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How to make one type depends on argument

Is it possible to make return type of function dependent on the argument type? In this example by default we can use T | undefined, but I need that return type of function always be T if initial data is defined and (T | undefined) if it is undefined Answer Is it possible to make return type of function depend…

Res.send not a function

I have an endpoint (using express) which requires me to do some fetching first. Once a parse the response and use res.send I get an error res.send is not a function. I tried searching for this error but all searches show users had res,req in the wrong order. In this case, mine appear to be right. Why is it re…

How to handle collisions in Phaser

I want to make objects push away from each other in my Phaser game (arcade physics). To do so I’ve tried to use the collider function: But I always get TypeError: undefined is not an object (evaluating ‘t.isParent’) It looks like this is error rises during the update process as it’s ri…