Is there a way to determine if a type is nullable and if it has a conditional type on the value?
I attempted to do so with the following code:
type IsNullable<T> = T extends null ? true : false;
However, I encountered some issues:
type test = IsNullable<number> // Returns false as expected
type test = IsNullable<number | null> // Returns false instead of true
What is the correct method for checking if a type is nullable? I also experimented with T extends null | T without success.
To achieve the desired result, you have the option to swap the left and right sides of the extends statement like this:
type IsNullable<T> = T extends null ? true : false;
By making this adjustment, it should meet your requirements.
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