typescript the value property is of the type defined

I am currently struggling with defining the extension of type I have. This is what I currently have:

type FooMap = {[key: string]: Foo<any>};

However, I actually need something like this:

type FooMap = {[key: string]: E extends Foo<any>};

Answer №1

To specify a type that extends a certain type without being precisely that type, you should utilize a generic type argument.

type ExampleMap<T extends ExampleClass<any>> = {[key: string]: T };

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