This is what React actually lets you do... It just also acknowledges that UI components must be sufficiently typed and coded that they can accept lambdas as pro

This is what React actually lets you do... It just also acknowledges that UI components must be sufficiently typed and coded that they can accept lambdas as properties in order to provide the expressivity needed. Template languages must be real languages because templates are macros at heart. I expect Web Components will learn that lesson slowly and painfully instead, as they cling to the broken ideas that got us here.