Wisdom'
}" />

However, if you don't use Fluid you may use PageRenderer in your controller:

$pageRenderer = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Page\PageRenderer::class);
$pageRenderer->loadRequireJsModule('TYPO3/CMS/FooBar/MyMagicModule');

Bonus: loadRequireJsModule takes a second argument $callBackFunction which is executed right after the module was loaded. The callback function must be wrapped within function() {}:

$pageRenderer->loadRequireJsModule(
   'TYPO3/CMS/FooBar/MyMagicModule',
   'function() { console.log("Loaded own module."); }'
);