React component should be chock full of do expressions If the motivation behind these features are React components, javascript clearly lacks proper logic in a

React component should be chock full of do expressions If the motivation behind these features are React components, javascript clearly lacks proper logic in array (and object) literals, like '[' if (cond) […]expr1 [else […]expr2] ']' Although it seems pretty strange to add syntax only because some specific user interface library together with a specific language extension could benefit from it.