Test generic type and see if its wrapped in a ref?

[Ncage1974]

What would be the best way to test a generic type (typescript) to see if its wrapped in a ref?

[LinusBorg]

What do you want to do when "checking" this? can you give an example? In general, these things are usually done with an extends check in a conditional type, i.e.

type X =  T extends Ref ? SomeType : SomeOtherType
//with inference of the nested type:
type X =  T extends Ref<infer U> ? SomeType<U> : SomeOtherType<U>

// extract the nested type:
type NestedT = T extends Ref<infer U> ? U : T
// Vue has a helper for that:
type NestedT = UnwrapRef<T>

[Ncage1974]

thanks.....